Bulbophyllum Stramineum black spots on 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.

Bulbophyllum Stramineum black spots on leaves
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 12-05-2021, 07:40 AM
LaCucaracha669 LaCucaracha669 is offline
Jr. Member
 

Join Date: Dec 2021
Posts: 16
Bulbophyllum Stramineum black spots on leaves
Question Bulbophyllum Stramineum black spots on leaves

Hello everyone,
I just bought one week ago this orchid beside another Bulbophyllum(Rotchildinum)
When i woke up this morning I could noticed these black spots on its leaves, and one of its leaves turned yellow.
What can it be?
I must say that its grower divided it a day or two before he gave it to me(Can it be trauma?).
The weather is around 21c and i provide my orchids around 70% humidity till night.
The other orchid which got divided as well was the Rotchildinum which is totally fine, his leaves are green and it looks nice.
What could have gone wrong with the Stramineum?
Thank you!
Attached Thumbnails
Bulbophyllum Stramineum black spots on leaves-6136e94d-a5af-4bf7-be44-4d9f6769ecc4-jpg   Bulbophyllum Stramineum black spots on leaves-38b4450f-25d3-46a5-bb2f-5f77c1f640f8-jpg   Bulbophyllum Stramineum black spots on leaves-0ed7561d-ff9e-48f5-9b94-aef31dfff69f-jpg   Bulbophyllum Stramineum black spots on leaves-e63f332d-767c-4141-b58d-e121bc9261da-jpg  
Reply With Quote
  #2  
Old 06-22-2022, 10:26 PM
sunfire sunfire is offline
Senior Member
 

Join Date: May 2022
Zone: 6b
Location: Pennsylvania
Posts: 103
Bulbophyllum Stramineum black spots on leaves
Default

How did your plant turn out? I have just experienced something similar and am a little stumped.
Reply With Quote
  #3  
Old 06-23-2022, 04:21 AM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 17,755
Bulbophyllum Stramineum black spots on leaves Male
Default

I'm sorry, I didn't see this question when posted in December 2021.

Bulbophyllum stramineum is now considered a synonym and the correct name is Bulbo. cummingii. You might find more information with that name.

The first thing I see is the plant is very dessicated and wrinkled. The leaves and pseudobulbs should be smooth and shiny when well hydrated. It is in large bark, and it is very dry. When Bulbos get dessicated they get large black spots, and entire growths may turn black. I think this is the problem with the plant in the picture. It looks like a rot but instead this is how Bulbos act when too dry.

Bulbos of all sizes have much thinner and shorter roots than other orchids. This means they take longer to absorb water than do many other orchids. They expect to be very moist to wet, and the roots should not dry out for any length of time. I wouldn't try to grow them in large bark; I prefer sphagnum moss, which I keep always wet. Some people grow them in fine bark. But the roots should always be moist.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
Post Thanks / Like - 1 Likes
Likes sunfire liked this post
  #4  
Old 06-23-2022, 02:04 PM
sunfire sunfire is offline
Senior Member
 

Join Date: May 2022
Zone: 6b
Location: Pennsylvania
Posts: 103
Bulbophyllum Stramineum black spots on leaves
Default

If one had received a bulbo that was very desiccated and the leaf should do this after appropriate potting and providing ample moisture, what to do about it? Okay to wait for the leaf to fall off? Remove it? What about the pseudobulb it is attached to? It all a goner or can it recover in time?


Quote:
Originally Posted by estación seca View Post
I'm sorry, I didn't see this question when posted in December 2021.

Bulbophyllum stramineum is now considered a synonym and the correct name is Bulbo. cummingii. You might find more information with that name.

The first thing I see is the plant is very dessicated and wrinkled. The leaves and pseudobulbs should be smooth and shiny when well hydrated. It is in large bark, and it is very dry. When Bulbos get dessicated they get large black spots, and entire growths may turn black. I think this is the problem with the plant in the picture. It looks like a rot but instead this is how Bulbos act when too dry.

Bulbos of all sizes have much thinner and shorter roots than other orchids. This means they take longer to absorb water than do many other orchids. They expect to be very moist to wet, and the roots should not dry out for any length of time. I wouldn't try to grow them in large bark; I prefer sphagnum moss, which I keep always wet. Some people grow them in fine bark. But the roots should always be moist.
Reply With Quote
  #5  
Old 06-23-2022, 03:55 PM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 17,755
Bulbophyllum Stramineum black spots on leaves Male
Default

A severely dessicated growth in any orchid sometimes will return to normal appearance with proper watering, and sometimes will not. More important will be whether new growth develops normally.

I don't remove old plant parts until they're completely dry and brown.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
Post Thanks / Like - 1 Likes
Likes sunfire liked this post
  #6  
Old 06-23-2022, 08:00 PM
sunfire sunfire is offline
Senior Member
 

Join Date: May 2022
Zone: 6b
Location: Pennsylvania
Posts: 103
Bulbophyllum Stramineum black spots on leaves
Default

Okay. Thank you!

Quote:
Originally Posted by estación seca View Post
A severely dessicated growth in any orchid sometimes will return to normal appearance with proper watering, and sometimes will not. More important will be whether new growth develops normally.

I don't remove old plant parts until they're completely dry and brown.
Reply With Quote
Reply

Bookmarks

Tags
black, divided, leaves, orchid, spots


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
Phalaenopsis hybrid yellow and fallen bottom leaves, black spots on top leaves keishiakei Hybrids 2 10-29-2020 08:34 AM
Zygopetalum with weird black margins on leaves and black spots Syngonia Pests & Diseases 12 10-08-2020 02:57 AM
Large black spots on Twinkle leaves Reeses Pests & Diseases 2 05-19-2016 05:03 AM
Black, firm, raised spots on leaves of unidentified orchid petitchouchou Pests & Diseases 2 02-08-2011 06:19 PM
Black spots on Cattleya leaves orchideya Beginner Discussion 7 02-03-2011 10:20 PM

All times are GMT -4. The time now is 03:38 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.