Flower spikes that turn black and die on vandas, cattleyas and dendrobiums
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.

Flower spikes that turn black and die on vandas, cattleyas and dendrobiums
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
Go Back   Orchid Board - Most Complete Orchid Forum on the web ! > >
Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 05-30-2008, 01:10 PM
LILOBODO LILOBODO is offline
Jr. Member
 

Join Date: Mar 2008
Posts: 3
Flower spikes that turn black and die on vandas, cattleyas and dendrobiums
Default Flower spikes that turn black and die on vandas, cattleyas and dendrobiums

I have several vandas, cattleyas, and denbrobiums that have been happily coexisting on our lanai for several years. Recently, they all develop what appear to be normal flower spikes, but all either turn black and dry up, or the flower is deformed. Sounds like virus disease to me. What do you think?
Reply With Quote
  #2  
Old 05-30-2008, 01:17 PM
khill khill is offline
Senior Member
 

Join Date: Apr 2007
Location: SW Florida
Posts: 560
Default

The first thing I would check for is pests. Thrips can do exactly what you are describing.
Reply With Quote
  #3  
Old 05-31-2008, 12:30 PM
LILOBODO LILOBODO is offline
Jr. Member
 

Join Date: Mar 2008
Posts: 3
Flower spikes that turn black and die on vandas, cattleyas and dendrobiums
Default

Thanks for offering a ray of hope. Can you give me some suggestions as to what I should be looking for when I check for thrips?
Reply With Quote
  #4  
Old 06-13-2008, 04:19 PM
fredr fredr is offline
Member
 

Join Date: Apr 2008
Zone: 10b
Location: Naples, FL
Age: 86
Posts: 74
Default

I didn't see any response to the question about thrips. How does one find them?

I have the same problem with some new growth. Others on the same orchid are fine. What gives?

See picture.

I have this problem with several plants. I have 'banrot' on order as I think it might be a fungus of some kind.

Fred
Attached Thumbnails
Flower spikes that turn black and die on vandas, cattleyas and dendrobiums-dsc_5586sa-jpg  
Reply With Quote
  #5  
Old 06-13-2008, 04:30 PM
Dorothy Dorothy is offline
Senior Member
 

Join Date: Apr 2007
Zone: 7b
Location: Long Island, NY
Age: 62
Posts: 7,321
Default

Try this link - it has some photos in it - Insect and Arthropod Pest Identi
and this one - Diagnosing culture problems - Pests
Reply With Quote
  #6  
Old 06-13-2008, 04:43 PM
fredr fredr is offline
Member
 

Join Date: Apr 2008
Zone: 10b
Location: Naples, FL
Age: 86
Posts: 74
Default

Wow! 40 pages and not a single reference to a black spike tip and no pics.

The second link has colored pics but nothing close to my problem. Have you ever had such blackened tips?

Fred
Reply With Quote
  #7  
Old 06-13-2008, 05:00 PM
Dorothy Dorothy is offline
Senior Member
 

Join Date: Apr 2007
Zone: 7b
Location: Long Island, NY
Age: 62
Posts: 7,321
Default

No, Fred I have not
Reply With Quote
  #8  
Old 06-13-2008, 06:26 PM
isurus79's Avatar
isurus79 isurus79 is offline
Senior Member
American Orchid Society Judge
 

Join Date: Sep 2007
Zone: 8b
Location: San Antonio, Texas
Age: 44
Posts: 10,154
Default

The only time Ive ever seen this type of thing happen was with a Cattleya skinneri. The rot on top was a symptom of total rot down at the root level. I almost lost the whole plant. This happened during our rainy season a few years back and the plant is still recovering, though nicely I might add. LILOBODO & Fredr, I would definitely pull your plants out and check for some rot either on the roots, p-bulbs or rhizomes. If thats not the problem, then I dunno!
__________________
Stephen Van Kampen-Lewis

Pics on Flickr

Instagram

YouTube
Reply With Quote
  #9  
Old 06-13-2008, 07:10 PM
Des Des is offline
Senior Member
 

Join Date: Nov 2007
Location: Port Elizabeth
Age: 76
Posts: 898
Default

Only time that I have seen flowers flowers go black ,was one very cold winter we had here with some frost that got to the plants
It could also be botrytis a fungal infection which develops during an early morning temperature drop
Could it be something that the folks next door are spraying to get rid of weeds ( had that once )
Anyhow hope you find the problem .
Reply With Quote
  #10  
Old 06-14-2008, 12:39 PM
Rothie Rothie is offline
Senior Member
 

Join Date: Apr 2008
Zone: 9a
Location: North Central Florida
Posts: 118
Flower spikes that turn black and die on vandas, cattleyas and dendrobiums
Default

Dorothy-
Thanks,once again,for more helpful links!
Reply With Quote
Reply

Bookmarks

Tags
black, cattleyas, dendrobiums, die, flower, spikes, vandas


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


All times are GMT -4. The time now is 08:01 AM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.