<![CDATA[Orchid Board - Most Complete Orchid Forum on the web ! - Pests & Diseases]]> http://www.orchidboard.com/community Diagnosis, treatments and possible prevention. en Thu, 17 May 2012 09:42:10 GMT vBulletin 60 http://www.orchidboard.com/community/images/misc/rss.jpg <![CDATA[Orchid Board - Most Complete Orchid Forum on the web ! - Pests & Diseases]]> http://www.orchidboard.com/community Twisting leaves and overall health http://www.orchidboard.com/community/pests-diseases/59748-twisting-leaves-overall-health.html Wed, 16 May 2012 20:40:31 GMT Does anyone know why the leaves are curling that way on the fist pic? Its a Phal with no id, also general health comments are always appreciated. Does anyone know why the leaves are curling that way on the fist pic? Its a Phal with no id, also general health comments are always appreciated.
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]]> TheSource674 http://www.orchidboard.com/community/pests-diseases/59748-twisting-leaves-overall-health.html Green Dot and yellow leaves on Dendrobium http://www.orchidboard.com/community/pests-diseases/59745-green-dot-yellow-leaves-dendrobium.html Wed, 16 May 2012 16:01:50 GMT Hi All, My Dendrobium is having an issue -- started a few weeks back, but at that time, I could not tell if the leaves were just spent as they... Hi All,

My Dendrobium is having an issue -- started a few weeks back, but at that time, I could not tell if the leaves were just spent as they were all on older canes.

However, it seems things are not right because newer leaves are turning yellow, after a green dot appears on the leaf (strange). The one green dot remains green while the rest of the leave turns yellow and I usually wind up removing it. I am always careful to have good ari ciculation and use sterile blades when cutting, but I am thinking this is some sort of infection or fungus...anyway have any ideas? (see picture)
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]]> JDawggie http://www.orchidboard.com/community/pests-diseases/59745-green-dot-yellow-leaves-dendrobium.html Phalaenopsis spikes and buds dying http://www.orchidboard.com/community/pests-diseases/59708-phalaenopsis-spikes-buds-dying.html Mon, 14 May 2012 21:15:42 GMT I have a Phalaenopsis that started a couple of spikes several months ago. They were growing very slowly and then the buds began dying. Now the ends... I have a Phalaenopsis that started a couple of spikes several months ago. They were growing very slowly and then the buds began dying. Now the ends of the spikes are also dying. See photo. (The burnt leaf in the photo is from last summer. :() It was in a NW window, back from the glass so as not to get direct sunlight. Now it's in a grow box with fluorescent lighting. Anyone have any idea what might be the problem? ]]> Milt http://www.orchidboard.com/community/pests-diseases/59708-phalaenopsis-spikes-buds-dying.html Phalaenopsis with small leaves http://www.orchidboard.com/community/pests-diseases/59702-phalaenopsis-small-leaves.html Mon, 14 May 2012 15:01:51 GMT I have a Phalaenopsis 'Mount Lip' which is growing strangely. In the last year or so it has put out 9 new leaves, but each of them are less than half the length of the original leaves. It hasn't flowered since this started, so I don't know if the flower will be affected. The leaves otherwise look great, and there's lots of good roots. I repotted it about the same time in clay brick chunks, but I doubt that that is the cause, since I also have other phals potted the same way and they grow normally. Culturally (light, water, temp, etc) it's grown the same as the other phals too. Any ideas what causes this?
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]]> daveh_sf http://www.orchidboard.com/community/pests-diseases/59702-phalaenopsis-small-leaves.html Natural pigmentation or possible virus? http://www.orchidboard.com/community/pests-diseases/59676-natural-pigmentation-possible-virus.html Sat, 12 May 2012 16:35:24 GMT My Phal. equestris 'Orange' has gotten these strange reddish colourations on its leaves. They've become more pronounced and at first I thought it was a natural pigmentation that appeared after it got some more light, but now I've started to worry a bit. The other thing that has made me worry is that it seems to be a bit of a slow grower, but it has finally started putting out a new leaf (a month after its 'Blue Lip' colleague which I got from the same seller).

What do you guys think?
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]]> The Mutant http://www.orchidboard.com/community/pests-diseases/59676-natural-pigmentation-possible-virus.html Is this a bacteria or fungus? http://www.orchidboard.com/community/pests-diseases/59674-bacteria-fungus.html Sat, 12 May 2012 15:34:32 GMT This has appeared on a few of my Dendrobium canes. Attachment 68003 (http://www.orchidboard.com/community/attachments/pests-diseases/68003-bacteria-fungus-imageuploadedbytapatalk1336836860.965926.jpg) This has appeared on a few of my Dendrobium canes.
Attachment 68003
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]]> Paul Mc http://www.orchidboard.com/community/pests-diseases/59674-bacteria-fungus.html Millipedes/Centipedes http://www.orchidboard.com/community/pests-diseases/59651-millipedes-centipedes.html Fri, 11 May 2012 14:30:55 GMT I am not sure which these are or if they are something like them. I have a mounted octopus orchid. It is on a really nice mount and has rooted to it... I am not sure which these are or if they are something like them. I have a mounted octopus orchid. It is on a really nice mount and has rooted to it quite well. I have yet to flower it, but it has several new growths and looks like it is developing sheaths. I was giving it a good soak overnight last night. I picked it up to return it to its place and saw 6 or 7 of these little s*&ts on it. I took it outside and flicked them off. NOW WHAT DO I DO??? Do I need to take it off of the mount? Is there something I can drench it with that will penetrate into the mount? It is on a really nice cork mount with lots of crags. Help me do right by this, please! ]]> Daethen http://www.orchidboard.com/community/pests-diseases/59651-millipedes-centipedes.html fungus? http://www.orchidboard.com/community/pests-diseases/59641-fungus.html Fri, 11 May 2012 01:37:59 GMT i was checking my phrag. manzurii, and found this spot in one of the leaves. is it fungus? how do i get rid of itAttachment 67939... i was checking my phrag. manzurii, and found this spot in one of the leaves. is it fungus? how do i get rid of itAttachment 67939
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]]> santiago http://www.orchidboard.com/community/pests-diseases/59641-fungus.html What is this and how do I make it stop?! http://www.orchidboard.com/community/pests-diseases/59639-what-how-do-i-make-stop.html Fri, 11 May 2012 01:24:20 GMT This is a new orchid that I repotted into a new pot and new media. Within a day or so it started growing this fuzzy fibrous stuff which is between... This is a new orchid that I repotted into a new pot and new media. Within a day or so it started growing this fuzzy fibrous stuff which is between the two layers of this pot. It's a net pot surrounded by a plastic one. After I noticed it I wiped the pot down with bleach. I came back after a 4 day vacation to find it back. I then sprayed it down with physan solution. Will this fix the problem? Is this mold? Attachment 67937Attachment 67938
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]]> Eahonn http://www.orchidboard.com/community/pests-diseases/59639-what-how-do-i-make-stop.html Snails! http://www.orchidboard.com/community/pests-diseases/59593-snails.html Tue, 08 May 2012 22:31:53 GMT So now that I have a terrerium I bought a warmth tolerant masdie. It seems healthy, but so far I have pulled 4 tiny snails out of its pot. It is... So now that I have a terrerium I bought a warmth tolerant masdie. It seems healthy, but so far I have pulled 4 tiny snails out of its pot. It is potted in spagnum moss which probably gives the snails a nice, moist home. I need to get rid of them before they start eating my orchid. I was thinking of submerging the pot in water so they have to crawl to the surface, but I am concerned about the plant getting too wet. If I repot, is there something I should put on the roots in case there are eggs stuck to them or hiding snails? ]]> lily99 http://www.orchidboard.com/community/pests-diseases/59593-snails.html Tetranychus or Phytoseiulus persimilis? http://www.orchidboard.com/community/pests-diseases/59587-tetranychus-phytoseiulus-persimilis.html Tue, 08 May 2012 15:23:58 GMT Today I've found those insects on my Vanda (!) and my Miltonia! Can you please tell me what are those and what can I do to protect my plants?

Thank you in advance!
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]]> Neferet http://www.orchidboard.com/community/pests-diseases/59587-tetranychus-phytoseiulus-persimilis.html Phalaenopsis fallen leaves http://www.orchidboard.com/community/pests-diseases/59586-phalaenopsis-fallen-leaves.html Tue, 08 May 2012 12:31:25 GMT Hello! Problem with my phal is that it lost all its leaves. It started about month ago, when leaves were going yellow from the center od flower and... Hello!
Problem with my phal is that it lost all its leaves.
It started about month ago, when leaves were going yellow from the center od flower and then falling off.
As for now my flower doesn't have any leaves, but good looking, green roots.
Do you think is there any hope for "rebirth" of my phalaenopsis?
Photo #1 - 27 April,
#2 - 6 May
#3 - today after washing the roots.
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]]> Lukas90 http://www.orchidboard.com/community/pests-diseases/59586-phalaenopsis-fallen-leaves.html purple spots!!!! http://www.orchidboard.com/community/pests-diseases/59556-purple-spots.html Sun, 06 May 2012 17:22:36 GMT hello!!! i need help from a professional. some of my orchids (cattleya and dendrobium) have this purple spots on the leaves. the plant looks healthy... hello!!! i need help from a professional. some of my orchids (cattleya and dendrobium) have this purple spots on the leaves. the plant looks healthy but i´m worry about viruses. help me please!
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]]> marcecarloh http://www.orchidboard.com/community/pests-diseases/59556-purple-spots.html Orange eggs in hours and someone is eating the orchid.... http://www.orchidboard.com/community/pests-diseases/59538-orange-eggs-hours-someone-eating-orchid.html Sat, 05 May 2012 22:06:41 GMT Hi, in hours (i control the orchids twice a day or more) some pests had eaten a new leaf of the orchid and put a lot of eggs...see picture. The... Hi,

in hours (i control the orchids twice a day or more) some pests had eaten a new leaf of the orchid and put a lot of eggs...see picture.

The beasts were small,white and it jumped a lot..were in the bark.

So i have repotted the orchid, i cleaned the roots and the leafs of the plant .

what do you think?
The orchid was with anotherones(15) and in the house with a constant temperature of 22C degrees.
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]]> Adrianna http://www.orchidboard.com/community/pests-diseases/59538-orange-eggs-hours-someone-eating-orchid.html Blister on leaf http://www.orchidboard.com/community/pests-diseases/59535-blister-leaf.html Sat, 05 May 2012 20:03:08 GMT I have what appears to be a blister on my encyclia cordigera any one seen this sort of thing before. Should I be concerned. There is new growth on... I have what appears to be a blister on my encyclia cordigera any one seen this sort of thing before. Should I be concerned. There is new growth on the plant. some of the other leaves shave started yellowing on the ends and working their way to brown. May just be natural leaf die back I am not sure. I have owned the plant for less than 1 year. Any thoughts?Attachment 67750
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]]> Eahonn http://www.orchidboard.com/community/pests-diseases/59535-blister-leaf.html Drooping flowers and dark soggy roots on phalaenopsis http://www.orchidboard.com/community/pests-diseases/59506-drooping-flowers-dark-soggy-roots-phalaenopsis.html Sat, 05 May 2012 01:28:07 GMT Hi, I've received a pink phalaenopsis orchid two days ago that seems to be in bad condition. Its flowers are drooping and the roots are dark green and soggy (a sign of poor health). I am well aware that orchids should not look like this but have no idea why this is, and what I can do about it.
Could somebody please help me ?

[The room conditions are: lots of indirect light , near a window, 20 degrees Celsius]

THANK YOU!!! :)
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]]> Sahlav http://www.orchidboard.com/community/pests-diseases/59506-drooping-flowers-dark-soggy-roots-phalaenopsis.html Please help, what is on the leaves and pseudobulbs http://www.orchidboard.com/community/pests-diseases/59392-please-help-what-leaves-pseudobulbs.html Mon, 30 Apr 2012 21:03:28 GMT Attachment 67532 (http://www.orchidboard.com/community/attachments/pests-diseases/67532-please-help-what-leaves-pseudobulbs-orchid.jpg) Attachment 67533... Attachment 67532

Attachment 67533

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I'm new to orchids and I bought this oncidium a week and a half ago, it's a Beallara Tropic Lily ice palace and there are little black spots on the pseudobulbs and on the underside of some leaves and the pseudobulbs look shriveled. :(


I've already sprayed the leaves with a 3 in 1 fungicide/insecticide/miticide (garden safe fungicide 3) and I have only watered it twice with rain water (last monday and today) because I read on the board that the pseudobulbs shrivel due to underwatering or root rot? So I guess I should water it more often? Am I using the wrong product?
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]]> annnneeeeee http://www.orchidboard.com/community/pests-diseases/59392-please-help-what-leaves-pseudobulbs.html First time mommy of a budding oncidium-is there trouble? http://www.orchidboard.com/community/pests-diseases/59355-first-time-mommy-budding-oncidium-there-trouble.html Sun, 29 Apr 2012 17:01:01 GMT Well, I am (hopefully) soon to be the proud mommy of my first blooms from an oncidium ( I think it's an oncidium) and I'm really anxious. I have a phal that spiked, and the spike was visibly growing in length each day, but suddenly the tip got off color, and it looked ill. This phal spike then started growing again from the side of the 'ill' tip, and as we (I) speak, it's once more on it's way-but this post isn't really about that-just wanted to add a little background. :lol:The plant in question now (the oncidium) has two fairly large flower buds, but I'm not sure if they'll open. I'd post a pic but there are issues with this computer at the moment. Anyway, the flower buds are a yellowish white, which could just be an indication of what color the flower will be-or, it could mean that it's getting sick. ??? Am I just being a worry wart? :roll: ]]> greenpassion http://www.orchidboard.com/community/pests-diseases/59355-first-time-mommy-budding-oncidium-there-trouble.html Oncidium Sunny Days with spike damage http://www.orchidboard.com/community/pests-diseases/59335-oncidium-sunny-days-spike-damage.html Sat, 28 Apr 2012 17:39:33 GMT This would have been my first success at re-blooming an Oncidium. Alas, both previously very healthy looking spikes have now broken off about an inch... This would have been my first success at re-blooming an Oncidium. Alas, both previously very healthy looking spikes have now broken off about an inch and a half from the top. I took some pictures (not for the faint at heart!), but the forum doesn't let link to them: www dot flickr dot com/photos/shaggy67/sets/72157629554755042/, I have attached medium sized versions below.

I noticed the first broken spike last night. From the looks of it, it had happened some hours before already. This morning, the second spike was broken and I know for sure that my 3 year old had not been outside yet, so don't blame him! ;) Obviously, physical damage seems the most likely explanation, but we did not have much wind at all over night and this is the only plant with damage.

On the pictures, you will likely notice the white mealybug-looking spots that are probably white mealybugs. I first noticed these a handful of days ago and sprayed with Bayer's Natria, which unfortunately does not seem to help much. Not sure if the bugs or the spray could have caused the spike damage... halp!!! :((
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]]> sunkid http://www.orchidboard.com/community/pests-diseases/59335-oncidium-sunny-days-spike-damage.html Is treatment possible or should I toss this plant? http://www.orchidboard.com/community/pests-diseases/59305-treatment-possible-should-i-toss-plant.html Fri, 27 Apr 2012 20:55:53 GMT I sprayed all my orchids with Vermiliquid (http://orchidsamore.com/disease%20and%20pest%20control/Worm%20Tea%20Instructions.htm)(a form of worm tea)... I sprayed all my orchids with Vermiliquid (a form of worm tea) because I found scale and suspected other insects were present.

I've post edabout this NoID den phal before but I need help. This plant has been exhibiting leaf problems since last year and it's slowly lost leaves. I've quarentined it from the collection.

In the photos you can see how the symptoms evolved from 2-4 days after I sprayed Vermiliquid. I removed that leaf Wednesday and another one seems to be following the same path.

I don't know what's the cause. A friend who grows orchids took a look at the plant and couldn't determine the problem either. There are 2 new canes growing that are currently unaffected.

I have not tried a systemic treatment yet. Should I go that route--and which product to use? Or does it seem to be too late/ dangerous to keep this plant around?

Thank you for your suggestions.
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]]> NewBloom http://www.orchidboard.com/community/pests-diseases/59305-treatment-possible-should-i-toss-plant.html <![CDATA[Bud's home made bug-remedy?]]> http://www.orchidboard.com/community/pests-diseases/59281-buds-home-made-bug-remedy.html Thu, 26 Apr 2012 14:23:02 GMT Can someone please give me the recipe? It's water, soap (?), cinnamon...anything else? And in what quantities?

I have discovered some nasty, minimal, pests on my P. schilleriana when I watered it today. They are seriously miniscule and kind of greyish, with rather round bodies. I've never seen anything like them, but I'll try to find out what they are. For now I need to get rid of the ones on the P. schill (it was put in immediate isolation the second I noticed these buggers). So far I haven't discovered any on my other plants, but I won't know for sure until I drench them I think, they did NOT like the water, but I noticed they hopped on the surface on the water after I had dipped the P. schill in it - disgusting! I got rid of that water faster than you can say "PEST!" and checked the other plants I watered together with the P. schill (none was dipped after the P. schill so none shared the water with it, fortunately) and so far no signs of these pests.

