Quote:
Originally Posted by Rinzo
they all have viruses right?
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No one can tell you just by looking, they have to be tested for that, as others have said.
Looking at your pics I would think you have a cultural thing going on be it light or medium. The Dendro looks like its potted in soil and the Phals sphag doesn't look good & neither do the roots.
* When was the last time you repotted?
* Have you checked the roots on these plants?
* How often do you water and when you do is the medium almost dry? You should be checking the center not just the top.
* Have you moved the plants recently? Are they receiving more /less light now than in the winter months?
* Temperature, Are they warm enough?
Rotting roots will cause your plant to put all of its energy into the newest growth leading to discoloration and possibly/ more than likely losing the lower leaves.
Receiving more or less light will do the same. Sunlight is stonger in the spring & summer so what worked during the winter may not be appropriate for them now.
I'd start by checking the culture first, if all is good then start worrying about disease or virus. But the only way to know for sure is to have them tested.
Good Luck
Judi
http://www.orchidboard.com/community...ends-here.html
---------- Post added at 08:26 AM ---------- Previous post was at 07:26 AM ----------
If you decide to go the testing route, you can send samples here:
Critter Creek Laboratory
Or to do testing at home order tests here:
https://orders.agdia.com/InventoryD....K+13301&loc=IN
This shows how to do and what to look for:
https://orders.agdia.com/Documents/m250.pdf
Judi
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