Masdevallia 'Angel Frost' Problems
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.

Masdevallia 'Angel Frost' Problems
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #11  
Old 07-22-2012, 08:17 PM
stonedragonfarms's Avatar
stonedragonfarms stonedragonfarms is offline
Senior Member
 

Join Date: Aug 2007
Zone: 9b
Location: Portland, OR
Age: 45
Posts: 1,220
Default

To me this looks like too much water and too high of heat; once the day temps go much over 85F on these, without constant air movement, shade and mist, you sort of just "cook" the roots. First the tips of the roots die, then the plant will start to shed its mature leaves (those at the center of the plant usually); next the leaves a bit further out will go and finally the new leads will succumb. Any newly developing leads will start to grow, but will just sort of stall out, especially if the conditions have been persisting. I'd say a good rule of thumb for the bulk of the masdevallia hybrids is to grow them somewhere in the 75-78F range as a daytime high (though shading, misting, heavy air circulation, etc. can aid with higher temps), with a 10-20F drop at night. They need a constant flow of fresh air around and over the leaves, pure water with low TDS and high humidity for optimal results.
Just my 2c,
Adam
__________________
I've never met an orchid I couldn't kill...
Reply With Quote
  #12  
Old 07-22-2012, 10:35 PM
AnonYMouse's Avatar
AnonYMouse AnonYMouse is offline
Senior Member
 

Join Date: Jun 2012
Zone: 9b
Location: SF Bay Area, CA
Posts: 2,312
Default

Quote:
Originally Posted by stonedragonfarms View Post
To me this looks like too much water and too high of heat; once the day temps go much over 85F on these, without constant air movement, shade and mist, you sort of just "cook" the roots. First the tips of the roots die, then the plant will start to shed its mature leaves (those at the center of the plant usually); next the leaves a bit further out will go and finally the new leads will succumb. Any newly developing leads will start to grow, but will just sort of stall out, especially if the conditions have been persisting. I'd say a good rule of thumb for the bulk of the masdevallia hybrids is to grow them somewhere in the 75-78F range as a daytime high (though shading, misting, heavy air circulation, etc. can aid with higher temps), with a 10-20F drop at night. They need a constant flow of fresh air around and over the leaves, pure water with low TDS and high humidity for optimal results.
Just my 2c,
Adam


Been there, done that.

What I learned about growing masdies in intemperate climates (for them, anyways) is to avoid saturating the medium (sphag) just prior to and during hot spells. Keep them just shy of dry for the duration (your milage may vary). Hot spells for me usually only last a couple of days but can be as long as a week. Regular misting with good air circulation will provide an evaporative cooling effect. A humidity tray with gravel (I use lava rocks) will add more surface area for the effect. Ceramic and net pots work better for me than regular plastic pots.

Another factor may be the type of plant. I've found that compact growers succumb to this more easily.

My advice is to check the sphag. It will develop a faint but distinct smell not normally present and may grow a slight gray cast.

I recently flushed the media without checking the weather forecast. I moved the affected plants to where they get a strong fan breeze and crossed my fingers.

Last edited by AnonYMouse; 07-22-2012 at 10:38 PM..
Reply With Quote
  #13  
Old 07-24-2012, 10:37 PM
isurus79's Avatar
isurus79 isurus79 is offline
Senior Member
American Orchid Society Judge
 

Join Date: Sep 2007
Zone: 8b
Location: Austin, Texas
Age: 41
Posts: 8,840
Default

What type of water do you use? I doubt this lead to your rapid leaf drop, but using tap water is usually not recommended. Any recovery might be hampered by poor water. Just a thought.
__________________
Pics on Flickr

Instagram

YouTube
Reply With Quote
Reply

Bookmarks

Tags
angel, frost, leaves, masdevallia, started


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
Masdevallia angel frost Luis Renato Pleurothallis Alliance 10 02-16-2013 08:48 AM
Masdevallia Copper Angel - 2010 - novas fotos Wolf Pleurothallis Alliance 4 10-24-2010 04:07 AM
Masdevallia Falcata x Masdevallia Angel Frost joule Pleurothallis Alliance 8 02-02-2010 11:41 PM
Masdevallia Angel Frost ronaldhanko Pleurothallis Alliance 3 05-27-2009 11:49 AM
My orchid list......... Bolero Orchid Lounge 9 05-22-2008 06:24 AM

All times are GMT -4. The time now is 07:17 AM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.