Can you please help me? I'll give the schill a thorough wash with soap and water, and then spray it with pesticide. I would really like to use Bud's remedy though, since it won't harm the plants so I can spray ALL of them. Just as a precaution. ]]> The Mutant http://www.orchidboard.com/community/pests-diseases/59281-buds-home-made-bug-remedy.html Brown/black spots on Masd. coccinea http://www.orchidboard.com/community/pests-diseases/59264-brown-black-spots-masd-coccinea.html Wed, 25 Apr 2012 11:18:43 GMT I recently purchased 2 Masdevallia coccinea from an orchid grower online from TradeMe (our take on eBay), and he sent me 4 instead. Thought it was... I recently purchased 2 Masdevallia coccinea from an orchid grower online from TradeMe (our take on eBay), and he sent me 4 instead. Thought it was lovely, that he had lots laying around and just wanted to clear some out. Then I went to his nursery and he mentioned that he sourced them in every year to sell because they don't grow well in that area. thought it was weird then that he sent me extras when he purchases them from someone else and still had some others for sale.

Anyway, 3 out of the 4 have a lot of growth, but also horrible spots. some of the spots are just brown circles, and others are light brown puckerings on the underside of the leaf. then theres also what seems to be the leaf tip dying back.

did some research, and thought it was fungal, so i've sprayed them with neem oil. i live in a one room apartment, and only have one window where light comes through, so most of my orchids (minus the phals) are on a table near that. So, those three have to live outside/garage while they stink (got a huge surprise when i opened the bottle, big chunks of neem tree and its a horrid smell).

After more research on here, I'm now unsure if its fungal and might just be the growing conditions they were in before I got them? The other one I got thats spotless is much younger, with less than half the leaves and looks healthy. And the spotty ones have one/two new growths coming through as well. I have another one that I got last year (that I nearly killed before I found out they like to be crowded :/) that seems happy, spot free (and resilient...).

Should I keep going with the fungicide, or do you think it is just an environmental issue? Don't want to bring them back inside if they're going to infect some of the new plants I recently got. But don't want to be mean and leave them outside, as its been reaching 0 degrees Celsius (32 degrees Fahrenheit) in my area recently.
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]]> Gaia http://www.orchidboard.com/community/pests-diseases/59264-brown-black-spots-masd-coccinea.html White Fuzz on Phal http://www.orchidboard.com/community/pests-diseases/59092-white-fuzz-phal.html Mon, 23 Apr 2012 01:55:15 GMT I potted a bunch of seedlings in spag. over a week ago, now as the spag has dried out, I am starting to see more and more white fuzzy growth on a few... I potted a bunch of seedlings in spag. over a week ago, now as the spag has dried out, I am starting to see more and more white fuzzy growth on a few of the roots that are sticking above the spag. It seems mostly on the browner or more shriveled roots. Some had damage from the bare root shipping. Should I be concerned about the continuation of this as rot? I ordered some physan 20, should I give them a dunk in that for good measure? ]]> wendit http://www.orchidboard.com/community/pests-diseases/59092-white-fuzz-phal.html Help ! Fungal spot, huge vanda, lost the growing portion :( http://www.orchidboard.com/community/pests-diseases/59067-help-fungal-spot-huge-vanda-lost-growing-portion.html Sun, 22 Apr 2012 02:20:44 GMT Hi, I had seen a fungal spot on the top leaf of my healthy growing vanda, and while removing (sharp knife) the fungal spot, I damaged the active... Hi,

I had seen a fungal spot on the top leaf of my healthy growing vanda, and while removing (sharp knife) the fungal spot, I damaged the active growing portion.

Anyway, I treated the cut portion with mancozeb, but worried about the growing portion.

Please suggest me how to make it growing again ..

Help!! ]]> kaarthiik http://www.orchidboard.com/community/pests-diseases/59067-help-fungal-spot-huge-vanda-lost-growing-portion.html Spots on Phal leaf http://www.orchidboard.com/community/pests-diseases/59040-spots-phal-leaf.html Fri, 20 Apr 2012 20:17:41 GMT Today I noticed these little dark spots on my newest phal leaf. All the other leaves on the plant look completely fine. So I don't know what this is and what I should do about it. I suppose I could hit it with a systemic just for good measure? The spots are not raised or indented from what I can tell and do not show on the underside. Also do I need to quarantine this plant away from my others?
]]> Melody http://www.orchidboard.com/community/pests-diseases/59040-spots-phal-leaf.html need your help, help my orchid http://www.orchidboard.com/community/pests-diseases/59038-need-your-help-help-my-orchid.html Fri, 20 Apr 2012 18:45:47 GMT could anybody tell me what has happened tomy plants and how to cure it :( By the way, first two photos- one orchid, third photo is another orchid,... could anybody tell me what has happened tomy plants and how to cure it :(
By the way, first two photos- one orchid, third photo is another orchid, and the last photo is my mini orchid,
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]]> arune http://www.orchidboard.com/community/pests-diseases/59038-need-your-help-help-my-orchid.html Fungus,mould or neither? http://www.orchidboard.com/community/pests-diseases/59037-fungus-mould-neither.html Fri, 20 Apr 2012 17:42:35 GMT I was doing some repotting today and I noticed that on my paph maudiae there was some strange growth growing quite happily in the medium bark medium.... I was doing some repotting today and I noticed that on my paph maudiae there was some strange growth growing quite happily in the medium bark medium. Humph, I had quite a scare when I spotted it because at first I thought that it was fungus but now that I think about it I think that it could be a dandelion clock seed that actually managed to germinate in my medium! - the cheek!! Does anyone know what might have caused this to happen? I have obviously repotted my paph and poured h/p on it just to be safe.




]]> Susie11 http://www.orchidboard.com/community/pests-diseases/59037-fungus-mould-neither.html Not sure what this is... http://www.orchidboard.com/community/pests-diseases/59022-not-sure-what.html Thu, 19 Apr 2012 15:18:31 GMT ...so maybe someone on here can help. I have an sh pot full of Onc twinkles and one species Onc that is used in the twinkle lines. But what is... ...so maybe someone on here can help. I have an sh pot full of Onc twinkles and one species Onc that is used in the twinkle lines.


But what is going on with the leaves? I have it in sh, the affected leaves are both old and new, though more of the old ones are affected than the new ones, and I have it on a heating mat. Roots and bulbs actively growing and I water weakly weekly with a 20, 10, 20 grow more urea free fertilizer, with Epsom salt added, just a pinch to a gallon bucket, and they're grown under lights, at least until it's warm enough to move them outside.

Any ideas?



]]> Pilot http://www.orchidboard.com/community/pests-diseases/59022-not-sure-what.html Virus or what? http://www.orchidboard.com/community/pests-diseases/59020-virus-what.html Thu, 19 Apr 2012 13:43:05 GMT Hello, Today i received an orchid order from abroad and I noticed a strange patterning on a leaf of one of the Cattleya maxima i received. Here is... Hello,

Today i received an orchid order from abroad and I noticed a strange patterning on a leaf of one of the Cattleya maxima i received. Here is a photo of it:


Is this virus or is it caused by something else? What could have caused that?

I also noticed purple spots on one of the leafs on each of the other Cattleya maxima i received(3 plants total). Is this normal for the species?Here are 2 photos of the spotting:




Thank you very much in advance!:) ]]> Kostas http://www.orchidboard.com/community/pests-diseases/59020-virus-what.html Sterilizing cutting tools. http://www.orchidboard.com/community/pests-diseases/59002-sterilizing-cutting-tools.html Wed, 18 Apr 2012 15:18:53 GMT In another thread we were discussing how to sterilize cutting tools to prevent the spread of virus. In that thread I said: On further research I... In another thread we were discussing how to sterilize cutting tools to prevent the spread of virus. In that thread I said:

On further research I have to conclude that Physan is likely not capable of destroying most plant viruses.

I am going to have to rethink my tool (clippers) cleaning strategy. Hypochlorite is effective but it is corrosive to metal. Formaldehyde and glutaraldehyde are effective but they are nasty smelling and just generally nasty. Chlorine dioxide solutions are effective but are rapidly destroyed by sunlight. Alcohols are not very effective. I may have to start flaming my tools. I wonder if an alcohol lamp would be sufficient for flaming my clippers?


I have decided to move to flame sterilization, probably using a butane or propane torch.

One problem is the Fiskars brand shears that I am using have a lot of plastic - on the handle and in a lock slide.
I expect that I will likely eventually ruin that as I flame the blades. Japanese hand pruning shears are often available constructed only of metal. I would like some that have a spring that opens the blades. Does anyone have suggestion for a good but not too expensive brand? ]]> DavidCampen http://www.orchidboard.com/community/pests-diseases/59002-sterilizing-cutting-tools.html Indentations on Phal leaf http://www.orchidboard.com/community/pests-diseases/59000-indentations-phal-leaf.html Wed, 18 Apr 2012 09:48:01 GMT I noticed this today on one of my Phal's leaves. What the heck is it? It's not soft or anything like that and it's only on the top side of the leaf.

The Phal is already isolated due to the very yellow leaf tip it has on one of its older leaves. I know that they normally lose their older leaves, but the yellow colouration was so very sharp on this leaf that I decided to isolated and keep it monitored.
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]]> The Mutant http://www.orchidboard.com/community/pests-diseases/59000-indentations-phal-leaf.html Phal. Cassandra leaves http://www.orchidboard.com/community/pests-diseases/58990-phal-cassandra-leaves.html Wed, 18 Apr 2012 02:39:42 GMT My best friend bought me the cutest little Phal. Cassandra. I noticed the leaves right off and was concerned but didn't say anything. I wasn't sure if it was a problem with bacteria, virus or some other issue. I'm keeping this one at work and well away from the others in my collection. The last thing I need is to kill them all, especially since I just started getting them to bloom for me. Please help me identify what is going on with this little cutie.

Oh yeah, HI EVERYONE!!!! :llama:
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]]> Amanda L http://www.orchidboard.com/community/pests-diseases/58990-phal-cassandra-leaves.html What is this on my leaves? http://www.orchidboard.com/community/pests-diseases/58924-what-my-leaves.html Sun, 15 Apr 2012 14:43:35 GMT Image: http://www.orchidboard.com/community/members/paul-mc-albums-mite-issues-picture8425-leaves-small.jpg Background: I bought this about a...

Background: I bought this about a month ago and noticed some discoloration on the leaves but assumed it was from shipping or mishandling. I got it home and examined the roots and a lot of them were dead, so I repotted and cleaned the plant immediately. It's an Epidendrum "Fantasy Valley". Over the course of the next few weeks, many leaves shriveled and died which was not that surprising. However, now many leaves are exhibiting various stages of this zig zag black line, yellowing and wilting. Now, I'm thinking something else is going on. What could it be?!!! ]]> Paul Mc http://www.orchidboard.com/community/pests-diseases/58924-what-my-leaves.html Squirrel disaster http://www.orchidboard.com/community/pests-diseases/58781-squirrel-disaster.html Wed, 11 Apr 2012 18:28:13 GMT Does anyone know if Bone Meal attracts squirrels? I am in Brooklyn NY and in the spring / summer I keep plants and many orchids outside on the fire... Does anyone know if Bone Meal attracts squirrels? I am in Brooklyn NY and in the spring / summer I keep plants and many orchids outside on the fire escape.

The squirrels made a disaster worse than the past year. I wonder if adding bone meal attracted them or it is just a more aggressive batch.

Any suggestions? I had sprinkled habanero powder weeks ago. I make my own spray with pepper and garlic and I wonder if it sticks. Are those sprays with pepper that sell at HD/ Lowes effective? do thy stick any experiences?

damage:

Lc Tropical Pointer: DISAPPEARED but 2 leaves!
Laelia lundii disappeared ( I have a 2 pb division mounted so I am backed up)
Blc Momilani Rainbow 3 PB gone.
Den Hamana Smile 1 PB chomped.

Pomegranate, Mandarin, Coccoloba uvifera (of this I have a few more) cut down to the ground.

3 ft ficus benjamina now is bonsai material, cut half in height, tapered trunk.

Habanero peppers that I overwintered to get them going early (one started to bloom and produce) cut back to stumps to the ground!


I hope the mandarin and pomegrate can sprout back from the soil level cut. ]]> stefpix http://www.orchidboard.com/community/pests-diseases/58781-squirrel-disaster.html Beneficial Bugs http://www.orchidboard.com/community/pests-diseases/58763-beneficial-bugs.html Wed, 11 Apr 2012 02:32:53 GMT Hello all, As requested I have started this thread to share with you some of my bugs and how I culture them. There are some very informative... Hello all,

As requested I have started this thread to share with you some of my bugs and how I culture them. There are some very informative threads on other forums and there might be some info here too somewhere but why have our own thread here about this stuff.

Anyone with any kind of experience with any beneficial animals or plants please feel free to add on. I am all about the biological control :)

First I will discuss springtails or Collembola of which I culture the temperate variety. They are tiny white insects with an amazing ability to jump or "spring". They live in very high humidity and feed on detritus, mold, and fungi. I keep mine in a variety of media such as lava rock, coco fiber, and charcoal. I am even experimenting with bio balls, and LECA. The most common and probably cheapest is charcoal. Just normal charcoal not the bricks , break it up so you have all sizes of chunks just avoid the fine stuff. RINSE IT LOTS !!. For orchid people who have the horticultural charcoal already, go ahead spoil the little guys :) OK now put some charcoal in a watertight container so that you have at least an inch or so. The charcoal serves as real estate as they live in the gaps formed from the natural layering of the chunks. Now add some water until you have a thin layer BELOW the charcoal. They springtails float on water but they don't really live on it. The water layer is to keep the humidity up and the charcoal moist. For food you can feed them many organic items ranging from fish flakes to bakers yeast. I mostly use ground up dried mushrooms as I have had great results with that.
The pictures again are with my cell phone but you can still see the little guys :biggrin:

Next I will discuss Isopods or Porcellio scaber. These guys are also really easy to take care of. I keep them in a mix of leftover potting media so basically everything. They will also eat anything so when you don't feed them in your enclosure they eat detritus which is why I keep them. While I"m culturing them though I mostly feed them good quality dog food and fish flakes. They ake longer to reproduce than springtails but they also live longer and are much easier to see. Again the pics are with the phone but you can see the little guys and how I keep them.

I also wanted to briefly discuss some forms of biological control I use in the aquatic sections of my tanks. My favorite of all are assassin snails or Clea helena. These snails will hunt and eat smaller aqautic snails which have a habit of infesting my water sections. I think they are really pretty and cool to watch and they are also good at what they do Another form I use in the water is Aquatic Carnivorous plants like Utricularia gibba which I find very usefull at trapping all kinds of larvae and other bugs that infest my water in the summer.

It's really cool to watch all these little guys and I sooooooooooooo wish I had a better camera to show you guys this stuff in HD or something. Anyways I hope this is a good start to what will become a very informative thread.

Cheers
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]]> MAli http://www.orchidboard.com/community/pests-diseases/58763-beneficial-bugs.html Coffee vs. snails http://www.orchidboard.com/community/pests-diseases/58681-coffee-vs-snails.html Mon, 09 Apr 2012 04:06:57 GMT I recently acquired a new vanda (Robert's Delight 'Black') and it came with some hitchhiking bush snails. For the last 3 days I have been spraying it down with undiluted coffee dregs in the pm (before bed) and then hosing it or soaking it with water in the am as per usual watering routine. I haven't seen any snails since 12 hrs after the first coffee treatment.

Therefore, I was wondering how long those who have been successful with this method have treated and if this sounds like a good or bad routine for the welfare of the plant. This is a substantially sized plant, but I can provide pics if this would help determine what the plant can safely tolerate. Should I bump back to every other day or more on the coffee treatment?

I have placed out a potato this evening to see who shows up. Good news is that so far, I have 1 out of 2 untouched new nubbin roots!! Thank you for any help!! :) ]]> Coconutmuffn http://www.orchidboard.com/community/pests-diseases/58681-coffee-vs-snails.html Speciosa and Bellina issues http://www.orchidboard.com/community/pests-diseases/58670-speciosa-bellina-issues.html Sun, 08 Apr 2012 20:19:44 GMT Check out the photos. The Speciosa is in bloom right now, despite losing its lead leaf and the clear issues it has. Any suggestions of what it is and... Check out the photos. The Speciosa is in bloom right now, despite losing its lead leaf and the clear issues it has. Any suggestions of what it is and how to treat it?

Speciosa,




Bellina,

]]> Pilot http://www.orchidboard.com/community/pests-diseases/58670-speciosa-bellina-issues.html Infection or not? http://www.orchidboard.com/community/pests-diseases/58635-infection-not.html Sat, 07 Apr 2012 23:28:00 GMT I was wondering if my phalenopsis is infected or the top leaf is just dying?..is this natural and if not what can i do to prevent it from happening... I was wondering if my phalenopsis is infected or the top leaf is just dying?..is this natural and if not what can i do to prevent it from happening again? :biggrin::(:evil: [IMG][/IMG] ]]> flowper http://www.orchidboard.com/community/pests-diseases/58635-infection-not.html <![CDATA[Den Phal's leaves mysterious fade and color loss]]> http://www.orchidboard.com/community/pests-diseases/58597-den-phals-leaves-mysterious-fade-color-loss.html Sat, 07 Apr 2012 07:46:13 GMT Hi gang, My NoID den phal has lost leaves starting around December. This occured even on the newest cane. It still flowered as usual though. The... Hi gang,

My NoID den phal has lost leaves starting around December. This occured even on the newest cane. It still flowered as usual though. The problem started one leaf and a time with a fading of the green color then going to yellow before falling off.

I've had the plant for 2 years and this is not the traditional shedding of an old leaf. It's been in the same shaded spot so sunlight isn't responsible for whatever this is.

The photos were taken this week. You can see there's a pattern and there's also a texture change in the leaf. The black spots on one cane have been there for months and never progressed.

Could this be a virus or nutritional difficiency? It's putting out new canes and the time to repot is here. I am holding off in case it's a virus and I have to toss the plant.

