Black spots on Cattleya leaves
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.

Black spots on Cattleya leaves
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
Register Black spots on Cattleya leaves Members Black spots on Cattleya leaves Black spots on Cattleya leaves Today's PostsBlack spots on Cattleya leaves Black spots on Cattleya leaves Black spots on Cattleya leaves
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 02-03-2011, 09:10 PM
orchideya
Guest
 

Posts: n/a
Default Black spots on Cattleya leaves

Hello,
I purchased a small Cattleya division online and it came with black spots on leaves. I potted it into bark mix. Could you please look at the picture and let me know if this black stuff is just physical damage or fungus or other type of disease. Should I cut off the parts of the leaves where black is?
Thanks a lot
Attached Thumbnails
Black spots on Cattleya leaves-dsc_1707-jpg   Black spots on Cattleya leaves-dsc_1708-jpg  

Last edited by orchideya; 02-03-2011 at 09:37 PM..
Reply With Quote
  #2  
Old 02-03-2011, 09:27 PM
Zoi2 Zoi2 is offline
Senior Member
 

Join Date: Jan 2009
Zone: 5a
Member of:OSGKC
Location: Kansas City, MO
Age: 66
Posts: 4,773
Default

It looks like a fungal infection to me. Does this little guy have any roots?
Joann
Reply With Quote
  #3  
Old 02-03-2011, 09:34 PM
orchideya
Guest
 

Posts: n/a
Default

It seems like roots were cut short, maybe to fit into the small pot it came with. The newest growth has some fresh green roots, but they look cut too. Would it grow new roots? Should I remove the black leaves? There is a bit of black on bulbs and newest growth too. What do I do? Please help.
Reply With Quote
  #4  
Old 02-03-2011, 10:03 PM
Zoi2 Zoi2 is offline
Senior Member
 

Join Date: Jan 2009
Zone: 5a
Member of:OSGKC
Location: Kansas City, MO
Age: 66
Posts: 4,773
Default

Can you post a picture showing the other side of the plant? Is the black on the newest growth on the paper sheath or actually on the pbulb?
If this were my plant, I would cut the black portion off the leaf and treat the cut with cinnamon.
Joann
Reply With Quote
  #5  
Old 02-03-2011, 10:11 PM
Eyebabe Eyebabe is offline
Senior Member
 

Join Date: Apr 2010
Zone: 6a
Location: Pennsylvania
Posts: 1,474
Default

I would cut off the blackened leaf an inch into clean tissue as there are plenty of other green leaves.
I do not see any good roots on the plant so I would pot it up and keep it a bit on the dry side after soaking my media in some solution with KLN (one tsp per gallon).
Use a rhysome clip or tie it up to a stake for support.
Good luck
Reply With Quote
  #6  
Old 02-03-2011, 10:37 PM
BobInBonita BobInBonita is offline
Senior Member
 

Join Date: Jul 2010
Zone: 10a
Location: SW Florida
Posts: 320
Default

Did you purchase from a known grower or "joe's orchids and velvet paintings"?

A good dealer should exchange, replace, credit, or at least explain.

If it's a dealer, send them the pics and ask. You can try the same with "Joe's Orchids", but.....

Sometimes you get a deal and sometimes you get what you paid for. If there's no recourse, I would assume it's fungal (it may not be) and treat with a good fungicide, isolate from my other plants, and watch it. If the bad area expands, I would perform surgery and retreat with fungicide. If it continues to expand, I would cut my losses and move on. Sorry.
Reply With Quote
  #7  
Old 02-03-2011, 11:04 PM
orchideya
Guest
 

Posts: n/a
Default

I digged it out of the pot and it came apart into two pieces. One - larger one with new growth has a bit of roots, the other one - no roots. I cut off some black parts, potted bigger part with roots back into bark, and placed the rootless part into ziploc bag with sphagnum moss.
There are black spots on the new growth, so I don't know what will come out of all these manipulations. Will do what I can and hope for the best.
I think it was "you get what you paid" case and should teach me to buy from known dealers.
Thank you very much everybody for the valuable info.
Attached Thumbnails
Black spots on Cattleya leaves-cattleya-jpg   Black spots on Cattleya leaves-cattleya2-jpg   Black spots on Cattleya leaves-cattleya3-jpg   Black spots on Cattleya leaves-cattleya4-jpg  

Last edited by orchideya; 02-03-2011 at 11:14 PM..
Reply With Quote
  #8  
Old 02-03-2011, 11:20 PM
BobInBonita BobInBonita is offline
Senior Member
 

Join Date: Jul 2010
Zone: 10a
Location: SW Florida
Posts: 320
Default

Best of luck. We've all been there and done that. I picked up a plant at the Tamiami show last weekend that had tape over the bark and roots. I knew better, but "big show, big vendor". Didn't open it up thinking it would make it home without spilling bark. When I looked that night, the pot was full of white fungus. We all get carried away and have to keep reminding each other not to do what we all want to do "in the moment".
Reply With Quote
Reply

Bookmarks

Tags
black, cattleya, damage, leaves, spots


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

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
Cattleya aurantiaca with black spots under leaves Sandrilene Beginner Discussion 4 02-23-2010 11:28 PM
Black spots on phal leaves Dollgoldii Pests & Diseases 16 05-03-2009 10:52 PM
Cattleya type with black leaf spots dennis4246 Cattleya Alliance 9 11-10-2008 12:06 PM
Small black spots on my cattleya orchid Jonatan Beginner Discussion 3 06-17-2008 06:56 PM
BLACK SPOTS chet&gaylyn Beginner Discussion 15 10-11-2006 11:35 AM

All times are GMT -4. The time now is 12:28 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.