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  #1  
Old 01-24-2013, 09:41 PM
Tim P.'s Avatar
Tim P. Tim P. is offline
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Wierd clear beads on phal leafs Male
Question Wierd clear beads on phal leafs

I was away from home for almost a whole month and had my mom taking care of my orchids as she usually does when I am at college. When i came back today there was one of my orchids that has wierd clear bead looking substance scattered on its bottom leafs... two out of the three... the fourth one is dying. i have also lost a few leafs from this orchid. Two not counting the one that is currently dying. I included pictures because i am worried that it is a virus or something this is my favorite orchid. it is named spilt paint Thanks for your time and sorry for my poor spelling and punctuation. i got this new laptop and it is driving me up a wall, almost as much as my poor orchid

i have all my orchids in close proximity and in a 50 degree environment (oops got a bit chilly but was trying to induce blooming)
Thank you in advance.
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  #2  
Old 01-25-2013, 02:40 AM
NYCorchidman NYCorchidman is offline
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Well, first off, 50 is a bit too low for phals unless you've done this before and your phals are alright with it. Also, red/rose purple colored phal hybrids can take 50s during winter time I read, although I personally do not dare.

ALL my phals hybrids regardless of what color and size, bloom on schedule and they never experience anything lower than 60 at night.
So there!

Regarding those clear spots, I have no idea unless they are sugar sap from the leaves, which almost all my dendrobiums and cattleyas produce, but not phals.

Are they sticky to touch?
Do you see any bugs on either side of the affected leaves?
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  #3  
Old 01-25-2013, 08:23 AM
chilover chilover is offline
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I agree, 50 seems way too cold. I keep my phals on window sills and my house stays about 75 all winter in Michigan. We heat with wood. It's naturally a little cooler near the window but never that cold. I have 8 in bloom right now. The spots remind me also of the sap that a cattleya has. Very strange unless it's from the stress of being too cool. Hopefully someone else will chime in and know what they are.

Cathy
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  #4  
Old 01-25-2013, 08:41 AM
Paul Mc Paul Mc is offline
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I'm not sure about those bumps, but a few of mine developed some bumps a few years ago. They appear to be fine, just unsightly.

So does that room always remain at 50? Its not necessarily the low temp they need to induce blooming, but a multiple of factors such as shortened daylight span, etc... Regarding the temps, 50 would be way too low for my preference, but its more the fluctuation of temps that is important as opposed to maintaining a solid 50 day and night, hence my question. They need about a 10 to 15 temp difference from day to night to help initiate the spikes, among other environmental factors.
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Old 01-25-2013, 11:54 AM
silken silken is offline
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My thought is that it could be too cool if it is at 50F And if the room is that and they are on a window sill, they could be getting even cooler, especially at night. Paul has some good questions as to when is it 50F etc. My Phals live in the greenhouse where the coolest area gets to 55F at night and they are fine and this does induce blooms. But I try to keep them away from the coolest end. Good light at the same time is necessary for blooms too, it seems. They are tropical plants and some may take the cool better than others. It may be a form of stress, especially since the leaves are dying off.

On the other hand some orchids do exude honeydew drops and unless there are sap sucking insects on it, it is usually considered a thing of no concern. But all over the leaf like that seems a bit much. I would move it to a bit warmer area and see if the remaining leaves recover. Keeping it too cool and wet will also cause root rot.

Last edited by silken; 01-25-2013 at 11:57 AM..
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  #6  
Old 01-25-2013, 12:08 PM
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Tim P. Tim P. is offline
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Quote:
Originally Posted by NYCorchidman View Post
Well, first off, 50 is a bit too low for phals unless you've done this before and your phals are alright with it. Also, red/rose purple colored phal hybrids can take 50s during winter time I read, although I personally do not dare.

ALL my phals hybrids regardless of what color and size, bloom on schedule and they never experience anything lower than 60 at night.
So there!

Regarding those clear spots, I have no idea unless they are sugar sap from the leaves, which almost all my dendrobiums and cattleyas produce, but not phals.

Are they sticky to touch?
Do you see any bugs on either side of the affected leaves?
i was scared to touch it for the chance that it may be a disease. :? ill try that. And yes.. it was a bit chilly. I diddnt get to monitor them and they actually were at 60 when I left. Yesterday was the coldest day of the winter so it was especially cold in the upstairs. And i dont believe i have bugs, all my phals are right there and none of the other ones have symptoms

---------- Post added at 11:08 AM ---------- Previous post was at 11:03 AM ----------

My next issue would be how to get them to spike then if i move them downstairs. The reason I moved them to a cooler upstairs was to induce spiking. downstairs it is a pretty constant 70 degrees. How would you handle this situation? could they still spike by being closer to a window where it would be a bit cooler?
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  #7  
Old 01-25-2013, 12:21 PM
silken silken is offline
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They only need a cooling period of a few weeks. I usually go for about 4 weeks. If they are going to spike they will by then or soon after.
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  #8  
Old 01-25-2013, 12:44 PM
Paul Mc Paul Mc is offline
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I grow all of mine in a house set at 69F, but they are by windows to feel a slight chill in the evening and the warmth if the day. They bloom just fine if they get enough light.

I wouldn't be so quick to dismiss a possible infestation though. They don't always attack all plants at the same time. I would just look to see and if so remove it from the others as a safe guard.
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  #9  
Old 01-25-2013, 12:55 PM
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Tim P. Tim P. is offline
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Do you guys by any chance think it is a virus? it is wierd because all the old leafs have those droplet things on them and the new leaf is seemingly fine except for one brown crack in the main vein of the center of the leaf that wasnt there when i left a month ago. Im getting a little worried ;(
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  #10  
Old 01-25-2013, 01:25 PM
calypsoB calypsoB is offline
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Whenever I have had those beads it has usually ended up to be bugs. It is entirely possible that other plants don't show symptoms but still have the problem. Also if the new leaf is cracking you may need some fertilizer. It could also be if you bought this from a green house that it is going through withdrawals. Try and give it some warm humidity and seaweed juice
ETA probably not a virus.
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