Btw, I switched back to an old batch of Better-Gro fertilizer and rested the DynaGro Grow formula. I think DynaGro has calcium while the BG does not. I started adding espon salts (1/4 tsp per gallon) to my fertilizer routine. Could that cause a problem? I noticed a similar "green fade" on an oncidium but that occured long after the Den Phal exhibited leaf changes.

You guys' help is appreciated.
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]]> NewBloom http://www.orchidboard.com/community/pests-diseases/58597-den-phals-leaves-mysterious-fade-color-loss.html Is this fungal? http://www.orchidboard.com/community/pests-diseases/58542-fungal.html Thu, 05 Apr 2012 11:02:52 GMT Yesterday I got a new bulbophyllum grandiflorum in the post from Germany. It spent no longer than two days on route. When it arrived it looked to be... Yesterday I got a new bulbophyllum grandiflorum in the post from Germany. It spent no longer than two days on route. When it arrived it looked to be in a great condition. It was firm and had beautiful light green leaves. This morning I noticed that the main leaf has a depressed spot which seems to be yellowing. I wonder is this environmental or has it acquired a fungal infection?

When it arrived yesterday

This morning


]]> Susie11 http://www.orchidboard.com/community/pests-diseases/58542-fungal.html Virus - P. equestris? http://www.orchidboard.com/community/pests-diseases/58529-virus-p-equestris.html Wed, 04 Apr 2012 21:52:45 GMT I'm starting to get a bit worried about one of my baby P. equestris - the second to bloom of the two in spike I have.

The first flower to open was misshapen and had some strange colouration. It also won't open and stretch/flatten out as a typical P. equestris flower is supposed to do (and as the flowers on the mother plant do). The second flower started open this morning, and still hasn't opened properly, but as far as I can tell, it is also misshapen and has the same streaks as the first one, even on the lip. If I compare this with my other premier bloomer, that one's flowers don't have these streaks, or misshapen lips/petals/sepals, but then they're not the same clones...

The rest of the plant looks perfectly fine with healthy green leaves, a new root and new growth on the old ones, as well as a new leaf growing. The rest of the buds, however, all look a bit off, shape-wise, so I think the flowers will continue looking strange.

So, should I worry? Could it be virus or is it just the fact that it's a first-time bloomer that can have this effect on the flowers? I've isolated it as a precaution, but I don't know what good it'll do considering it has rubbed leaves with its Phal pals for six weeks already. :(

Ah, yes, almost forgot; I re-potted it recently since there was a bit of an algae infestation going on in the pot, I don't know if the re-potting could've caused this to happen to its flowers (doubt it though).

Here you have two pics of the first flower, I'll upload some pictures of the rest of the plant and the second flower tomorrow when I can take some pics of it:





Here you have a link to what the mother plant's flowers look like: Mommy equestris
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]]> The Mutant http://www.orchidboard.com/community/pests-diseases/58529-virus-p-equestris.html Anyone heard of Dimethyl ammonium chloride with urea? http://www.orchidboard.com/community/pests-diseases/58495-anyone-heard-dimethyl-ammonium-chloride-urea.html Wed, 04 Apr 2012 00:23:24 GMT A few members in our orchid society including myself have had problems with some of our Phals being stricken with some form of disease that is highly... A few members in our orchid society including myself have had problems with some of our Phals being stricken with some form of disease that is highly contagious to other Phals . It causes unsightly streaking, yellowing and pitting of the leaves. Every new leaf grows clean and healthy looking but in time it develops the same condition. We have all experienced contagious spreading to any Phal nearby. The only solutions seems to be to throw the plant out and thoroughly sanitize the area. Not sure if that is even enough to protect other Phals.

Recently we came upon an article describing what sounds like the very same problem. And the author found a cure by using Dimethyl ammonium chloride with urea. Here is the article in English even tho it appears not to be English: Orquídeas, nossas flores...: Nova doença de Phalaenopsis vindos de Taiwan

Has anyone ever used this or have any idea what strength would be safe to actually apply to the orchid? I have done some research and this chemical without the urea is used as a sanitizing chemical for greenhouses and many other applications. I ordered some but it doesn't have the urea. I would appreciate any insight anyone can share on this as to how to use it or if they tried it and if I can use the stuff without the urea and maybe just add fertilizer. It would sure be nice to have a solution to this disease that has been going around for several years. ]]> silken http://www.orchidboard.com/community/pests-diseases/58495-anyone-heard-dimethyl-ammonium-chloride-urea.html Little black nats flying around? http://www.orchidboard.com/community/pests-diseases/58482-little-black-nats-flying-around.html Tue, 03 Apr 2012 15:23:29 GMT I have recently gotten into moss terrariums, using clear glass vases, and the moss is from my woods here in VT. These are situated on and under a... I have recently gotten into moss terrariums, using clear glass vases, and the moss is from my woods here in VT. These are situated on and under a glass shelf that holds my orchids of several varieties, all in S/H. Thus far I've never had these "fungus knats' before, and I think I've inadvertently introduced them to the area via the moss. Will these hurt my orchids? And how do I get rid of them, without if possible, getting rid of my little moss terrariums? :( ]]> greenpassion http://www.orchidboard.com/community/pests-diseases/58482-little-black-nats-flying-around.html Home Depot Phalaenopsis http://www.orchidboard.com/community/pests-diseases/58418-home-depot-phalaenopsis.html Sun, 01 Apr 2012 23:22:55 GMT I just bought one from home depot, first orchid here. Looking around the roots I see a few brown roots, mostly green, and one dried up root. ... I just bought one from home depot, first orchid here.

Looking around the roots I see a few brown roots, mostly green, and one dried up root.

The leaves also have these white dots underneath the leaf and little 'dents' on top of the leaf.

Any ideas what's going on?

Brown roots, my guess excessive moisture? I'll be leaving it to dry out for this week.


Thanks
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]]> R3ality http://www.orchidboard.com/community/pests-diseases/58418-home-depot-phalaenopsis.html Dozens of orchids dying to a strange fungus? PICS http://www.orchidboard.com/community/pests-diseases/58406-dozens-orchids-dying-strange-fungus-pics.html Sun, 01 Apr 2012 17:29:35 GMT Hello!

I work at a Gardening Supply. We've had good luck with previous orchid orders, but nearly every plant in the last order came with a strange fungus. The leaves start by wilting and turning yellow, from the bottom of the plant up. Eventually, a strange round pattern develops encircled by another round pattern. Very strange. Any advice on diagnosis and treatment?

Hope the pic worked.

Thank you so much,
Karl
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]]> imationkarl http://www.orchidboard.com/community/pests-diseases/58406-dozens-orchids-dying-strange-fungus-pics.html Bicarbonates for mildew and fungus http://www.orchidboard.com/community/pests-diseases/58358-bicarbonates-mildew-fungus.html Sat, 31 Mar 2012 10:56:01 GMT Potassium bicarbonate anyone ? Ammonium bicarbonate ? Sodium bicarbonates ? Ray I think this question is for you..:hello. I was looking... Potassium bicarbonate anyone ?

Ammonium bicarbonate ?

Sodium bicarbonates ?

Ray I think this question is for you..:hello.

I was looking at rotating some different fungicides bec i don't want to make any resistant strains..hmmmm

SubdueMaxx looks like good stuff at about 1000 bucks a gallon.

They always seem to leave out orchids. They list everything else under the flipping sun but orchids..Orchids are the rodney dangerfields of the plant world.

greenhouse grown ornamentals would include orchids in a round about way I assume.

Chime please ]]> RJSquirrel http://www.orchidboard.com/community/pests-diseases/58358-bicarbonates-mildew-fungus.html Ew! Millipedes! http://www.orchidboard.com/community/pests-diseases/58355-ew-millipedes.html Sat, 31 Mar 2012 09:29:27 GMT Few weeks ago I bought some plants from the RHS Orchid show. One of them turned out to have a nice little nest of millipedes. I soaked the plant in... Few weeks ago I bought some plants from the RHS Orchid show. One of them turned out to have a nice little nest of millipedes. I soaked the plant in water with some dish washing liquid in it (Ecover, since I thought that would probably be safe!). After a couple of hours quite a few of the milis had jumped ship and were sluggish if not drowned, and off down the drain they went... No sign since, plant since repotted, all seems well.

Then today I spotted some movement in a plant I've had since before Christmas. Looking closer: well I could only see part of it's body as it trundled through the roots, but there was a HUGE millipede.

What's really making me shudder is there's no way it was in the tiny pot with the nest. I suppose it could have come from another new plant if they are happy to walk a foot or two between plants and scramble up and down plastic... but I'm thinking the chances are that it's been in that plant the whole time I've had it.

I'm not sure the plant is going to be deep enough in a bucket... may need to use a bath. Need to brace myself first though.... ]]> Rowangreen http://www.orchidboard.com/community/pests-diseases/58355-ew-millipedes.html Is my Phal sick? http://www.orchidboard.com/community/pests-diseases/58323-my-phal-sick.html Fri, 30 Mar 2012 19:12:55 GMT Hello everyone. I bought a Phalaenopsis (don't know the exact species though) about 2 months ago. When I bought it I had not read too much about orchids so I did not know how to look for a healthy one. After a while I noticed that the leaves on my new phal were not like the leaves of my other phals. This got me a bit worried. The leaves are green with dark green spots, but not like what you see with some paphiopedilums, it does not look like a leaf pattern, it looks like a disease. One of the leaves has a hole in it (which cannot be from too much sun exposure because I never let them in the sun). Also, the corners of the leaves are of a purple color underneath, and the flower spike is completely spotted, but I think this might be from the plant itself since its flowers are also spotted. I'll attach some pictures to this thread. I would really appreciate if someone could help me! Thank you so much!
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]]> Panino http://www.orchidboard.com/community/pests-diseases/58323-my-phal-sick.html Is This Erwinia on my Phal leave? http://www.orchidboard.com/community/pests-diseases/58321-erwinia-my-phal-leave.html Fri, 30 Mar 2012 18:55:55 GMT Here are a few pics of what I suspect is the dreaded Erwinia bacteria. Not 100% sure If it is what are the best solutions for erradicating it.... Here are a few pics of what I suspect is the dreaded Erwinia bacteria. Not 100% sure
If it is what are the best solutions for erradicating it.
Thanks in advance.
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]]> bronco http://www.orchidboard.com/community/pests-diseases/58321-erwinia-my-phal-leave.html <![CDATA[Worried about grandma's orchid]]> http://www.orchidboard.com/community/pests-diseases/58303-worried-about-grandmas-orchid.html Thu, 29 Mar 2012 22:51:30 GMT Hello All!
Recently I inherited an phaleonopsis orchid from my husband's grandmother (she moved into a nursing home and left the orchid in my care). I am completely new to orchids and have been trying desperately to keep it alive. Around Christmas time it sent up two spikes and has been blooming beautifully since then. Here's the problem, recently all of the leaves have started yellowing and developing dead spots and eventually falling off. I know that leaf loss is a natural part of the orchid life cycle, but I'm very concerned since all the leaves appear to be dying. Also, many of the roots appear to be shriveling up and turning brown. There is one new leaf that looks like it may be growing, but i think that one is starting to yellow too. Ive been watering the plant about once a week and keeping it in a sunny window.




Help! Did I just kill grandma's orchid??
Thanks! ]]> rannfar http://www.orchidboard.com/community/pests-diseases/58303-worried-about-grandmas-orchid.html need a good cat deterrent for outside http://www.orchidboard.com/community/pests-diseases/58271-need-good-cat-deterrent-outside.html Thu, 29 Mar 2012 00:17:40 GMT My cat keeps knocking my orchids over or dislodges them from their pots by rubbing her face against them. I need a good deterrent to place on the... My cat keeps knocking my orchids over or dislodges them from their pots by rubbing her face against them.

I need a good deterrent to place on the ground to surround them. Any suggestions? ]]> beaniebeagle http://www.orchidboard.com/community/pests-diseases/58271-need-good-cat-deterrent-outside.html What happened to the bud? http://www.orchidboard.com/community/pests-diseases/58269-what-happened-bud.html Wed, 28 Mar 2012 23:48:22 GMT Attachment 66348 (http://www.orchidboard.com/community/attachments/pests-diseases/66348-what-happened-bud-dend.dalswonder-x.jpg) This beautiful Dend. (4 crosses), was going to be benched... Attachment 66348 This beautiful Dend. (4 crosses), was going to be benched this weekend at our Autumn Fair, but something happened to one of the buds?(just to the left at the back). Has an insect got to it? Can I just cut off that bud and still try to show it?
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]]> Queenslander http://www.orchidboard.com/community/pests-diseases/58269-what-happened-bud.html Tiny Bark Bugs http://www.orchidboard.com/community/pests-diseases/58233-tiny-bark-bugs.html Tue, 27 Mar 2012 14:48:36 GMT I noticed about a year ago that there were many tiny little bugs all over the bark in my phalaenopsis pot. These bugs are the size of a little dot,... I noticed about a year ago that there were many tiny little bugs all over the bark in my phalaenopsis pot. These bugs are the size of a little dot, pretty much like this -> .
They are are of a greyish/black shiny color.
After one year I thought they were gone because I simply didn't notice them (probably because they are so small). However, I have just noticed they are still there and I'm starting to worry if these little buggers could potentially harm my orchid. I must say I do not see any damage on the orchid, not on the leaves, nor the roots, nor on the flowers. It really seems like they are only interested in the bark. Should I be worried? Or should I just let my orchid and the little bugs coexist? ]]> Panino http://www.orchidboard.com/community/pests-diseases/58233-tiny-bark-bugs.html Phalaenopsis WAS healthy now the leaves are dieing and falling off. http://www.orchidboard.com/community/pests-diseases/58212-phalaenopsis-healthy-now-leaves-dieing-falling-off.html Mon, 26 Mar 2012 19:51:19 GMT I received my Phal a year ago. It had two lovely spikes. When the blooms fell, I cut one spike and trimmed the other which bloomed again. Then we... I received my Phal a year ago. It had two lovely spikes. When the blooms fell, I cut one spike and trimmed the other which bloomed again. Then we moved in early Jan. It seemed to take it well. The blooms fell in late Feb and I cut that spike off as well. Now the two lower leaves have turned yellow and died. :( What happened and what can I do now? ]]> AJRay http://www.orchidboard.com/community/pests-diseases/58212-phalaenopsis-healthy-now-leaves-dieing-falling-off.html PLEASE HELP! Possible Disease?? http://www.orchidboard.com/community/pests-diseases/58159-please-help-possible-disease.html Sun, 25 Mar 2012 18:31:55 GMT Hello-

I recently aquired a "Dracula" Orchid a few weeks ago. It is not in bloom. It has these black spots on it that seem to be getting worse, and have lost two leaves already, which were a yellowish color and soft by the end. I have only used fresh rain water and it is in a bark/fur mixture. I examined the roots before trasplanting a few weeks ago and there were no signs of fungus or rot/mold. I have lots of experience with Paphs and phals, but am quite intimidated by this one. Does anyone have any idea what this is? and if so what I should by to help this poor thing.

Thank you all so much!

Tawni
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]]> tawnimartin http://www.orchidboard.com/community/pests-diseases/58159-please-help-possible-disease.html Black mold on moss. http://www.orchidboard.com/community/pests-diseases/58128-black-mold-moss.html Sat, 24 Mar 2012 14:30:26 GMT I appear to have some type of black mold growing on my sphag moss. It isn't on any of my orchids. My camera isn't working for me right now, but I'm pretty sure it's black mold (I don't know what else it could be). Does anyone have ideas on how the get rid of it. Some of it is growing on mounted stuff so removing the moss isn't really an option. ]]> Wjs2nd http://www.orchidboard.com/community/pests-diseases/58128-black-mold-moss.html <![CDATA[New Miltonia Berries n' Cream w/black spots on leaves HELP! (x-post)]]> http://www.orchidboard.com/community/pests-diseases/58105-new-miltonia-berries-n-cream-w-black-spots-leaves-help-x-post.html Fri, 23 Mar 2012 14:40:59 GMT Hi--

I just got this little guy last week. So far the pseudobulbs look fine but I have several leaves with black spots showing. I've sprayed it with a combo insecticide/fungicide.

Should I cut the infected leaves off the plant? One pseudobulb will be leafless if I do. If I don't cut them off, how can I keep it from spreading?

Anyone know what this is? The rest of my plants are fine but I've moved the Milt away from the rest just to be safe.

