Catasetum pest / condition - help

[glengary54]

Originally Posted by jdw

I'm new to this board, so pardon errors. I frequently use the help file to find out how to do things here. Attached should be a pic of the leaf with bumps.

I realize the web security is important and a double blind interface like this board is important, but I can send the attachment directly if you provide email.

Regards,

John

John,
Looking at your photo reminds me of a similiar problem that I had a number of years ago. My catasetums had already leafed out and we had a prolonged period of cool and damp weather move in.

I remember bumps similar to those in your photo appearing. I thought nothing of it at the time much to my chagrin. Within a few more days those bumps had turned into oozing blisters and the leaves died.

I sent a sample to a local lab to have it analyzed and it came back as the fungus Cercospora epipadidis.

I can't be sure that is your problem but I would recommend that you fungicide your growing area just to be sure.

Glen

[Junebug]

A catasetum I purchased a couple of years ago was delivered with blister like things all over the leaves. My leaves looked just like the ones in you photo. There were no bugs and the blisters never popped. The leaves remained green and all future growth was normal and healthy and the plant spiked and bloomed. I never thought about a fungus at the time and assumed the blisters were caused by summer heat during transport. I still have the plant and it's still healthy.

[Lars Kurth]

Mine looked exactly like this, except that the bumps turned into brown blisters. Also brought in by cool and damp weather. Probably Cercospora, so I will spray with fungicide

[kavanaru]

I can only agree... go for fungicide! better if systemic!

[jdw]

Looks like we've reached consensus. Thank you all for the time and advice. I've sprayed with Physan 20 - that's what I used when deflasking seedlings. I'll look for something systemic.

Thanks again!

[isurus79]

Originally Posted by jdw

I have a tiny bumps appearing on leaves of my After Dark and a Donna Wise x Susan Fucks. There are also a couple of very small spots. The After Dark is starting to droop. I moved it to higher light and put it closer to a fan. So far my treatment has been a spray of Bayer 3 in 1. I know mites are usually the culprit, but I don't see progress. Any ideas? this is only my 2nd season growing these.

Your ideas are welcome!

Sorry I can't comment on your Catasetum bumps, as I've never seen that before. However, FYI- Its Donna Wise x Susan Fuchs. You spelled it slightly differently.

[jdw]

Little green bumps...and some brown spots.
What is this? Do you still think fungus? I used Bayer 3-n-1 last weekend.

[Junebug]

Originally Posted by jdw

Little green bumps...and some brown spots.
What is this? Do you still think fungus? I used Bayer 3-n-1 last weekend.

Heat or too much sunlight maybe?

[jdw]

Nope. Temps not more than 85.
I did see that with masdevellia in the spring.
Light meter is good. Could actually use a little
More or brighter a little longer.