MASDEVALLIA problems. Help!

[King_of_orchid_growing:)]

Well...

Andy's gets his from Ecuagenera. Plants from Ecuagenera need to be treated thoroughly before introduction into the collection.

You might wanna try disinfecting them. They could be relatively recent imports or if they've been with Andy's for a while, they could just have had some die hard spores. Not sure which of the two scenarios it is, but it doesn't hurt to disinfect your plants.

Andy's mounted plants also tend to have quite a lot of moss on the mounts too. You may want to consider taking a look at the roots to see if they're not rotted out.

You don't mention how long you've had the Masd decumanata for, but I think it's important to mention it so I can sort of gauge where some issues may lie.

I'd also like to know how often you water these guys too.

Another thing that might help is a photo. Without a photo, this is the best guess I can really make.

I have Masdevallias that come from similar elevations as the Masdevallia decumana and they're doing superbly well outdoors here in SoCal. They are potted though. Yes, they are also disinfected.

The ones that come from slightly higher elevations are the ones that are really suffering for me right now.