Thanks in advance!
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]]> ElenaMarie http://www.orchidboard.com/community/pests-diseases/58105-new-miltonia-berries-n-cream-w-black-spots-leaves-help-x-post.html Errr...scale is back. http://www.orchidboard.com/community/pests-diseases/58042-errr-scale-back.html Thu, 22 Mar 2012 01:34:49 GMT So I've been battling scale for awhile now. They kinda come and go and just when I think I got em....you know. I've even gotten rid of one plant that was a scale magnet. I've been holding off on the toxic stuff as a last resort so just a question. Is insecticidal soap at all effective for scale. I don't know if it would work on established adults but how about on young and eggs? ]]> Phal grower http://www.orchidboard.com/community/pests-diseases/58042-errr-scale-back.html Root Problem http://www.orchidboard.com/community/pests-diseases/58038-root-problem.html Thu, 22 Mar 2012 00:42:04 GMT Something is up with some of my roots. They grow very well. Nice and plump, bright white with green tips. Then on some, the root tips die. They turn... Something is up with some of my roots. They grow very well. Nice and plump, bright white with green tips. Then on some, the root tips die. They turn black and the root starts to die. Sometimes the whole root and other times just a little of it. This happens with different genera not just one. There's nothing wrong with the orchid plants themselves. I've wondered if it was my water. I live in the country so we have well water. It's very soft and has a ph of 7.0. I don't remember having this problem when I lived in the city. What do you think?
Thanks! ]]> orchid-eric http://www.orchidboard.com/community/pests-diseases/58038-root-problem.html Help I have mealy bugs! http://www.orchidboard.com/community/pests-diseases/58029-help-i-have-mealy-bugs.html Wed, 21 Mar 2012 21:37:09 GMT I have never had these before what do I do? They are all over the blooms!!! I am swabbing them off with alcohol. Is this going to damage the blooms... I have never had these before what do I do? They are all over the blooms!!! I am swabbing them off with alcohol. Is this going to damage the blooms is there a better way? ]]> Eahonn http://www.orchidboard.com/community/pests-diseases/58029-help-i-have-mealy-bugs.html Purple leaves http://www.orchidboard.com/community/pests-diseases/57888-purple-leaves.html Sun, 18 Mar 2012 09:17:31 GMT my friend has this problem, someone can help us understand what it is? Image: http://i44.tinypic.com/2q1yttt.jpg Image:... my friend has this problem, someone can help us understand what it is?












thanks in advance :waving ]]> roby http://www.orchidboard.com/community/pests-diseases/57888-purple-leaves.html Viral infection? http://www.orchidboard.com/community/pests-diseases/57864-viral-infection.html Sat, 17 Mar 2012 05:17:49 GMT The plant is Epidendrum ciliare. I have noticed the leaves are waved in cross section but the blooms revealed no sign of viral infection. Today, i... The plant is Epidendrum ciliare.
I have noticed the leaves are waved in cross section but the blooms revealed no sign of viral infection. Today, i see the new growth that has yellow striae on the leaf, which seems to be virused. Do you have any recommend? Thanks in advance.
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]]> pheli http://www.orchidboard.com/community/pests-diseases/57864-viral-infection.html Black round spots on Phal http://www.orchidboard.com/community/pests-diseases/57689-black-round-spots-phal.html Sun, 11 Mar 2012 13:17:13 GMT Hi everyone , this morning i was looking at my phal and found out it had a couple of black round spots on the leaves. I started browsing orchid virus... Hi everyone , this morning i was looking at my phal and found out it had a couple of black round spots on the leaves. I started browsing orchid virus links and bacterial links and haven't found out what this is. If anyone could help identify it i would appreciate it. Thanks in advance!
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]]> Neferet http://www.orchidboard.com/community/pests-diseases/57689-black-round-spots-phal.html is floramite safe for orchids? http://www.orchidboard.com/community/pests-diseases/57670-floramite-safe-orchids.html Sat, 10 Mar 2012 20:30:06 GMT Is floramite safe for orchids? Also, would you recomend spraying an entire collection(30 plants) or just the infected? I think only a few are... Is floramite safe for orchids? Also, would you recomend spraying an entire collection(30 plants) or just the infected? I think only a few are infected. I ask because of the mites ability to build resistance. I already have floramite due to a massive spidermite infestation on my cannabis plants. And will be alternating with avid. So no bother recomending cheap or home made solutions. Thanks for any help. ]]> secretasiansam http://www.orchidboard.com/community/pests-diseases/57670-floramite-safe-orchids.html cymbidium mosaic virus testing? http://www.orchidboard.com/community/pests-diseases/57633-cymbidium-mosaic-virus-testing.html Fri, 09 Mar 2012 01:48:22 GMT I have a Brassidium hybrid that may have virus, since it has some leaf spotting and streaking on the leaves, particularly the oldest ones. I came to... I have a Brassidium hybrid that may have virus, since it has some leaf spotting and streaking on the leaves, particularly the oldest ones. I came to this conclusion after seeing some online pictures that look very much like what it has. However, I also know that Brassidium can develop leaf spotting in very bright light..and since I really like this orchid, I don't wanna toss it unless I know for certain. So, I was just wondering how does the process of testing work, and are there are any places that do it for a low cost?

Thanks. ]]> Exo http://www.orchidboard.com/community/pests-diseases/57633-cymbidium-mosaic-virus-testing.html Paphiopedilum Leaf Spot!? Help! http://www.orchidboard.com/community/pests-diseases/57596-paphiopedilum-leaf-spot-help.html Thu, 08 Mar 2012 02:15:47 GMT Hey all! Two of my paphs had black spots on the leaves when I bought them originally. Thinking it was just mechanical damage I paid no mind to... Hey all!

Two of my paphs had black spots on the leaves when I bought them originally. Thinking it was just mechanical damage I paid no mind to it. Now these black spots have gotten bigger and have actually began to spread to my other paphs. After doing some research I found it could be a fungal leaf pathogen, bacteria or virus. I want to try and save whatever plants I can prior to this pathogen spreading throughout my collection (which it already started). I have some pictures attached if anyone could help better diagnose the problem so I don't lose any of my slippers!

Thanks in advance for any help,

Pete ]]> iiwii http://www.orchidboard.com/community/pests-diseases/57596-paphiopedilum-leaf-spot-help.html What 8 weeks away and scale can do to you office plants http://www.orchidboard.com/community/pests-diseases/57577-what-8-weeks-away-scale-can-do-you-office-plants.html Wed, 07 Mar 2012 16:36:27 GMT Hi all, Well as some of you know my wife and I had a baby in October. Thankfully I got 8 weeks off to help out at home. Thank God!! But anyway,... Hi all,

Well as some of you know my wife and I had a baby in October. Thankfully I got 8 weeks off to help out at home. Thank God!!
But anyway, I have alot of office plants (my entire Masdie collection). Last year I had some success getting many of them to bloom, but this year, being away 8 weeks, and watering only once a week, plus scale insect damage, well lets just say it was a massacre.

Here is the casualty list. I had so many deaths I just wanted to vent a little. Though I am not angry because I was taking care of someone much more important.

Im still fighting the scale on the rest of them, though for some reason my M. princeps, ayabacana, regina, goliath are not affected. Though they grew right next to the ones that died from the infestation.

Add to this list two anthurium species.
Add Masdie. Machu Picchu to the list
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]]> Tindomul http://www.orchidboard.com/community/pests-diseases/57577-what-8-weeks-away-scale-can-do-you-office-plants.html <![CDATA[EEK! Just found brown rot/erwinia on one of my Phals' leaves... :/]]> http://www.orchidboard.com/community/pests-diseases/57549-eek-just-found-brown-rot-erwinia-one-my-phals-leaves.html Tue, 06 Mar 2012 03:23:35 GMT I was checking up on my phals, like I do multiple time throughout the day and everyday, and I couldn't believe it when I seen this brown rot on one of the lower leaves of one of them. What surprised me was how big the spot was. Thankfully, it looks like it started on the outer edge of the leaf and didn't make it to the crown of the plant. I used sterilized cutters to prune the leaf and disinfected the space around it.
I've encountered this problem before, but never with any of my 'chids. I'm pretty sure that I've done a thorough job of cleaning and disinfecting the plant and I've isolated it from my other phals so that it won't spread to any of them. I was just wondering about what causes this to happen? And if anybody else had any suggestions that they'd like to share. I'm also studying up on it right now, but I'd like to hear from others on here too.
I never get any of the leaves wet, splash water on them, or anything like that. Plus, they get excellent air circulation from my ceiling fan too. Like I mentioned earlier, I'm constantly checking on them several times a day everyday, so this brown rot is very recent and boy does it like to spread fast. Hopefully, I caught the problem in time, before it got any worse. So I'm keeping an even closer eye on my 'chids, with my fingers crossed. :nailbite:
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]]> tom_e_boi http://www.orchidboard.com/community/pests-diseases/57549-eek-just-found-brown-rot-erwinia-one-my-phals-leaves.html Erwinia, Fungus, Sunburn or Mineral Damage? http://www.orchidboard.com/community/pests-diseases/57538-erwinia-fungus-sunburn-mineral-damage.html Mon, 05 Mar 2012 18:03:16 GMT Hi all,

I have noticed some brown "rot" along the tips and edges of some of my paph Michael Koopowitz and another hybrid I have. The pictures are below..

Pretty much this edge effect has been on these paphs for months.. I think the newest ones developed last summer. This paph has 1 or 2 edges like this that I know have been on it for 2-3 years now. Usually the tip or edge of the paph starts to get brown.. it's soft at first but after a couple of months it gets kinda hard/crispy.. although sometimes it just stays soft and brown too.

Mind you this plant has had this issue for at least 3 years and otherwise the fans look healthy even the ones with this weird brown edge on them My other paph has even flowered last month! At first I thought it could be Erwinia but doesn't Erwinia wipe out the plant or at least the whole leaf within days or at most within 2 weeks? Can Erwinia just be kept at bay if the plant is pretty much healthy?

The other thing I can think of is that it's some kind of mineral buildup issue since this mainly occurs on the edges and on 1-2 leaves its on the tip. The 2 plants that have this problem are in s/h??

I also have them in a window that receives lots of afternoon light so could this also be sun damage??

Any thoughts would be great.
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]]> orchidjunky http://www.orchidboard.com/community/pests-diseases/57538-erwinia-fungus-sunburn-mineral-damage.html oncidium colmanara wildcat not spiking http://www.orchidboard.com/community/pests-diseases/57528-oncidium-colmanara-wildcat-not-spiking.html Mon, 05 Mar 2012 00:49:07 GMT So I bought an oncidium colmanara wildcat from Lowes about 5 or so months ago. It appears to be in a bark and moss mix in a pot with no ventilation... So I bought an oncidium colmanara wildcat from Lowes about 5 or so months ago. It appears to be in a bark and moss mix in a pot with no ventilation holes. Within a month of bringing it home all of the unopened buds dried up. Also all open blooms dried up and fell off. The spikes on wildcats as I understand it will not produce new flowers like phalanx will, and that too dried up so I cut it down. A new psoudobulb has grown in and I can see new healthy roots also, leaves look very healthy, and the original bulb looks a.bit wrinkled but not too bad. Considering how many months its been, I'm concerned something is wrong as the orchid has not begun to grow a new spike at all. I water when mix feels dry..about once every 10-14 days and gets bright light, I also mist everyday. I feed every other watering. What am I doing wrong here!? Orchid has been dormant for so long! I thought I would have seen new spike/buds by now. Pics coming soon, thanks for any help ]]> mickie09 http://www.orchidboard.com/community/pests-diseases/57528-oncidium-colmanara-wildcat-not-spiking.html Cattleya hybrids with leaves and pseudobulbs drying http://www.orchidboard.com/community/pests-diseases/57453-cattleya-hybrids-leaves-pseudobulbs-drying.html Fri, 02 Mar 2012 17:44:06 GMT Hi For some time me and couple of my friends(members of The Orchid Society of Karnataka, India) are having problems with grown up Cattleya hybrid... Hi
For some time me and couple of my friends(members of The Orchid Society of Karnataka, India) are having problems with grown up Cattleya hybrid plants. The symptom of leaf drying and subsequently spreading to the pseudobulb and then to other pseudobulbs and eventually the whole plant drying. I am posting some pictures. I was wondering whether it is black rot ? Can some body thow light on this with control measures. Thanks
sastry
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]]> sastry http://www.orchidboard.com/community/pests-diseases/57453-cattleya-hybrids-leaves-pseudobulbs-drying.html Mites on Anguloa leads http://www.orchidboard.com/community/pests-diseases/57369-mites-anguloa-leads.html Tue, 28 Feb 2012 16:56:28 GMT I recently acquired two lycastinae (among other orchids), both of which are currently entering their growth phase. Last night, I was both disgusted... I recently acquired two lycastinae (among other orchids), both of which are currently entering their growth phase. Last night, I was both disgusted and horrified to find a plethora of mites swarming all over the three new leads on my Anguloa. When I exposed them to the light to see them better, they scurried into the medium like the little cowards that they are.

Does anyone know how to get rid of these pests? I've heard about the oil and water method, for example, but I wanted to know other ways to kill the mites (and what the big guns are, should things get out of hand). I isolated the plant from its neighbors, none of which appear to have mites (but I'll keep checking each night to see how extensive the infestation is). I want to stop this invasion as quickly as I can. :( ]]> Angurek http://www.orchidboard.com/community/pests-diseases/57369-mites-anguloa-leads.html Phal with crown rot..I think http://www.orchidboard.com/community/pests-diseases/57303-phal-crown-rot-i-think.html Sun, 26 Feb 2012 11:15:45 GMT Hi guys One of my friends was given a beautiful phal as a moving in present, she had no idea how to take care of it so I gave her a mini class... Hi guys

One of my friends was given a beautiful phal as a moving in present, she had no idea how to take care of it so I gave her a mini class yesterday on the basics. On inspecting the plant iIbelieve it has crown rot, I was able to pull of 2 leaves with no trouble at all and what was left was really mushy and soft :( it looks as if its moving its way down leave by leave. I have never dealt with crown rot before so I have no idea what to do. Is there a quick, easy and cheap way to deal with this so I can try and persuade my friend to help it and not just throw it away.

Any tips/help would be appreciated :) ]]> Asher http://www.orchidboard.com/community/pests-diseases/57303-phal-crown-rot-i-think.html HELP - Phalaenopsis petals are curling http://www.orchidboard.com/community/pests-diseases/57253-help-phalaenopsis-petals-curling.html Fri, 24 Feb 2012 04:02:47 GMT I bought two phalaenopsis plants at Home Depot five days ago. The petals on one of the plants began to curl inwards the day after I brought it home.... I bought two phalaenopsis plants at Home Depot five days ago. The petals on one of the plants began to curl inwards the day after I brought it home. Since bringing it home, one of the buds has opened up, but the petals look like they are starting to curl. The second plant looked fine until yesterday, when its petals also began to curl.

The leaves on both plants look a little bit dark, but they're getting lighter since I've brought them home.

My apartment is pretty dry, but I have them both on humidity trays and am spraying them several times a day with a spray bottle. The temperature during the day is around 80 degrees; at night, it is around 68 degrees. I have them both in indirect sunlight at windows.

I did some research, and thought that it might have had something to do with air conditioning blowing on the flowers. I've moved them out of direct range of the air flow, and the petals are continuing to curl.

Does anyone have any idea what could be causing the petals to curl and how I can stop it? I really appreciate any insights you might have.

Pictures are here. ]]> orchidboard111 http://www.orchidboard.com/community/pests-diseases/57253-help-phalaenopsis-petals-curling.html UV light to kill bugs http://www.orchidboard.com/community/pests-diseases/57246-uv-light-kill-bugs.html Thu, 23 Feb 2012 15:42:05 GMT I saw somewhere that you could use a UV light wand to kill bugs (mites). Anyone heard of this or tried it before? I saw somewhere that you could use a UV light wand to kill bugs (mites).
Anyone heard of this or tried it before? ]]> jcaballero http://www.orchidboard.com/community/pests-diseases/57246-uv-light-kill-bugs.html Phalaenopsis mystery disease http://www.orchidboard.com/community/pests-diseases/57169-phalaenopsis-mystery-disease.html Mon, 20 Feb 2012 20:51:04 GMT Hi. Sorry for new thread and poor english. I must write here, after many hours which I spent with google. I am from Czech Republic, small... Hi. Sorry for new thread and poor english. I must write here, after many hours which I spent with google.
I am from Czech Republic, small windowsill grower, but no matter how big is your collection, because diseases are problem for all. Growers shares in discussions many photos, which shows the same symptoms:
[My World of Orchids: Tawain Orchid Virus or Microfungus??
Phalaenopsis virus?

phal infestation needs your help

http://www.orchidboard.com/community...-clearing.html

Phalaenopis stuariana - old leaf | Flickr - Photo Sharing!

Phalaenopsis no ID | Flickr - Photo Sharing!

Phalaenopsis: Helle Flecken auf den Blättern - OrchideenFreunde.eu

Phalaenopsis - unbekannte Krankheit, ungewisser Ausgang

Welche Art von Blattschaden/ Krankheit?

My plants:
Phalaenopsis schilleriana

Imageshack - phal1.jpg

The same schilleriana with brown spots on flowers, after flower buds damage by disease.

Imageshack - phal2.jpg

Imageshack - phal3i.jpg

Imageshack - phal4.jpg

Hybrid

Imageshack - phal6.jpg

Aerangis luteoalba

Imageshack - aerangis1.jpg

Trichocentrum tigrinum

Imageshack - trichocentrum1.jpg

Dendrobium phalaenopsis hybrid

Imageshack - dendrobium1.jpg

Firstly, it is no sunburn, no cold water, no colonies of spider mites.
What is it? Maybe viral infection, maybe bacteriose or unknown fungi?
Viral infections are big problem, watch here:
http://www.icogo.org/images/Dr._Chin...id_Viruses.pdf
This website determines these symptoms like viral:
Orchids from Green Drop Home - Orchids : Diseases and pests : Viral diseases. - orchids, rare plants, fertilizer, materials and equipment, all for hydroponics - Delivery of plants all over the world.

Is it really CymMV or ORV or their mixed infection?
I thought, that viroses are transportet mainly by insects or cutting tools, but these disease was spread on many plants in my collection in short time....... i don't know how! I hawe grown healthy plants for 15 years, without any spots.
I know typical viruses, like CymMV on cymbidium, phalaenopsisech, creates rather color changes, than cell colapse.
Is these disease anything new in our collections?
It look for me, very infectious and problematic!
Anybody could unravel the mystery.

Thank you, Karel Hajda. ]]> Karlos http://www.orchidboard.com/community/pests-diseases/57169-phalaenopsis-mystery-disease.html White Furry insect http://www.orchidboard.com/community/pests-diseases/57128-white-furry-insect.html Sun, 19 Feb 2012 16:20:19 GMT Ok, so this morning after the last bud opened on my new guy, I noticed it was a little fuzzy. I was pretty confused so I went to pull it off and it... Ok, so this morning after the last bud opened on my new guy, I noticed it was a little fuzzy. I was pretty confused so I went to pull it off and it came right off. Then, I noticed it had legs. It was maybe an 1/8" of long, white and fuzzy.

