Spots normal or not?
Login
User Name
Password   


Registration is FREE. Click to become a member of OrchidBoard community
(You're NOT logged in)

menu menu

Sponsor
Donate Now
and become
Forum Supporter.

Spots normal or not?
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 08-18-2019, 11:31 AM
Ridley Ann Ridley Ann is offline
Jr. Member
 

Join Date: Apr 2019
Zone: 10a
Posts: 21
Spots normal or not? Female
Default Spots normal or not?

I have some spots on my oncidium that either I just havenít noticed or have just started showing up. Is this something I need to be concerned about? Should I spray with hydrogen Peroxide just in case?
Attached Thumbnails
Spots normal or not?-2baa7663-ea20-4eab-b7ef-8c63731d5df4-jpg   Spots normal or not?-847803c6-00d2-460a-9ee6-ffbada04822e-jpg   Spots normal or not?-4ecdce53-ad01-4356-ae5d-b2332f0e525e-jpg   Spots normal or not?-6130d544-f055-4f90-92da-01b51c98139d-jpg  
Reply With Quote
  #2  
Old 08-18-2019, 11:46 AM
rbarata rbarata is offline
Senior Member
 

Join Date: Mar 2015
Zone: 10a
Location: Abrantes
Posts: 3,573
Spots normal or not? Male
Default

I wouldn't worry about it...oncidiums are prone to that kind of spots.
Be careful where you use H2O2...never on the roots and on the rest of the plant it must be diluted in water.
__________________
Meteo data at my city here.
Reply With Quote
Post Thanks / Like - 1 Likes
Likes neophyte liked this post
  #3  
Old 08-18-2019, 04:53 PM
SouthPark's Avatar
SouthPark SouthPark is offline
Senior Member
 

Join Date: Dec 2018
Member of:AOS
Location: Australia
Posts: 458
Spots normal or not? Male
Default

Quote:
Originally Posted by Ridley Ann View Post
I have some spots on my oncidium that either I just havenít noticed or have just started showing up. Is this something I need to be concerned about? Should I spray with hydrogen Peroxide just in case?
If the spots are due to sucking insects, then probably better off spraying the leaves with a soap solution for plants, like natra soap or something.

Give the plant leaves and roots good air circulation - all of the time, and if you can ----- just water the growing media and roots only.

Check to see if there are signs of 'scale insect' on the leaves. If there are signs of that, then may need to use a cloth or something with soap solution to remove them. Followed by a nice spray of soap solution on the leaves. And if any water happens to get into the crown area, then might have to tip the plant upside down to get rid of any water buildup.

Last edited by SouthPark; 08-18-2019 at 04:59 PM..
Reply With Quote
Post Thanks / Like - 1 Likes
Likes neophyte liked this post
  #4  
Old 08-18-2019, 05:22 PM
rbarata rbarata is offline
Senior Member
 

Join Date: Mar 2015
Zone: 10a
Location: Abrantes
Posts: 3,573
Spots normal or not? Male
Default

Do you grow it outdoors?
__________________
Meteo data at my city here.
Reply With Quote
Post Thanks / Like - 1 Likes
Likes SouthPark liked this post
  #5  
Old 08-18-2019, 07:13 PM
neophyte neophyte is offline
Senior Member
 

Join Date: Feb 2016
Location: Bay Area
Posts: 148
Spots normal or not?
Default

is it true that brown spots surrounded by a ring of yellow are usually a sign of fungal/bacterial infection? and that scale (or is it mites) usually causes leaves to develop a silvery complexion? that's what i've read somewhere. i'd say it's a fungal infection - as rbarata said, certain oncidiums are prone to develop spotting (eg. Oncidium Sharry Baby).i think you should just try to avoid getting water splashed on the leaves during watering and provide adequate air circulation (as per southpark's advice).

Last edited by neophyte; 08-19-2019 at 12:50 AM..
Reply With Quote
Post Thanks / Like - 1 Likes
Likes SouthPark liked this post
  #6  
Old 08-19-2019, 08:51 AM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Location: Oak Island NC
Posts: 10,340
Spots normal or not? Male
Default

About the only way to avoid such spotting is to have high humidity, good air movement, and irrigate with pure water containing a tiny amount of fertilizer, while keeping all insects away. A tough combination to achieve for the home grower.

