Not the oil. The reason I used the oil and soap was to try to fend off
whatever is going on with them. And it wasn't hot enough to do any damage
anyway. I guess I'll try Physan in the morning. It still strikes me as some
kind of mite, but I can't see anything, even with a mag glass.

Diana

"K Barrett" wrote in message
. ..
Was it the oil? Could they have fried? Otherwise I'd go with some sort of
rot. Hawaiians have been known to lose entire crops of Dendrobiums
overnight. Unless its Steve's creeping crud.

K Barrett

"Diana Kulaga" wrote in message
...
Well, we have a little problem here. Walked out on the patio on Friday
morning and saw severe damage to a number of Phals. Mind you, seeing them
every day is unavoidable, so I can assure you that these probs were not
evident the day before. Clearly, something had been in the works, but I
hadn't noticed.

The leaves are turning yellow starting at the outer edges. The under
sides of the leaves look moldy and pitted. Some of them have what look
like sunken areas on the top of the leaves, but those are not soft. There
is no sign of snails/slugs, and those things would be unlikely to find
them where they live. There is no big web infestation, so I don't think
it's spider mites. My guess is some kind of mites, however. Saturday we
sprayed everything (*everything*!) with soap and oil with some alcohol
thrown in for good measure - 6 tb/gallon.

Pictures going up in abpo in 1 minute. I'm really worried. Here I teach a
class for newbies, and look what I've got.

Diana