Of course I went here but didnt find out anything about it but did find some info on the net about it being Boisduval scale. Yet, I cant find anymore of it on any plant and specifically on this one there is nothing.

Am Im about to start a war against this bug?

EDIT:

NVM, confirmed it as a mealy. Crap. ]]> bballr4567 http://www.orchidboard.com/community/pests-diseases/57128-white-furry-insect.html <![CDATA[Phal leaves suddenly turning yellow & spongy]]> http://www.orchidboard.com/community/pests-diseases/57105-phal-leaves-suddenly-turning-yellow-spongy.html Sat, 18 Feb 2012 20:10:53 GMT I received a beautiful kaleidoscope phal in bloom from Mom a week ago. Had a small sunburn patch on one of the lower leaves -- not a big deal,... I received a beautiful kaleidoscope phal in bloom from Mom a week ago. Had a small sunburn patch on one of the lower leaves -- not a big deal, however, I'm alarmed at the sudden softening & yellowing of the 2 newest leaves which up until a week ago had been firm and green. The situation is changing fast -- last week the plant seemed OK and now I'm afraid it is terminally ill :((

Hoping someone can tell me what's the problem and if there's anything that can be done. Or how to avoid this happening to other chids in the family. (already isolated this one to avoid spreading diseases)

potted in bark with lots of air circulation
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]]> goulstone http://www.orchidboard.com/community/pests-diseases/57105-phal-leaves-suddenly-turning-yellow-spongy.html Bad winter: leaf spot (bacterium. fungus) or virus? http://www.orchidboard.com/community/pests-diseases/57095-bad-winter-leaf-spot-bacterium-fungus-virus.html Sat, 18 Feb 2012 12:47:11 GMT This is the third item in the "Bad winter issue series". I am hoping that maybe somebody can help me identify what it is.

Quote:
I have had a terrible winter in my greenhouse. I was not around much (travelling 3 weeks out of the month for work) for nearly 5 months now and having other people looking after the greenhouse. I often only had a day in between trips and just enough time to wash clothes.

As a consequence I now have a mixture of diseases as well as maybe cultural issues.
Now this one is entirely my fault. I got a huge specimem Stanhopea from my mother as a present in late summer. It had a few of the spots in question. Wasn't vigilant: cut off the leaves and thought this was it. A few weeks later: actually in October within a period of two weeks, I had similar spots appearing on many plants: Stanhopeas, Coelogyne, some fleshy Angraecum, Catasinae, some Lycaste. I sprayed twice with fungicide and the spread of the spots stopped. So I thought this was it. However the spots seem to affect the plants: on the huge specimem Stanhopea, all the pseudobulbs shrivelled. I removed the papyrus from around the bulbs and noticed that similar spots are on the pseudobulbs.

I looked at various sources and it is not really clear to me what this is and how worried I should be. Doesn't quite look like Cercospora, Guignardia or the other fungal leaf spot diseases. It also doesn't look quite like a bacterial leaf spot. The spots look different on different species, but all appeared within the same two weeks
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]]> Lars Kurth http://www.orchidboard.com/community/pests-diseases/57095-bad-winter-leaf-spot-bacterium-fungus-virus.html Bad winter: Bacterial Issue? http://www.orchidboard.com/community/pests-diseases/57094-bad-winter-bacterial-issue.html Sat, 18 Feb 2012 12:24:54 GMT This is the second item in the "Bad winter issue series". I am hoping that maybe somebody can help me identify what it is.

Quote:
I have had a terrible winter in my greenhouse. I was not around much (travelling 3 weeks out of the month for work) for nearly 5 months now and having other people looking after the greenhouse. I often only had a day in between trips and just enough time to wash clothes.

As a consequence I now have a mixture of diseases as well as maybe cultural issues.
This disease seems to ONLY affect soft tissued and leafed plants, such as Gongora & friends, new growth of Stanhopea, new growth of Dendrochilum, new growth of soft Coelogyne (e.g. Coelogyne payishii), Ornithocephalus. It is VERY fast.

The disease always starts from the tip of leaves on new shoots, which become yellow on the leaf tip. The yellow moves rapidly down the vains, and the tissue dries behind. Sometimes you can see a slight blue sheen on the dried tissue. When the yellow has wandered to the pseudobulb, it becomes yellow, then brown and mushy. When you prick the skin liquid goo comes out. It does not smell. The speed of the disease implies something bacterial. Cutting off the affected leaves before a pseudobulb is affected seems to save the plant (or at least slow the disease), but it can come back. Sometimes watery blisters on leaves.

This has been the biggest issue for me while I was away, as it moves so fast. I had no indication of any issues when I left for a 2 week trip in January: when I got back, many plants were mush.

See attached pictures of early stages, which I have taken over time.
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]]> Lars Kurth http://www.orchidboard.com/community/pests-diseases/57094-bad-winter-bacterial-issue.html Bad winter: Sudden root loss http://www.orchidboard.com/community/pests-diseases/57093-bad-winter-sudden-root-loss.html Sat, 18 Feb 2012 12:05:03 GMT I have had a terrible winter in my greenhouse. I was not around much (travelling 3 weeks out of the month for work) for nearly 5 months now and... I have had a terrible winter in my greenhouse. I was not around much (travelling 3 weeks out of the month for work) for nearly 5 months now and having other people looking after the greenhouse. I often only had a day in between trips and just enough time to wash clothes.

As a consequence I now have a mixture of diseases as well as maybe cultural issues.

This one may be cultural as my greenhouse was not watered for 7 days during a cold spell and it really dried out, but could possibly also be a disease like Fusarium. The picture is a Barkeria. It had big fat roots before I left, a week later they were totally dried and shrivelled. A plant nearby (an Angraecum) had similar symptoms, followed by dropping most of its leaves subsequently (which is a sign of the root system not being able to sustain the leaves).

I have had two weeks at home and treated with various fungicides and for now there are no new cases, BUT I will be gone for three weeks again.
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]]> Lars Kurth http://www.orchidboard.com/community/pests-diseases/57093-bad-winter-sudden-root-loss.html <![CDATA[Brown/tan band on Paphiopedilum callosum's developing leaf]]> http://www.orchidboard.com/community/pests-diseases/57044-brown-tan-band-paphiopedilum-callosums-developing-leaf.html Thu, 16 Feb 2012 22:53:08 GMT Hello, Since the past Fall,i am growing a Paphiopedilum callosum. It was growing very well and the leaf it had half grown when it arrived,grew... Hello,

Since the past Fall,i am growing a Paphiopedilum callosum. It was growing very well and the leaf it had half grown when it arrived,grew fine and at a good pace. The a new leaf started developing and at some point,as it was growing out,a solid redish-brown area started revealing itself. It appeared almost like healthy tissue and(after panicking a few days)i thought the problem was over as it was continuing to grow the new leaf fine. Its still(or at least i am sure it was till a few days ago,cant be sure now)growing the new leaf and the new leaf,even the brown area of it,is tough and like healthy tissue,not soft or anything,and the tough leaf epidermis is continuous and not any different on the brown area. I was waiting for the band to finally end and healhty tissue be revealed but still nothing. That didnt worry me too much but today,i noticed the brown spread a bit upwards on the right half of the leaf and that got me really worried.
I have no idea what might have caused this redish-brown area. I think i may have been overwatering it but when i noticed the brown area,i immediately cut down on watering and even left it dry out a couple of time,something i think isnt ideal though either. I noticed the damage spread today,in a period inbetween the waterings and it had a week or more without water and was almost completely dry today before watering it. Its growing by a windowsil receiving reasonable light even with the cloud cover we have been having for a month now. Below the windowsil is a heating element which provides warm and dry but not overly hot, passive air circulation. It doesnt seem negatively effected from lack of humidity and its probably kept more humid from the tray its growing it and the cool of the window and windowsil its sitting on,although insulated by bubble wrap to minimize the cooling.

Here are some pictures:






Why did it got this brown area,what is it caused by and what can i do for it?

Thank you very much in advance!:( ]]> Kostas http://www.orchidboard.com/community/pests-diseases/57044-brown-tan-band-paphiopedilum-callosums-developing-leaf.html Worried about virus in collection! http://www.orchidboard.com/community/pests-diseases/57040-worried-about-virus-collection.html Thu, 16 Feb 2012 19:45:15 GMT Hello Fellow Orchid Friends,

I'm a wee bit worried about my beloved plants. I want to see what others think is going on in these pictures. Each picture is a individual orchid. I'm scared they have some virus, or multiple. I know, jumping to assumptions is bad, but, certain ones were fine then started to get the dreaded "signs" on healthy leaves. I know there could be various things wrong such as bacteria, fungus, water, light, pests...so on. An experienced eye and general direction and I will be forever grateful! Still learning only after three years.

Picture 1: Peristeria elata (got it super healthy from Kawamoto Orchids last May, leaves got a pitting..not sure if that is is common in species, growing in S/H)
Picture 2: Cattleya seedling (bought it like this, and just picked it and two new growths that appeared healthy just fell off! :( )
Picture 3: Oncidium Sharry Baby
Picture 4: Dendrobium Spectabile (Got it to spike, yay!)
Picture 5: Bllra. Diana Dawn "Mt. Pisgah"
Picture 6: Encyclia cochleatum x Encyclia lancifolium. (aka green hornet)
Picture
Picture 7, 8,9: Den. Kingianum (just got that the other day, grower said leaves looked like that because it is so crowded, just want to make sure because better judgement said not to buy it)
Picture 10: Neo hybrid (rainbow)



What do you guys think? please.gif Thank you SO much. (I have several plants I'm concerned with as well, but these are the mains).
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]]> Pelepel http://www.orchidboard.com/community/pests-diseases/57040-worried-about-virus-collection.html my sad little plant not blooming, growing, roots and leaves look bad help!!! http://www.orchidboard.com/community/pests-diseases/56995-my-sad-little-plant-not-blooming-growing-roots-leaves-look-bad-help.html Wed, 15 Feb 2012 05:15:21 GMT :((My Paph. Shireen is looking a little sad. it's been having trouble growing and hasn't had any new stems or leaves show up. the roots are shown below...brown no green...it is in miracle-gro orchid potting mix. this is the only surivor from my aunt's house which mysteriously killed my 19 other orchids....it's been out of her home for over 6 months now...they leaves look a lot better then before they were very lined and wilted looking....how can i bring this beautiful orchid back to health?????







]]> lunaraven87 http://www.orchidboard.com/community/pests-diseases/56995-my-sad-little-plant-not-blooming-growing-roots-leaves-look-bad-help.html My poor baby! http://www.orchidboard.com/community/pests-diseases/56966-my-poor-baby.html Tue, 14 Feb 2012 15:57:55 GMT I'm so sad. Around 6 months ago my boyfriend bought me my first Phal and I loved it. I researched (on this site) how to properly take care of it and it was doing wonderfully. That is, until my boyfriend knocked it over and broke the spike completely off. I was upset, but I was determined to put the time into get it to re-spike. About a month a go I got a new spike (it's now 8 inches) and it actually sprouted something else off of the side of the stem (another spike?). Unfortunately, we just moved across the country and one by one, the leaves on my phal started falling off. I wasn't overwatering, but I think the humidity/elevations/temperature changes etc, caused it to have a bad reaction. I am devastated, because it was so close to re-blooming, finally! Is there anything I can do to save my poor little baby??? Please help! ]]> uhsomethingsimple http://www.orchidboard.com/community/pests-diseases/56966-my-poor-baby.html OxiDate RTU http://www.orchidboard.com/community/pests-diseases/56946-oxidate-rtu.html Mon, 13 Feb 2012 19:59:13 GMT For folks interested in use the stabilized hydrogen peroxide product Zero-Tol, but did want the hose-end sprayer application, I've now started stocking (AKA, finally found a stocking distributor) OxiDate Ready-To-Use quart spray bottles.

Same final chemistry as Zero-Tol, and is a disinfectant, bactericide, fungicide, mildewcide, and algaecide.

]]> Ray http://www.orchidboard.com/community/pests-diseases/56946-oxidate-rtu.html Masdevallia trouble? http://www.orchidboard.com/community/pests-diseases/56870-masdevallia-trouble.html Fri, 10 Feb 2012 00:09:25 GMT I have 2 masdies that I grow in S/H. They've been in this for several months now, although I purchased them in the usual potting medium, from a reputable nursery. They are under lighting with my other orchids, phals and oncidiums, on a heat mat with a fan for circulation, and a humidifier. All my other orchids are doing great. New root growth, spikes, etc. But my masdies are a puzzle. :_One is continously losing leaves, although it also constantly sends up new growth. The other is just there. No new growth, but it looks nice and green, never losing a leaf, but never growing any either.:hmm As I said, the light is good enough to make all the other plants really happy-but what is going on with my masdies?:_(:scratchhead::roll: ]]> greenpassion http://www.orchidboard.com/community/pests-diseases/56870-masdevallia-trouble.html How to get rid of flying insect pests... http://www.orchidboard.com/community/pests-diseases/56861-how-get-rid-flying-insect-pests.html Thu, 09 Feb 2012 17:37:49 GMT This is the best control for flying insect pests that I found... Using sticky traps! I use the specific one called Safer Brand Houseplant Stick... This is the best control for flying insect pests that I found...
Using sticky traps! I use the specific one called Safer Brand Houseplant Stick Stakes. They control whitefly, blackfly, thrips, fungus gnats, fruit flies, midges, and most other flying insects. You can usually buy this specific trap at Earl May or at: Amazon.com: House Plant Sticky Stake 7 Pack: Patio, Lawn & Garden
I've used them and they work very well. I keep a few sticky stakes around my plants continuously.
Let me know if these work for you... ]]> The Orchid Boy http://www.orchidboard.com/community/pests-diseases/56861-how-get-rid-flying-insect-pests.html Small Black Insects http://www.orchidboard.com/community/pests-diseases/56820-small-black-insects.html Tue, 07 Feb 2012 19:41:11 GMT When looking for snails a few minutes ago I saw small insects on the roots of my Mystacidium capense. At first I thought these to be eggs of some... When looking for snails a few minutes ago I saw small insects on the roots of my Mystacidium capense. At first I thought these to be eggs of some sort, but when I had a closer look I discovered that these eggs move.

These little insects are about, or not even 1/2 mm in size and I only saw them on the roots. They are black in colour and shiny in the light.

I have not been able to spot them on any other plant.

If I know what they are I may check to see whether they can do any harm. This is the first time ever that I have seen something like this.

Any comments? ]]> Faan http://www.orchidboard.com/community/pests-diseases/56820-small-black-insects.html Hygrozyme - Orchid Champion http://www.orchidboard.com/community/pests-diseases/56762-hygrozyme-orchid-champion.html Sun, 05 Feb 2012 19:34:03 GMT Does anyone have info on these products.... I'm thinking of using it as a "all natural" fungicide. ]]> keithrs http://www.orchidboard.com/community/pests-diseases/56762-hygrozyme-orchid-champion.html Is this black rot on my Psychopsis Mariposa? http://www.orchidboard.com/community/pests-diseases/56697-black-rot-my-psychopsis-mariposa.html Fri, 03 Feb 2012 13:43:47 GMT I have a Psy. Mariposa GV and it came with a 10 inch spike. I have managed to get it to grow about another four inches since I have had it. I have... I have a Psy. Mariposa GV and it came with a 10 inch spike. I have managed to get it to grow about another four inches since I have had it. I have just noticed that it has developed a nasty black mark around the base of the spike and this is spreading. :shock: Please give it to me straight, is this rot???:scratchhead:





]]> Susie11 http://www.orchidboard.com/community/pests-diseases/56697-black-rot-my-psychopsis-mariposa.html Black fungus? http://www.orchidboard.com/community/pests-diseases/56695-black-fungus.html Fri, 03 Feb 2012 05:28:52 GMT Can anyone identify this 'stuff', whatever it is. It's taken over the top of this moss, but it's isolated so far to this single pot. Dont know what it is, just need to know if I should do more than a quick repot and physan treatment. Thoughts?
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]]> zxyqu http://www.orchidboard.com/community/pests-diseases/56695-black-fungus.html Watering and delivering insecticide at the same time? http://www.orchidboard.com/community/pests-diseases/56691-watering-delivering-insecticide-same-time.html Fri, 03 Feb 2012 00:15:35 GMT I have reviewed a lot of the threads about insecticides and I have decided to give Merit a try. My understanding is that it is sprayed on the... I have reviewed a lot of the threads about insecticides and I have decided to give Merit a try. My understanding is that it is sprayed on the insects, but also should be delivered to the planting medium to be taken up by the plant as a systemic. I would like to use my Dosatron to deliver the Merit when I water with no fertilizer. What amount of Merit do I add to plain water in the concentrate bucket to achieve the correct dosage? Do I measure it with by dissolved salt meter to achieve a certain parts per million? Can any chemists give me some help? It's my last hope to get rid of these mealy bugs. Thanks for any help. ]]> Ashby Chadburn http://www.orchidboard.com/community/pests-diseases/56691-watering-delivering-insecticide-same-time.html tiny black spots on back of phal leaf http://www.orchidboard.com/community/pests-diseases/56677-tiny-black-spots-back-phal-leaf.html Thu, 02 Feb 2012 02:25:10 GMT I noticed these black spots a couple weeks ago. I know, it's bad that I'm just now looking into it, but on the bright side it hasn't appeared to get any worse. The plant appears to be perfectly healthy otherwise; the roots are fine along with the rest of the leaves, and it has a few buds on it. I couldn't find pictures online that really looked a whole lot like this, so I'm not really sure what it is. Any advice on what's wrong/what I can do to fix it is appreciated. =)
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]]> aramina12 http://www.orchidboard.com/community/pests-diseases/56677-tiny-black-spots-back-phal-leaf.html What is this??? Phalaenopsis leaf damage http://www.orchidboard.com/community/pests-diseases/56673-what-phalaenopsis-leaf-damage.html Wed, 01 Feb 2012 23:20:55 GMT When watering one of my phals this morning, I noticed some strange spots on the underside of one of the leaves, then when I lifted up the leaf under... When watering one of my phals this morning, I noticed some strange spots on the underside of one of the leaves, then when I lifted up the leaf under it, it was just COVERED in it. I don't know how I haven't noticed this before, but it was on the end of my shelf and the only plant next to it is an oncidium that isn't showing any sign of trouble. Those two leaves are the only ones affected. I have isolated the plant, but it's really freaking me out. What could this be? And should I be worried about all my orchids??
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]]> rachel.gazelles http://www.orchidboard.com/community/pests-diseases/56673-what-phalaenopsis-leaf-damage.html Can I use Bugitol in the greenhouse? http://www.orchidboard.com/community/pests-diseases/56664-can-i-use-bugitol-greenhouse.html Wed, 01 Feb 2012 17:09:08 GMT I have a major mealy bug infestation. I have used Neem Oil, Sucrashield, and Cryptolaemus montrouzieri(little beattles that eat mealy bugs) and I... I have a major mealy bug infestation. I have used Neem Oil, Sucrashield, and Cryptolaemus montrouzieri(little beattles that eat mealy bugs) and I still have mealy bugs everywhere. I have read about a new insecticide called Bugitol that is made from an extract of chilies. Does anyone have experience with Bugitol? Do I have to wear a hazmat suit and a respirator? Help, I am being eaten alive by mealy bugs. Thanks all. ]]> Ashby Chadburn http://www.orchidboard.com/community/pests-diseases/56664-can-i-use-bugitol-greenhouse.html Immortal Mealy Bugs!!! http://www.orchidboard.com/community/pests-diseases/56637-immortal-mealy-bugs.html Tue, 31 Jan 2012 16:11:30 GMT Seriously I have NO IDEA what else to try. They are spreading and I have lost 4 orchids since christmas. Come on people, what ACTUALLY works to... Seriously I have NO IDEA what else to try. They are spreading and I have lost 4 orchids since christmas.

