Problem with Asconcenda
User Name

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

menu menu

Donate Now
and become
Forum Supporter.

Problem with Asconcenda
Many perks!



Fauna Top Sites
Old 07-16-2008, 07:26 PM
Don Perusse Don Perusse is offline
Senior Member

Join Date: Feb 2007
Zone: 8b
Location: SW Georgia
Posts: 1,321
Default Problem with Asconcenda

I didn't know whether to post here or the Vanda alliance as my problem is with one of my ascocendas. A couple weeks ago I noticed white spots on the leaves. It looked like something ate the tissue on the top and bottom leaving a white membrane in the middle. Then they turned to brown and almost black. Can use help in determining the cause? Is is bugs, a fungus or bacteria?
Maybe someone else has had the same problem.

Reply With Quote
Old 07-16-2008, 09:02 PM
kiki-do kiki-do is offline
Senior Member

Join Date: Jul 2007
Zone: 4a
Location: Rumford, Maine
Posts: 2,671

I don't have a clue Don, but bumping this back to the top. It sounds like some type of bug, though.
Reply With Quote
Old 07-17-2008, 10:58 AM
cneos's Avatar
cneos cneos is offline
Senior Member

Join Date: Apr 2006
Zone: 5a
Location: New Hampshire
Posts: 840

Is this only occurring on the upper leaves? There appears to be a pattern of the spots that suggest sunburn.

The whitened tissue is like a blister. If too much damage occurs, the tissue dessicates and turns brown or black.

Vandas aren't as susceptible to insects as other genera, but sucking insects - mealy bug or scale - can cause similar damage. Inspect your plants and treat appropriately. (We've managed to keep insects under control with alcohol and Safer insecticidal Soap)

Incidentally, a friend reported similar damage to her cattleya collection that is 'enjoying' the summer outdoors. All of a sudden, the catts had small puncture wounds on the upper side of the leaves. The tissue surrounding the wounds seemed faded and soft; ultimately the spots turned brown. Turns out, the culprit was a hailstorm.
Reply With Quote
Old 07-17-2008, 11:25 AM
JennS JennS is offline
Senior Member

Join Date: Jun 2008
Zone: 9b
Location: Orlando, FL
Age: 38
Posts: 1,073

I am not positive, but I have similar looking black marks on one of my vandas. Mine looks like the marks that are on the lower leaves of yours, not really the top leave that is shown close up. I have determined the small black spots on mine as sun spots. I wouldn't really call them sunburn though, but it is a result of over exposure. I just kept adjusting mine until I didn't see any more spots. There are a few larger spots on mine also like the large black on you have and it is the same thing. I would check for mushiness. If they are still as hard as the rest of the leaf it is probably fine. If they seem at all mushy I would assume it is a fungus of some sort. You might want to treat with Physan or somethign (not sure if this is the correct thing for fungus but someone else might know for sure) similar. If the top leave that had the white spot appears to have spreading then I would get worried. If is seems to stay in one spot you are probably fine.
Reply With Quote


black, brown, membrane, middle, white, asconcenda

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
Phal problem - the buds are drying out heathenpride Beginner Discussion 3 01-29-2008 12:09 PM
Problem Buying Orchids Online Graham Beginner Discussion 21 01-21-2008 05:21 PM
Problem with logging into Chat Jalizar News, Updates & Feedback 1 06-13-2007 08:36 PM
Orchid problem Fishinfl321 Beginner Discussion 4 12-10-2006 09:46 AM
Problem with some roots turning black in S/H Linnie Semi-Hydroponic Culture 13 11-19-2006 06:59 PM

All times are GMT -4. The time now is 12:24 PM.

© 2007
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.