A spot surrounded by a yellow ring may be an indication of an inset bite, with juices sucked out of the immediate area, but could also be a fungal infection if a water droplet stood on the leaf and became an incubator.

A silvery sheen to leaves is often an indication of mites, which love the thin leaves of oncids, and thrive when RH is low.
__________________
Ray Barkalow, Orchid Iconoclast
Want Better Plants? READ THIS
shop.firstrays.com

Free Shipping in the US! (see terms & conditions for details)
Reply With Quote
  #7  
Old 08-19-2019, 10:44 AM
Ridley Ann Ridley Ann is offline
Jr. Member
 

Join Date: Apr 2019
Zone: 10a
Posts: 21
Spots normal or not? Female
Default

Wow thanks everyone!

I do keep my orchids outside, but in a screened in porch. I live in central Florida so the humidity is always there so I donít have to worry about that. The last week weíve had A LOT of rain so Iím not sure if that had something to do with it. (I just noticed these spots but that doesnít mean that they havenít been there for a while.) This plant is next to my other Oncidium and that one doesnít have any spots that I can see.
Reply With Quote
  #8  
Old 08-19-2019, 10:52 AM
WaterWitchin's Avatar
WaterWitchin WaterWitchin is online now
Senior Member
 

Join Date: Feb 2011
Zone: 6a
Location: Kansas
Posts: 774
Default

Quote:
Originally Posted by Ridley Ann View Post
Wow thanks everyone!

I do keep my orchids outside, but in a screened in porch. I live in central Florida so the humidity is always there so I donít have to worry about that. The last week weíve had A LOT of rain so Iím not sure if that had something to do with it. (I just noticed these spots but that doesnít mean that they havenít been there for a while.) This plant is next to my other Oncidium and that one doesnít have any spots that I can see.
Yep, plenty of humidity there. And now a LOT of rain. So do you have a fan blowing on them? Mine are all outside in Kansas heat and high humidity, and record rains this year in my neck of the woods. I usually have a fan running on them from about 5:00 a.m. to 9:00 p.m. This year I've had to just leave the fan on 24/7 and I'm still getting some spotting. I figure what I'm using in extra electricity is offset by not having to water all the rest of the gardens this year.
Reply With Quote
  #9  
Old 08-28-2019, 10:47 PM
Ridley Ann Ridley Ann is offline
Jr. Member
 

Join Date: Apr 2019
Zone: 10a
Posts: 21
Spots normal or not? Female
Default

So my spots are turning into dying tips We did just get a week of non stop rain but Iím not sure if itís the high humidity or not because my other Oncidium isnít spotting at all. Do you think I should cut back the brown tips?

Also itís got two new growths popping out so I know itís still growing. Iím just not sure what to do.
Attached Thumbnails
Spots normal or not?-fc4ac8b4-ab03-459e-8aaa-0ea80b815617-jpg   Spots normal or not?-464147c2-5189-42dd-afc0-2eca36462080-jpg   Spots normal or not?-dac2b85b-537f-4edb-b009-15e7875f0b35-jpg  
Reply With Quote
  #10  
Old 08-29-2019, 01:46 AM
SouthPark's Avatar
SouthPark SouthPark is offline
Senior Member
 

Join Date: Dec 2018
Member of:AOS
Location: Australia
Posts: 458
Spots normal or not? Male
Default

If the dying tips aren't due to over-fertilisation, and assuming the issue is fungal ---- then another remedy we try over here in Australia is "Yates Anti Rot Phosacid Systemic Fungicide". Maybe there are equivalents over there where you are.
Reply With Quote
Reply

Bookmarks

Tags
concerned, hydrogen, peroxide, spots, spray


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dark spots on leaves of plant beginning dormancy normal? TomThumb Beginner Discussion 17 10-14-2018 08:20 PM
Phal Bellina Yellow Spots Manu Pests & Diseases 49 06-10-2017 10:55 PM
Dendrobium with black and yellow spots NKOrchid Pests & Diseases 47 10-18-2016 05:49 AM
Please help identify these leaf spots - Brassidium Dr John mrphilips Pests & Diseases 18 11-19-2015 09:32 AM
Black Spots vs. Variety in Pigmentation cattspeciescollector Pests & Diseases 6 10-25-2014 08:28 AM

All times are GMT -4. The time now is 08:41 AM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.