Come on people, what ACTUALLY works to kill the fluffy little b*****ds?!:tombstone: ]]> Starla http://www.orchidboard.com/community/pests-diseases/56637-immortal-mealy-bugs.html Fungus Gnats- bounce them ! http://www.orchidboard.com/community/pests-diseases/56605-fungus-gnats-bounce-them.html Mon, 30 Jan 2012 18:28:08 GMT found this tip, haven't tried it

Gnats No More. Fabric softener sheets not only repel static cling but pests. A joint study last year by Kansas State University and University of Illinois found out that fabric softener sheets repel gnats. Fabric softener contains chemicals that prevent gnat larva from wreaking havoc on indoor and greenhouse potted plants.

https://sharepoint.cahnrs.wsu.edu/bl...ng-sheet-.aspx ]]> orchidsarefun http://www.orchidboard.com/community/pests-diseases/56605-fungus-gnats-bounce-them.html Browning stems on Paphiopedilum-please help :( http://www.orchidboard.com/community/pests-diseases/56560-browning-stems-paphiopedilum-please-help.html Sun, 29 Jan 2012 09:00:21 GMT In August or September I bought from our local store,a healthy and pretty blooming Paph. By that time there were 2 mature plants and a little baby... In August or September I bought from our local store,a healthy and pretty blooming Paph.
By that time there were 2 mature plants and a little baby growing.
After the flowers wilted everything seemed to be fine but at the end of November one of the mature plant appeared to be mushy at the bottom and reddish brown...
I thought it happend because I had accidentally watered the crown...but after another 2 months I've just noticed that the little baby plant is brownish all of the sudden!!!
Everything had happened over the night,yesterday looked fine but next morning was dying...very frustating!!

What should I do next to save the last mature plant(mother)???

Thank you for all your help,
Floare Exotica
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]]> Floare_Exotica http://www.orchidboard.com/community/pests-diseases/56560-browning-stems-paphiopedilum-please-help.html What is on my phal orchid leaf? http://www.orchidboard.com/community/pests-diseases/56539-what-my-phal-orchid-leaf.html Sat, 28 Jan 2012 20:39:28 GMT Hello, I just got this phal for a gift... And it has some kind of infection on the leaf... Dark hard spots.. I wonder if I should remove the leaf so... Hello, I just got this phal for a gift... And it has some kind of infection on the leaf... Dark hard spots.. I wonder if I should remove the leaf so it won't spread? Any advice?

https://plus.google.com/photos/11414...OaBs83psOye6gE


Thank you, Jenn ]]> jmain3 http://www.orchidboard.com/community/pests-diseases/56539-what-my-phal-orchid-leaf.html Mite killer ??? http://www.orchidboard.com/community/pests-diseases/56483-mite-killer.html Fri, 27 Jan 2012 15:48:25 GMT Does anyone knows if thiacloprid is effective against spider mites ? I am asking because all the Miticides suggested earlier on like Tetrasan are... Does anyone knows if thiacloprid is effective against spider mites ?

I am asking because all the Miticides suggested earlier on like Tetrasan are not available here in Singapore.

Just found another two phals infected by these little creepy crawlies.......

Would also appreciate if anyone could point me to a online site that offers Tetrasan and 'do' international orders.

Thank you. ]]> Mervin http://www.orchidboard.com/community/pests-diseases/56483-mite-killer.html Triple threat- mealies, aphids and scale http://www.orchidboard.com/community/pests-diseases/56476-triple-threat-mealies-aphids-scale.html Fri, 27 Jan 2012 02:27:38 GMT I had a lovely vacation during which a friend took care of my orchids. When I finally caught up at work and had time to look carefully, I found all 3... I had a lovely vacation during which a friend took care of my orchids. When I finally caught up at work and had time to look carefully, I found all 3 pests in various combinations on my orchids. :((
So far I've carefully inspected and treated the ones in bud or bloom and isolated them.
My question is whether there is one product that will work on all three of these nasties?
I've applied isopropyl alcohol carefully to the worst areas of mealies; Safers soap to the aphids and a pyrethrin spray for the ones with scale. Could I get away with the pyrethrin spray alone?
It's amazing how fast (about 3 weeks) this got out of hand! ]]> Connie Star http://www.orchidboard.com/community/pests-diseases/56476-triple-threat-mealies-aphids-scale.html New Dendrobium virused? http://www.orchidboard.com/community/pests-diseases/56475-new-dendrobium-virused.html Fri, 27 Jan 2012 01:36:53 GMT :hello :bowing Went to the local orchid greenhouse and purchased a lovely new Dendrobium Burana White. At least I thought it was lovely...the... :hello :bowing

Went to the local orchid greenhouse and purchased a lovely new Dendrobium Burana White. At least I thought it was lovely...the longer I've had it home I've been really examining it leaf by leaf and am concerned about a particular leaf that may be virused.

While going through an older book of mine "Home Orchid Growing by Rebecca Northern I came upon a black and white picture of a cattleya leaf afflicted by odontoglossum ring virus. And it looks like the leaf on this new orchid!

I'm worried. :_( It's possible the leaf is just aging but I can't be sure. I'd really appreciate everyone's opinions and input.

The plant is at least 18 inches tall, has 5 canes with a large spike of 8 buds.

The pictures are taken to show the color changes and how blotchy the leaves look close up. In the greenhouse it was difficult to see the gradations in color. I really want this plant to be well!

Cheers!
Neo
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]]> NeoOrchid http://www.orchidboard.com/community/pests-diseases/56475-new-dendrobium-virused.html The War Against Scale (Week 2) http://www.orchidboard.com/community/pests-diseases/56451-war-against-scale-week-2-a.html Wed, 25 Jan 2012 14:57:51 GMT This weekend marked my 2nd malathion attack against the scales attempting to invade my orchid collection. I'm currently planning a 3rd assault this following weekend, followed by enhanced vigilance. :)

Thank you, Ray and others, for your advice following my initial dosing. Ray, the addition of a little dish soap did, indeed, keep things in suspension nicely.

As you might guess from my various questions, I'm kind of a noob to using pesticides on my plants. As a biologist (with a chem minor) I'm not a noob to handling noxious chemicals or pathogenic organisms, however, so am good about all the necessary gloves / ventilation / disposal stuff. It's more the application / interactions with the orchids themselves I'm not always sure about.

So this week's questions are:

1) I've been doing the malathion as a bucket dip because I don't have anywhere I feel safe spraying during the winter. When using it as a dip, do I just dunk in and take out? Or should I leave the plant in the dip for a few minutes? So far, I've just done the dunk, and it seems to have worked fine (no sign of bugs at all during this last treatment).

2) Before dunking, I've been giving each of the orchids a soak in clean water to let all the roots turn green. My theory is that they don't need to be absorbing malathion, so saturating the roots before dipping will minimize unnecessary chemical absorption. Does that make sense?

3) Fertilizing. While doing the malathion treatments, I haven't been fertilizing. I figure the plants can handle three weeks without fertilizer, and I wasn't sure if the malathion and fertilizers played nice together. Is that an unnecessary worry? In general, do people mix fertilizers and malathion in the same water? In other words, could I be dipping for pests and fertilizing at the same time?

Thanks again, everybody! Orchidboard is the best. :waving

L.P. ]]> lycaonpictus http://www.orchidboard.com/community/pests-diseases/56451-war-against-scale-week-2-a.html Neem oil uses http://www.orchidboard.com/community/pests-diseases/56413-neem-oil-uses.html Mon, 23 Jan 2012 20:16:06 GMT Can you help with the use of Neem Oil in controlling mealy bugs? Is the oil just a leaf polish or does it have insect killing uses also? I mixed... Can you help with the use of Neem Oil in controlling mealy bugs? Is the oil just a leaf polish or does it have insect killing uses also? I mixed one quart water with 1 and 1/2 tsp. oil and 1/2 tsp. liquid soap. Sprayed over and under leaves. Don't have a big infestation but it is annoying. My collection is little of this, little of that. Thanks. ]]> Zoey http://www.orchidboard.com/community/pests-diseases/56413-neem-oil-uses.html Dying Cymbidium-Help!!! http://www.orchidboard.com/community/pests-diseases/56396-dying-cymbidium-help.html Mon, 23 Jan 2012 01:23:19 GMT I think the 3-4 pseudobulbs on my cymbidium are rotting and leaves on them turn black at the base and fall off! it only has 4 pseudobulbs and I think... I think the 3-4 pseudobulbs on my cymbidium are rotting and leaves on them turn black at the base and fall off! it only has 4 pseudobulbs and I think they all are rotting except the tiny new growth. I've included pictures. I'm new to this forum and I've had this plant for a couple months. I water it once a week and it sits near a running fan and is in a humidity tray. It was bought in extremely mushy decomposed material and i had to repot it and cut off 3/4 of the roots&i sprinkled them with cinnamon. I don't want to lose this magnificent plant! HELP!

/Users/smooche6/Desktop/IMG_0708.JPG, /Users/smooche6/Desktop/IMG_0704.jpg, /Users/smooche6/Desktop/IMG_0705.jpg ]]> smooche6 http://www.orchidboard.com/community/pests-diseases/56396-dying-cymbidium-help.html What is this under leaves? http://www.orchidboard.com/community/pests-diseases/56361-what-under-leaves.html Sat, 21 Jan 2012 19:48:31 GMT It's only on this, milt. Fitch. And only on a few leaves. Is it a virus or pest? What should I do? I've isolated it. ]]> Paul Mc http://www.orchidboard.com/community/pests-diseases/56361-what-under-leaves.html <![CDATA[What's wrong with the leaves???]]> http://www.orchidboard.com/community/pests-diseases/56358-whats-wrong-leaves.html Sat, 21 Jan 2012 18:47:07 GMT Hey guys, I would take a picture but it's so tiny I don't think it would show in a pic. I think I've seen this before, but I can't remember if it progressed to something worse or if it just went away. Basically I have a large Phal, a Bc and a couple of Vandas with teeny tiny pin hole indentations on the top surface of ALL the leaves. I looked at the tops and bottoms of the leaves of each plant with a jeweler's loupe, and could not find any bugs. Under the loupe the tops of the leaves look a tad wrinkly/leathery. I know they don't have root rot, and I water them daily except for the Phal, which is potted. The Vandas are bare root with some Spanish moss and the Bc is mounted on tree fern, and is well established with roots everywhere. Please HELP!!!!!!!!!!!!!! ]]> Gage http://www.orchidboard.com/community/pests-diseases/56358-whats-wrong-leaves.html Phal with riddled leaves http://www.orchidboard.com/community/pests-diseases/56337-phal-riddled-leaves.html Fri, 20 Jan 2012 22:24:17 GMT I have a favorite and expensive phalaenopsis (fragrant Yellow) that came from a vendor with the underside of the leaves with a riddling of rust red... I have a favorite and expensive phalaenopsis (fragrant Yellow) that came from a vendor with the underside of the leaves with a riddling of rust red and now areas turning white. I thought it might have been from some kind of spider? I do not see any evidence of 'live' insects even with a magnifying glass. Perhaps they are no longer alive but this has done a lot of harm on the leaves. Or can someone tell me what made these imperfections and am I in danger of losing this plant? I am not very happy with this vendor and also sending miss-taged plants on several occasions

]]> phragman http://www.orchidboard.com/community/pests-diseases/56337-phal-riddled-leaves.html <![CDATA[Malathion & R.O. Water]]> http://www.orchidboard.com/community/pests-diseases/56170-malathion-r-o-water.html Mon, 16 Jan 2012 01:54:45 GMT So I used malathion today for the first time (thank you, brown soft scale). Because I always use R.O. water with my tolumnia, I mixed up the... So I used malathion today for the first time (thank you, brown soft scale). Because I always use R.O. water with my tolumnia, I mixed up the malathion (liquid) at the recommended dilution in R.O. water. I immediately had white globules dispersed through the water -- like fat, or oil. I went ahead and used the mixture, agitating frequently to keep whatever that was (the carrier?) in suspension. But I'm wondering -- is that normal behavior for malathion? Or is this something to do with using it in R.O. water? Should I use tap water instead next time?

Thanks in advance!

L.P.

Sent from my DROID3 using Tapatalk ]]> lycaonpictus http://www.orchidboard.com/community/pests-diseases/56170-malathion-r-o-water.html Help please... think nearly all my orchids have spider mites. http://www.orchidboard.com/community/pests-diseases/56155-help-please-think-nearly-all-my-orchids-have-spider-mites.html Sun, 15 Jan 2012 14:00:06 GMT The bottom of the leaves on most of my orchids have a dusty looking residue, with spots of reddish dust. Some of the leaves have started to go... The bottom of the leaves on most of my orchids have a dusty looking residue, with spots of reddish dust. Some of the leaves have started to go yellow and few have already dropped off. :(
Never had a problem with my orchids before so didn't realise things had started to go wrong till nearly all the orchids were involved (mainly phals and dens). :shock:
Anyone know what I can use to get rid of the mites, anything I'd have in the house or could buy in a local garden store (in the UK)..?
My orchids all sit on my front windowsill, with radiators underneath (the only place light enough to let them grow well).
Any help/advice would be appreciated. ]]> *Trouble* http://www.orchidboard.com/community/pests-diseases/56155-help-please-think-nearly-all-my-orchids-have-spider-mites.html mealy bugs http://www.orchidboard.com/community/pests-diseases/56098-mealy-bugs.html Thu, 12 Jan 2012 17:55:12 GMT so long story sahort i got some new plants and now i have mealy bugs. can i use spectrascide on the orchids. the labes says i can and it also says... so long story sahort i got some new plants and now i have mealy bugs. can i use spectrascide on the orchids. the labes says i can and it also says it controlls and kills on contact mealy bugs but i just wanted to get some user info


tia
scott ]]> jebar77 http://www.orchidboard.com/community/pests-diseases/56098-mealy-bugs.html Question about using Neem oil as a drench http://www.orchidboard.com/community/pests-diseases/56030-question-about-using-neem-oil-drench.html Mon, 09 Jan 2012 17:54:22 GMT Hello, I am an inside/under lights orchid grower. In Fall, I move the orchids inside in the basement. Despite preventative spraying for a month... Hello,
I am an inside/under lights orchid grower. In Fall, I move the orchids inside in the basement. Despite preventative spraying for a month before moving all of the orchid inside, I have had a mealy bug and red spider mite infestation. I would like to use Neem oil in order to avoid commercial insecticides off gassing in my basement. I have mealy bugs in the media in some of my plants. I was wondering if I could use neem oil not only as a a topical application but as a drench application as well. Has anyone done this before with success? What would be the application ratio?...is it different from the topical ratio? Also..Is the DyNaGro Neem Oil different from the Cold Pressed Neem Oil that is used for skin applications?
Thank you
Glenn ]]> zygostates http://www.orchidboard.com/community/pests-diseases/56030-question-about-using-neem-oil-drench.html Beginner with fungus on my first orchid (phalaenopsis) and no clue what to do. Help! http://www.orchidboard.com/community/pests-diseases/56029-beginner-fungus-my-first-orchid-phalaenopsis-no-clue-what-do-help.html Mon, 09 Jan 2012 17:45:00 GMT My first orchid, a Phalaenopsis, has what looks like (to me, a very inexperienced orchid owner ) a fungus taking over its leaves. I took a look at... My first orchid, a Phalaenopsis, has what looks like (to me, a very inexperienced orchid owner ) a fungus taking over its leaves. I took a look at the roots and they are all dead!

