Oh, Melanie that is too bad! They do usually recover from sunburn, though. (the Voice of Experience speaks here . . . ) so don't cut off the leaves just yet. As long as they have some green healthy tissue, they still are making food for the plant. Let the leaves with the burns dry out if you can (under the roof overhang?) and just water the medium on those guys for a few weeks.
I've had both black rot and scale problems this summer. What a headache! Have had good results with Bayer 3-in-1 that has Imidacloprid in it for both the scale and rot. Have sprayed a couple of times with Physan (it takes the algae off the pavers around the orchids, too. Very nice) and every time I see any hint of black I cut it off right away and sprinkle the whole surface of the medium plus the cut generously with cinnamon. The cinnamon seems to deter the accursed snails, too! So far have not lost any plants, but probably a dozen leaves and a few pb's. I did lose a phal while I was away, and there's no sign of rot, so I have no idea what happened to him.
It did rain a little bit last night and another sprinkle just now, but my babies are drying out some, so that will help to quell the fungal growth hopefully. Less rain chance for the rest of this week, Yay!
but I've nabbed at least 10 since Saturday. One was way up high on a branch of the 8ft. tall brug - I was really wondering what was eating those leaves up there.
