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This is a discussion on Cattleya maxima alba - retrieved from the nursery and what is this? within the **NOT IN BLOOM** All Genera forums, part of the Orchid Photography category; So, I visited my orchids at the nursery where they've been boarding since October, and ...
So, I visited my orchids at the nursery where they've been boarding since October, and a few were in bloom, a few others clearly HAD bloomed beautifully, and for the most part, they're in good shape. With some notable exceptions and this is one of them:
This is a C. maxima v. alba that has such a pedigree that it cost much more than the average - it's from the Orchid show last year, and, obviously hasn't bloomed yet.
It looks really bad, but there's some new growth and some beautiful green new roots pushing out.
What is wrong with this plant? Should I toss it? Is it salvageable? If so, How? Do I cut all the affected leaves off?
I NEED SOME ADVICE!!!!
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I've never seen anything quite like that. The indented leaves are probably cell collapse secondary to some bacteria or fungus problem. For starters I would spray the plant once a week with Physan 20. It has anti-bacterial and anti-fungal properties. Beyond that, I would isolate it and give it some good growing conditions and see what happens. There is a condition called mesophyll cell collapse that can be caused by using very cold water on the plants or a sudden drop in temperature. There's a chance it might just be that rather than any disease process. Good luck.
Thanks, Jeff - I've actually had it soaking in a dilute solution of Physan for the last 20 minutes. I hadn't ever seen anything that looked like this, either. I don't mind doing the research - and the treatment is probably much the same no matter what it is - unless someone flags it as a virus threat - in which case it goes into the trash.
I will go with Jeff. It also looks salvageable. Focus on the new growth
Mesophyll collapse from cold stress was my first impression, and new growth should be healthy. Otherwise bacterial or fungal involvement should continue to spread. Could be the kind of viral damage that only shows up when the plant is stressed, like by cold. Isolate and watch it closely and give it some time. Physan should at least help prevent something moving in and growing on the damaged tissue.
Thanks, guys - got it, and I'm going to repot it in fresh medium while I'm at it -- I really hope it makes it.
I am sure it is cultural, not viral. Looks like cold damage to me.
But patience will be necessary ; I have an awarded plant of Paph Susan Booth which got badly frosted in 1996 I think it was, but three or four smallish growths survived, and I have been growing it on ever since, expecting and hoping that it will get back to flowering condition, but it has not made it yet.
How long should I carry on the struggle ? Maybe I'll I'll give it another few years... but if I happen to see the same thing on offer, I shall buy and quietly dump this one. The point is that the plant is ( at present) irreplacable.
If it were just another hybrid I would have recycled it on the compost heap years ago ( not that orchids do recycle ) I can dig out the garden compost heap after a couple of years and find orchid plants which don't seem to have even started to decompose !