The thing that really gets me is that the orchid has flower spikes on it, really healthy beautiful ones about to bloom.

Everything Ive read says don't repot if your flower is blooming or if its mid winter and both of those things are going on.

Ive started treating with a copper anti-fungal spray but I'm not sure if I should leave the plant alone, repot, cut off the leaf (which is really its last large one, the other fell off because of the fungus). And what do I do about all of the dead roots?!

Help :(

]]> JessicaMarie http://www.orchidboard.com/community/pests-diseases/56029-beginner-fungus-my-first-orchid-phalaenopsis-no-clue-what-do-help.html Black Spots Underneath Phal Leaves http://www.orchidboard.com/community/pests-diseases/55917-black-spots-underneath-phal-leaves.html Thu, 05 Jan 2012 10:51:33 GMT Hello, I recently acquired a phalaenopsis orchid and it was doing pretty well for a while. A few weeks ago the flowers started to wilt, then they... Hello,

I recently acquired a phalaenopsis orchid and it was doing pretty well for a while. A few weeks ago the flowers started to wilt, then they all fell off, I cut down the spike, one of the leaves started turning yellow/brown, I cut off obvious rotted roots and planted in new medium (sphagnum moss), now there are black spots underneath the yellow/brown leaf.

The black spots are dusty and I was able to easily wipe them away with a cotton ball soaked with hydrogen peroxide. I'm now worried that my phal has something more serious. As I mentioned, I cut some of the roots but now I'm worried that I did it incorrectly. I sterilized my cutting device with a flame after every cut and I dabbed ground cinnamon on the end of each root I cut.

Thanks to an Orchid Board Member, I did notice that I had the medium packed too tightly and it was too high because it was covering the crown. So about two or three days ago I took a huge chunk of the medium out and now the orchid looks like it has more breathing room. I've looked at pictures of crown rot and I don't think that is it. Can any orchid experts explain what these spots may be?

**NOTE: I have ordered a smaller pot for the orchid and Physan 20, so now I'm just waiting for it to arrive.**

Here are both of the leaves. Only the one on the bottom is turning yellow/brown. *knock on wood* :)


Here's a close-up of the yellowing leaf. That blemish on the left has always been there. It looks like it may have gotten worse and may be splitting... Still not sure.


Here's a shot of the side of the yellowing leaf. The underside of the yellow leaf that is viewable in the picture is where the black spots were before I cleaned them.


Here is the back of the "good" leaf. I have studied it very carefully and have not found any black spots.
]]> Kearneyweard http://www.orchidboard.com/community/pests-diseases/55917-black-spots-underneath-phal-leaves.html Granular Bayer Systemic--dose?? http://www.orchidboard.com/community/pests-diseases/55755-granular-bayer-systemic-dose.html Fri, 30 Dec 2011 17:34:17 GMT Hi All!

I've searched through threads to find the answer to this question but must have missed it.

I have three Phalaenopsis and one is being lightly attacked by some insect (can't locate any but there are small sap bubbles on the spike so something must be at it.) The flowers and leaves appear healthy enough but I'd rather strike early than wait for a nightmare infestation.

I've read about using the Bayer Rose Care Systemic granules and understand that using the granules directly on the bark will damage the roots. I'm thinking I should dissolve the granules in water and apply as a liquid.

Anyone know how much of the Bayer Systemic granules to use per gallon to both solve the insect issue and avoid damaging the plants?

Thanks in advance! I've really enjoyed browsing this forum, there is so much great information for newbies.

Edit to add:

I found a thread that indicated 1 tsp of Bayer 2 in1 Systemic Rose & Flower Care with .22% Imidclorprid per six inches of pot. I would prefer to dissolve the Bayer into water before applying. Has anyone tried that approach? I hate to risk my three little Phals. ]]> ElenaMarie http://www.orchidboard.com/community/pests-diseases/55755-granular-bayer-systemic-dose.html Masdevallia - Thrips? http://www.orchidboard.com/community/pests-diseases/55740-masdevallia-thrips.html Thu, 29 Dec 2011 23:34:28 GMT I have a Masdevallia whose leaves are folded slightly and the leaf surfaces have tiny silver 'scuff marks' all over them. On many other plants I would suspect thrips. Is this possible? ]]> fishmommy http://www.orchidboard.com/community/pests-diseases/55740-masdevallia-thrips.html White substance with small black bugs on my phal http://www.orchidboard.com/community/pests-diseases/55711-white-substance-small-black-bugs-my-phal.html Wed, 28 Dec 2011 19:31:14 GMT I noticed just recently that this small white patch (that does not come off with high powered water) with very small black bugs inside on my phal. ... I noticed just recently that this small white patch (that does not come off with high powered water) with very small black bugs inside on my phal.

Any suggestions of how to rid this plant of this stuff??


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]]> redorchid1 http://www.orchidboard.com/community/pests-diseases/55711-white-substance-small-black-bugs-my-phal.html vanda trouble http://www.orchidboard.com/community/pests-diseases/55649-vanda-trouble.html Mon, 26 Dec 2011 10:46:05 GMT Suddenly, in about 2-3 days, young leaf of v. coerulea, began to yellow. t 22 day, 17 night, rh 65-75%, what could be the reason? Image:... Suddenly, in about 2-3 days, young leaf of v. coerulea, began to yellow.
t 22 day, 17 night, rh 65-75%, what could be the reason?




Thank you! ]]> poluekt_sowranski http://www.orchidboard.com/community/pests-diseases/55649-vanda-trouble.html SOOOOOO SAD!!!! :( http://www.orchidboard.com/community/pests-diseases/55397-soooooo-sad.html Tue, 13 Dec 2011 22:40:26 GMT So last night I was getting ready to hit the hay around midnight when I noticed some discoloration in the leaves of my little Phal Brother Sara Gold.... So last night I was getting ready to hit the hay around midnight when I noticed some discoloration in the leaves of my little Phal Brother Sara Gold. I hadn't noticed before because the leaves always had white residue from whatever chemicals the grower used on it, so the new discoloration wasn't noticeable. The little guy only just started putting out new leaves in the past month or two since I bought it in May. When I turned it over I could see the damage was pretty bad, and on every single leaf. I got out my little 14x jeweler's loupe (you never know when one of these will come in handy!), and saw hundreds of spider mites on the underside of each leaf. :( :( :(

So here's what I did, not that I think it will survive. But you guys with mite experience let me know if there is anything else I can do. I wiped down every leaf top and bottom and every cranny I could get into with 1/2 strength diluted rubbing alcohol with distilled water and a splash of peroxide, using a q tip. Then I unpotted it and sprayed the whole thing down with the dilution. I would have added a drop or 2 of dish soap to the spray bottle, but I only had fancy dish soap with questionable additives. Then I bagged it in a zip loc, partially to try and grow some roots because the darn thing has barely grown any roots either since May, and partially to quarantine it from the other plants. I examined every other orchid in the kitchen, and only found a handful of mites on the little Phal next to the infested one, so I wiped it down as well. Then I cleaned and disinfected the windowsill with the alcohol mix.

Any thoughts guys and gals? ]]> Gage http://www.orchidboard.com/community/pests-diseases/55397-soooooo-sad.html Mold on clay pebbles http://www.orchidboard.com/community/pests-diseases/55391-mold-clay-pebbles.html Tue, 13 Dec 2011 20:01:43 GMT Three years of growing orchids. So far no problems. This year - mold. I have all my orchids in clay pebbles and that seems to be the best medium for... Three years of growing orchids. So far no problems. This year - mold. I have all my orchids in clay pebbles and that seems to be the best medium for me and my plants. I have been repotting yearly evenso (while clay pebbles are supposed to be forever). I always disinfect pebbles by pouring boiling water over it before I repot.

A month ago I discovered one of my orchids having a strange smell when wet so I checked and removed a pebble completely covered in white spores. Now I have discovered another orchids giving the strange smell and it has moldy pieces of clay pebbles in it.

I am kind of running out of good pebbles here, every new bag I buy contains smaller and smaller pieces, which makes it hard for me to fill even 1 cup with big ones, and others just being too small to use on orchids.

Is there any way I can clean porous material like clay pebbles completely? Did anybody succeed in doing so yet? Would combining soda and vinegar hurt the orchids? It will give way higher pH than they like if I do so, but that seems the only natural way of getting 100% getting rid of spores from porous material....

Any thoughts? ]]> opal http://www.orchidboard.com/community/pests-diseases/55391-mold-clay-pebbles.html Soft brown scale on my new ascosenda http://www.orchidboard.com/community/pests-diseases/55356-soft-brown-scale-my-new-ascosenda.html Mon, 12 Dec 2011 13:09:16 GMT I don't have much experience with pests, but after looking at some pictures online I diagnosed my Ascda Princess Mikasa Blue with Soft Brown Scale.
Am I right?



Mostly it affected blooms, there was only one bug on the leaf.




I cut and threw away the flower stem, scraped bug from the leaf with alcohol and thoroughly washed whole plant in the water with dishwashing bubbles.
Luckily this plant was quite isolated.

Is there anything else I could do at the moment? Also would soapy water kill the roots?

Thanks a lot.

PS. Sorry, I made a typo in the post title, but cannot fix it for some reason. ]]> orchideya http://www.orchidboard.com/community/pests-diseases/55356-soft-brown-scale-my-new-ascosenda.html Help identify some leaves problems http://www.orchidboard.com/community/pests-diseases/55343-help-identify-some-leaves-problems.html Sun, 11 Dec 2011 22:43:38 GMT Hello, I need your help! Does anyone have an idea what disease is? 1 to 4 are Cattleya percivaliana and Vanda hybrid with brown sunken spots,... Hello, I need your help!

Does anyone have an idea what disease is?
1 to 4 are Cattleya percivaliana and Vanda hybrid with brown sunken spots, but not watery.
5 and 6 are a strange patching in underside leaves of Vanda suavis and some Cattleya, although don't have relief.

Thanks in advance!
Arnau
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]]> drosera http://www.orchidboard.com/community/pests-diseases/55343-help-identify-some-leaves-problems.html Tiny white bugs in bark http://www.orchidboard.com/community/pests-diseases/55314-tiny-white-bugs-bark.html Sun, 11 Dec 2011 01:03:57 GMT Hi Orchidboard!

I've noticed these itty bitty white bugs crawling around the bark in my orchid pots. I don't see them in my sphagnum moss pots, and I don't see them crawling on the leaves or flowers. I haven't detected any damage to leaves or flowers, either. They crawl around pretty fast all over the bark pieces, and there are white specks stuck to the inside of the pots and bark.

Any ideas about what these are? My main concern is that they might be munching on my roots! I haven't de-potted any to investigate, but the roots I can see through the clear pots seem fine. The plants don't seem to be suffering for it (yet?).

I'm an optimist, so I'm hoping these bugs are somehow benign or beneficial! ;) If not, how can I get rid of them?

Below, the zoomed-out photo shows the many little white specs that are stuck to the inside of the pot. Those aren't the actual bugs, but seem to be bug-related. The bugs are similar in size and color to the specs, though. I've zoomed in on one of the bugs in that picture to show more detail. The pics were taken right after I watered, so the medium is kinda soggy, especially the rice hulls. The medium is only a few months old.
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]]> kalanchoe http://www.orchidboard.com/community/pests-diseases/55314-tiny-white-bugs-bark.html Fungus Gnats,harmful? http://www.orchidboard.com/community/pests-diseases/55218-fungus-gnats-harmful.html Tue, 06 Dec 2011 15:30:24 GMT I've read so many conflicting info on Fungus Gnats. I seem to always have them flying around my orchids, and i detected some small whitish/grey worms which i think are larvae. So, do fungus gnats really harm orchids? or are they just a nuisance to have flying around? ]]> camillenad http://www.orchidboard.com/community/pests-diseases/55218-fungus-gnats-harmful.html <![CDATA[Mites but...don't seem like spider mites...]]> http://www.orchidboard.com/community/pests-diseases/55170-mites-but-dont-seem-like-spider-mites.html Tue, 06 Dec 2011 05:07:58 GMT So, I have mites on a couple of my orchids, and I've been trying to get rid of them for a goodly amount of time now.

However, the problem is, it seems like these little buggers aren't spider mites. They are most certainly not two spotted spider mites, as looking at them with a jeweler's loupe shows absolutely no trace of the characteristic two spots. In addition, I rarely ever find them on the leaves, and they seem to stay on the roots, scrambling for the crevices between the roots and sphagnum if agitated. Their behavior and conditions when they appear seem very unlike spider mites.

I've done some mad scientist (and potentially cruel) experiments with a few of the mites i'd isolated. I've dabbed them with isopropyl, cinnamon extract, and even a 0.2% pyrethrin spray, and the damn things won't seem to die!

Because of this, I've been looking online at various mites, and to my surprise, these mites look most like Tyrophagus putrescentiae...aka mould mites.

Stages of Development | PaDIL Plant Biosecurity Toolbox

Is it possible to get these in your orchid potting mix?

Supposedly they eat mold, various fungi, and algae, as well as decaying matter, so it seems like it might actually be possible. But I don't know, I've never seen anyone mention them before...

If you watch this video, and pause it at 3:29, there's a mite in the middle of the frame that looks exactly like the buggers on mine, including the blackish dot in the middle of it...

aspergillus fumigatus botrytis mucor trichoderma cladosporium - YouTube

So has anyone else encountered these before? ]]> Hakumin http://www.orchidboard.com/community/pests-diseases/55170-mites-but-dont-seem-like-spider-mites.html Red Tip on Spike? Please HELP! http://www.orchidboard.com/community/pests-diseases/55120-red-tip-spike-please-help.html Sun, 04 Dec 2011 02:07:26 GMT Hi Everyone! I am brand new to the orchid world. I received my first (and so far only) Phalaenopsis as a gift from my boyfriend about three months... Hi Everyone! I am brand new to the orchid world. I received my first (and so far only) Phalaenopsis as a gift from my boyfriend about three months ago. It was a plant he bought from the grocery store (but it's still beautiful and it was a thoughtful gift) about two weeks after bringing it home all the flowers shriveled up and died so I puned it. I have a feeling the blooms dying has to do with the fact I get TERRIBLE light in my house but due to winter approaching I couldn't put the plant outside. Since then the plant itself has been doing quite well. The spike has grown about another inch and the leaves have grown nice and big and broad with new leaves everging from the apex. Athough no blooms (most likely because there is not enough teperature variation from night to day) everything is a nice healthy green... until recently.

The very tip of the stalk/spike (not sure what the term should be) has turned a dark red/maroon color. From what I have learned through a little bit of research is that it can be normal for the spike to turn red that it is a process of "tanning" as an adjustment to the light (my orchid sits right next to the window since the light in the house is so poor) or if the stalk is dying it may trun red then dry and be ready for pruning. What concerns me is that this red tip seems to have buds on it. It looks like three different "lobes" right at the very tip and all are red and the redness extends about a centimeter down the spike. Is this normal? If not, what should I do?

**I took pictures but am not sure how to post them because when I click the picture icon it asks for a url and the pics are on my computer not online. ]]> Newbie3 http://www.orchidboard.com/community/pests-diseases/55120-red-tip-spike-please-help.html Help identify holes in leaf in picture! http://www.orchidboard.com/community/pests-diseases/55106-help-identify-holes-leaf-picture.html Sat, 03 Dec 2011 02:08:53 GMT Happy December everyone! I got this baby phal orchid as a gift, but I'm worried about the holes in it. I'm deadly afraid of mealy bugs or any type of disease, and am keeping this away from my other babies. :-) Does anyone know what this could be in the pictures? Thanks! Jenn

I'm enclosing a link of the album bc the pictures are larger. Thanks again.

https://picasaweb.google.com/1141472...eat=directlink ]]> jmain3 http://www.orchidboard.com/community/pests-diseases/55106-help-identify-holes-leaf-picture.html what could these little dots be on my phals? http://www.orchidboard.com/community/pests-diseases/55079-what-could-these-little-dots-my-phals.html Thu, 01 Dec 2011 08:55:36 GMT I got two mini phalaenopsis this week. They look healthy and are loaded with flowers. After close examination of the leaves though, I found some... I got two mini phalaenopsis this week.
They look healthy and are loaded with flowers.

After close examination of the leaves though, I found some small brown spots on some of the leaves. They are found mostly on the underside of the leaves although smoe are on the top side as well.
The area where the spots form are indented.

I also see some subtle yellow spots, which one of the pictures below show.

Is this onset of leaf rot? What could this be?
If anyone has similar experience with phalaenopsis, please let me know what happened to your plants.

