Terrible leaf spots: Concentric circles
 

Last month, a severe storm knocked out power, so my orchids cooked in the stuffy 100 deg heat for a couple of days. No air conditioning, no fans. It was terrible--some of orchids died immediately, while others languished and declined slowly.

Two of my orchids exhibited strange leaf spots reminiscent of viruses. One is a cattleya hybrid clone and another is a Brassia rex. The spots are mostly on the new leaves.

I know the only way to know for certain is to send leaf samples to a lab, but these plants aren't worth the time and money. Right now, I've isolated them and have been spraying with physan. I'm deciding whether to cut off all affected leaves or to pitch them (which I am reluctant to do, since I've had the plants for a while). What do you think?

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What would I do? Definitely isolate them from the rest of my collection, probably on another floor, each in a very large zip-lock bag. Take all precautions. I have one that spent a winter like this and now a summer. As the growths are growing abnormally slowly, I think it will be tossed this fall. It was a very nice orchid, bloomed twice a year, an aclandiae cross (great scent), so I gave it the benefit of doubt but the slow growth, to me, is telling.