Please no answers based on random possible guessing!
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]]> NYCorchidman http://www.orchidboard.com/community/pests-diseases/55079-what-could-these-little-dots-my-phals.html natural bug killer http://www.orchidboard.com/community/pests-diseases/55058-natural-bug-killer.html Wed, 30 Nov 2011 02:58:13 GMT I have the best bug killer in the world and it dosnt harm anything but the bug. A napanthies pitcher plant, this one is a giant napanthies i also... I have the best bug killer in the world and it dosnt harm anything but the bug. A napanthies pitcher plant, this one is a giant napanthies i also have a standerd one.:D they grow very well with orchids and the small ones don't take up too much room.
]]> dendro photo http://www.orchidboard.com/community/pests-diseases/55058-natural-bug-killer.html European equivalent of Physan 20 http://www.orchidboard.com/community/pests-diseases/55051-european-equivalent-physan-20-a.html Tue, 29 Nov 2011 21:51:48 GMT I've just found this:
http://www.amazon.co.uk/MAR-V-CIDE-D...602431&sr=8-38
MAR-V-CIDE Disinfectant, Fungicide, Germicide & Virucide
Active Ingredients: n-Alkyl (50% C14, 40% C12, 10% C16), Dimethyl Benzyl Ammonium Chloride - same as Physan 20. ]]> Val http://www.orchidboard.com/community/pests-diseases/55051-european-equivalent-physan-20-a.html great nontoxic way to combat flying pests http://www.orchidboard.com/community/pests-diseases/55045-great-nontoxic-way-combat-flying-pests.html Tue, 29 Nov 2011 16:41:56 GMT last couple of years when i bring my orchids in. i have always had to fight these damnable black gnats.. they love to go in and out of the orchids... last couple of years when i bring my orchids in. i have always had to fight these damnable black gnats.. they love to go in and out of the orchids substrate causing i am sure some problems.. as well as other types of flying pests that like to hop form plant to plant sucking sap . well a normal fly trap works wonders.. i have it set near the light as the light attracts them.. and since i have brought the plants in.. i have barely seen one flying gnat when before they were in the millions.nice thing is.. where the trap is because its humid it does not dry out so fast and tho i might have to use a bug spray later on for crawlers.. at least im not being inundated with the flying beasties.
]]> beelady http://www.orchidboard.com/community/pests-diseases/55045-great-nontoxic-way-combat-flying-pests.html phal roots with dark spots http://www.orchidboard.com/community/pests-diseases/55012-phal-roots-dark-spots.html Mon, 28 Nov 2011 07:50:49 GMT Hello! As I suspect many find themselves first joining this forum, I have an issue with a couple of my orchids. I have three NoID phals, which... Hello! As I suspect many find themselves first joining this forum, I have an issue with a couple of my orchids.

I have three NoID phals, which despite having very healthy blooms and leaves, seem to have dark spots on the surface of their roots that are exposed to air.

At first I suspected root-rot, tho none of the roots on the surface were mushy, they were quite firm. One of the phals recently finished blooming, so I decided to repot it to check out the roots, and they were all nice and healthy, there's no dark spots on the roots that were 'buried', and they were all firm and pale green/yellow. These spots seem to only appear on roots exposed to the air.

They almost look like burn marks, so I wondered if perhaps they're getting too much sun. They near a west-facing window that's mostly shaded, they don't get a lot of direct sunlight but they do get some. I've never noticed any pests of any kind, on the phals or any of my other orchids.

They're watered once a week, but I check to see that they're mostly dry before doing so. I fed them once in september and october, with 1/4 strength schultz "bloom booster" orchid fertilizer (high potash, I believe), but I have held off as I was noticing this issue in the beginning of november. I'm rambling. I've got a couple ugly flash-photos, hopefully that will be useful (apologies in advance for the hugeness, using my own hosting site):





I just watered them today, hence the damp appearance. They are otherwise extremely healthy with no problems, so this is kind of a mystery. Thanks in advance :) ]]> msparling http://www.orchidboard.com/community/pests-diseases/55012-phal-roots-dark-spots.html Black marks on dracula http://www.orchidboard.com/community/pests-diseases/55011-black-marks-dracula.html Mon, 28 Nov 2011 06:12:57 GMT Hi guys, I was wondering if anyone has faced this. I have two dracula orchids growing in my highland tank: day temps...75-80F and... Hi guys,

I was wondering if anyone has faced this.

I have two dracula orchids growing in my highland tank: day temps...75-80F and night...55-65F. Humidity is sufficient as I have a mist king system and also a humidifier going for most of the day. I have highland nepenthes in the tank with thriving sphagnum moss. I noticed one of the orchids had scale on them..so I have been treating plants and getting it under control. But the other dracula doesn't have scale signs...but still has black marks on leaves. It grows alright... but old leaves get black marks on them. Clearly a fungus. But wanted to get a better idea.

here are pictures:






more pics:

[img:left]http://farm7.staticflickr.com/6098/6416439863_1b55bfae11_z.jpg[/img]


thanks for your attention,

V ]]> vraev http://www.orchidboard.com/community/pests-diseases/55011-black-marks-dracula.html <![CDATA[Bet you don't have these in your greenhouse!]]> http://www.orchidboard.com/community/pests-diseases/54994-bet-you-dont-have-these-your-greenhouse.html Sun, 27 Nov 2011 16:11:12 GMT There are a few novel pests associated with growing orchids in the wild in the tropics. I have coconuts by the ton here so I use the husks for... There are a few novel pests associated with growing orchids in the wild in the tropics. I have coconuts by the ton here so I use the husks for mounting orchids. I keep a little pile of husks for this purpose (great for firing up the BBQ grill also). Some of the critters here like these husks too so you have to be careful when picking up a husk.

A couple of pics attached.

Readbacked Coffee Snake. Very pretty and harmless snake, but it looks a lot like a variety of coral snake found here. I don't generally exam closely enough to confirm the difference because the coral snake, although quite non-aggressive, is potentially fatal.

Black Scorpion. They look like their sting would kill you, but it is only about like a bee sting.

Ants (no pic). Another problem I have here is little black ants (not leaf cutter ants) who like to eat orchid buds and blooms...very annoying to wait for something to bloom only to have it become breakfast for ants. Any suggestions on how to keep these little guys off the blooms? Maybe some kind of non-toxic gooey substance applied around the bloom spike?
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]]> Curtis2010 http://www.orchidboard.com/community/pests-diseases/54994-bet-you-dont-have-these-your-greenhouse.html Will Thuricide kill my orchids? http://www.orchidboard.com/community/pests-diseases/54964-will-thuricide-kill-my-orchids.html Sat, 26 Nov 2011 21:10:44 GMT I have Live Oaks that are infested with Oakmoth Larvae and have Cattleyas, Dendrobiums and Staghorns living in and on them. Will it be O.K. if they... I have Live Oaks that are infested with Oakmoth Larvae and have Cattleyas, Dendrobiums and Staghorns living in and on them. Will it be O.K. if they get a little Thuricide sprayed on them? ]]> kayakindawg http://www.orchidboard.com/community/pests-diseases/54964-will-thuricide-kill-my-orchids.html White Mold Infestation! http://www.orchidboard.com/community/pests-diseases/54865-white-mold-infestation.html Tue, 22 Nov 2011 05:38:07 GMT On my way back from out of town, I check back on in my greenhouse and noticed there are white molds that are growing on some of the plants. They... On my way back from out of town, I check back on in my greenhouse and noticed there are white molds that are growing on some of the plants. They literally seems to grow overnight! I don't know if they are harmful or not, so far I don't see any of the plant tissues showing any symptoms. I took some snapshots below. What could they be?
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]]> Hugorchids http://www.orchidboard.com/community/pests-diseases/54865-white-mold-infestation.html About Physan20 http://www.orchidboard.com/community/pests-diseases/54814-about-physan20.html Sat, 19 Nov 2011 23:43:58 GMT I'm reading about Physan20 and seems to me that it is a good product, but it's not available in Canada.Some one told me that in Canadian Tier store in the pool department you can by their house brand Algaecide3 (5%) and claims that is same as Physan20 but only at 5%. Does anybody used this product and what would be the ratio to use.

Thanks ]]> keonee http://www.orchidboard.com/community/pests-diseases/54814-about-physan20.html Predatory Mites for Spider Mites? http://www.orchidboard.com/community/pests-diseases/54714-predatory-mites-spider-mites.html Tue, 15 Nov 2011 08:57:46 GMT So has anyone tried predatory mites for indoor growing? I've found some interesting reviews and anecdotes of using predatory mites to eradicate spider mite populations, and was wondering if it might be a good method to get rid of spider mites.

One website says that Neoseulus californicus is a good species for indoor growing....

While I guess fighting fire with fire, or in this case, mites with mites may not be for the squeamish, but according to my research, it seems to be one of the most effective methods of getting rid of spider mites as well as one of the safest of all methods with zero negative effects on the plant and humans (if you get past the negative effect of the idea of introducing more little creepy crawlies to your plants)

Thoughts anyone? ]]> Hakumin http://www.orchidboard.com/community/pests-diseases/54714-predatory-mites-spider-mites.html Masdevallia strobelii with yellowing new growth http://www.orchidboard.com/community/pests-diseases/54686-masdevallia-strobelii-yellowing-new-growth.html Mon, 14 Nov 2011 04:44:10 GMT I've had this Masdie since July of this year. It's been growing beautifully and still is, except for one new growth that has turned yellow. It's growing healthy new roots and has several other new growths besides this one that are as healthy as ever. I see no signs of fungus or bacteria. It's growing in New Zealand sphag in a tank with indirect natural light supplemented by a fluorescent tube. Temps are in the mid 70's during the day, mid to high 60's at night. RH around 80-95%

Any ideas as to why this one growth is dying?

I'm pretty sure the damage on the older leaf is purely physical/mechanical. It was like that when I got it.

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]]> greenbean http://www.orchidboard.com/community/pests-diseases/54686-masdevallia-strobelii-yellowing-new-growth.html Star Sheped Hard Brittle Beasties http://www.orchidboard.com/community/pests-diseases/54677-star-sheped-hard-brittle-beasties.html Sun, 13 Nov 2011 19:34:34 GMT Noticed these on the underside of an orchid leaf today. Any suggestions to ID and treat? Noticed these on the underside of an orchid leaf today. Any suggestions to ID and treat?
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]]> Curtis2010 http://www.orchidboard.com/community/pests-diseases/54677-star-sheped-hard-brittle-beasties.html Little black speckles... http://www.orchidboard.com/community/pests-diseases/54475-little-black-speckles.html Sat, 05 Nov 2011 16:59:54 GMT Got small black spots on the leaves of my baelara and odynchidium. I was going to treat it for leaf rot or black spot, but Im only really guessing... Got small black spots on the leaves of my baelara and odynchidium. I was going to treat it for leaf rot or black spot, but Im only really guessing what it is. I will try to get a photo too but any suggestions would be really helpful.

OH and I bought lots of reduced Paphs... do they have browny coloured roots rather than green roots?:dunno:

Peace xx ]]> Starla http://www.orchidboard.com/community/pests-diseases/54475-little-black-speckles.html Mite ID? http://www.orchidboard.com/community/pests-diseases/54427-mite-id.html Fri, 04 Nov 2011 03:25:05 GMT So, I found a bunch of these on one of my potted orchids today when examining it. I noticed that there was the characteristic mite webs, but only... So, I found a bunch of these on one of my potted orchids today when examining it. I noticed that there was the characteristic mite webs, but only between the roots and the sphagnum.

This one is about .3mm wide and .6mm long. They're white and somewhat shiny, and while I wouldn't call them fuzzy, they have visible hairs.

All of these were crawling around on the exposed portion of the roots and nowhere else on the plant, and the webs were also confined to the roots and sphagnum.

None of the other nearby plants have them as far as I can tell.

Curious thing is, before I photographed this little bugger, I dunked it into a droplet of 91% isopropyl, and to my surprise, after it dried up, it started crawling around again! So I guess isopropyl isn't going to help cure the problem...

What are they and how do I get rid of them?



]]> Hakumin http://www.orchidboard.com/community/pests-diseases/54427-mite-id.html Phal with crown rot... HELP!!! http://www.orchidboard.com/community/pests-diseases/54383-phal-crown-rot-help.html Tue, 01 Nov 2011 20:54:41 GMT I have several phals, almost all of which are in potted bark. Two of them are not, and I had plans to remedy this situation today when I made a very... I have several phals, almost all of which are in potted bark. Two of them are not, and I had plans to remedy this situation today when I made a very sad discovery. My largest phal (which is in peat moss) is not doing well. The entire crown of the plant came off this afternoon.... leaving no leaves. Over the last few weeks it dropped several leaves, which I thought was because it got a little too much light when I moved them to a different location. Now I'm worried it is dying. What am I dealing with here? How do I attempt to save this beautiful plant? I have been keeping phals for 3 years with really no major issues. It figures the one that is dying cost $$$! I'm willing to do whatever it takes to save it, just not sure where to start and what to do. ]]> QHMaverick http://www.orchidboard.com/community/pests-diseases/54383-phal-crown-rot-help.html <![CDATA[Dendrobium Leaf Drop & Blotchy Leaves]]> http://www.orchidboard.com/community/pests-diseases/54375-dendrobium-leaf-drop-blotchy-leaves.html Tue, 01 Nov 2011 17:00:53 GMT Please forgive me, I posted a few days ago in the beginner section, but thought I might find more help here.

My Dendrobium Yellow Chinsai 'Little Joe' was doing fine this summer, it's third year. By late summer, I noticed lots of small black spots on a number of leaves and suspected a fungal problem (I had two other orchids (Psycopsis and Phaleaneopsis) that also suffered from a fungal problem at the time- they died too much water and lack of ventilation in a bathroom window) I repotted and treated with Phyton 27. Things seemed to improve, but the orchid still has a number of blotchy yellow/green leaves instead of solid green- too many blotchy leaves.

With cooler weather, I have withheld water like I do every fall/winter except for a sip. This year, any water, and large numbers of leaves instantly turn yellow and drop. I want to think that the leaf drop is due to watering during cool weather. but the blotchy leaves don't look normal. I've seen this orchid at it's best and something is definitely wrong.

Advice appreciated

David
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]]> DSDNYC http://www.orchidboard.com/community/pests-diseases/54375-dendrobium-leaf-drop-blotchy-leaves.html Sciarid Fly and Thrip Control http://www.orchidboard.com/community/pests-diseases/54293-sciarid-fly-thrip-control.html Sat, 29 Oct 2011 16:37:36 GMT I'm trying a natural solution to those awful flies that live in orchid media. I haven't tried this at home before so I'm eager to see what the results are.

Control Sciarid Fly with Sciarid nematodes. Control Thrip with Ambleysius. Sciarid Fly and Thrip attack plants in greenhouses and concervatories. Sciarid flies crawls over the compost surface and the larval stage attacks the roots. Thrip attacks plan ]]> Kelo http://www.orchidboard.com/community/pests-diseases/54293-sciarid-fly-thrip-control.html Sudden death of Aerangis http://www.orchidboard.com/community/pests-diseases/54286-sudden-death-aerangis.html Sat, 29 Oct 2011 10:12:03 GMT Hi, I was wondering whether anybody can help me. I have, or rather had a big specimen Aerangis distincta that is mounted, with 3 shoots the... Hi,

I was wondering whether anybody can help me. I have, or rather had a big specimen Aerangis distincta that is mounted, with 3 shoots the smaller ones with about 4 leaves, the large one had 9. 4 flower stalks.

3 weeks ago suddenly the flower buds shrivelled, then the plant started shedding all its leaves, but one (getting yellow from the growing point), then the roots are drying from the growing point. At first the disease started slow, then accelerated (most of the effects visible in the picture started 3 days ago). I have had this happen once before with another Aerangis that I bought earlier in the summer. Although that happened two years ago.

By the looks of it, I have to write off the plant. Not quite sure what this may be: could be Fusarium, which is odd as I always treat the greenhouse with Cleary's and Agri Foss such that I don't get problems with diseases in the winter.

Any advice would be highly appreciated

Regards
Lars
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]]> Lars Kurth http://www.orchidboard.com/community/pests-diseases/54286-sudden-death-aerangis.html Phal Amadeus leaf lumps http://www.orchidboard.com/community/pests-diseases/54274-phal-amadeus-leaf-lumps.html Fri, 28 Oct 2011 14:37:01 GMT There are two leaves developing hard lumps or nodes on the under side of them. Any ideas why this is happening or what causes this? Image:... There are two leaves developing hard lumps or nodes on the under side of them. Any ideas why this is happening or what causes this?


]]> Kelo http://www.orchidboard.com/community/pests-diseases/54274-phal-amadeus-leaf-lumps.html Beneficial Insects-- Success, I Think http://www.orchidboard.com/community/pests-diseases/54243-beneficial-insects-success-i-think.html Wed, 26 Oct 2011 18:22:53 GMT So far I have good news to report. A few weeks ago I reported a huge infestation of mealy bugs. I had been using SucraShield and Neem oil to... So far I have good news to report. A few weeks ago I reported a huge infestation of mealy bugs. I had been using SucraShield and Neem oil to protect a family of frogs living in my greenhouse. I was not getting the upper hand. Thanks to Ray and Camille on this site I ordered 250-300 Cryptolaemus montrouzieri. They are small beetles that look like small ladybugs. I put them in my greenhouse on infected plants Sept. 27. They have mated, layed eggs, and I now have big mealy bug eating larvae. I am told to give them two to four months to see the good results. I am encouraged. Thanks to Orchid Board friends for their great suggestions. I will keep you posted. ]]> Ashby Chadburn http://www.orchidboard.com/community/pests-diseases/54243-beneficial-insects-success-i-think.html spots on my newly saved cattleya http://www.orchidboard.com/community/pests-diseases/54215-spots-my-newly-saved-cattleya.html Tue, 25 Oct 2011 11:05:58 GMT So i found a cattleya orchid in my garden that was laying in a hot sun for a very long time. When i found it, it was blooming. The pot was toppled to... So i found a cattleya orchid in my garden that was laying in a hot sun for a very long time. When i found it, it was blooming. The pot was toppled to the side and it was growing sideways. After it finished blooming, I told myself that I was going to save it by repotting and adopting it to my collection. However, I'm a little concern about some black markings that it has on its leaves. Can someone help me? I don't want it to spread to my one other healthy cattleya (it seems to me that cattleyas love sunlight and they're my only orchids that didn't get sunburn when i moved my orchids outdoors). I live in Hawaii. I just need to know if these spots are contagious and or if i could cut the pseudobulbs? Just any advice would help! Thanks! ]]> jimkamal http://www.orchidboard.com/community/pests-diseases/54215-spots-my-newly-saved-cattleya.html