Thanks, Aaron.

I suspect my climate is simply unsuitable for growing cymbidiums,
unfortunately now that I have four. I'm not doing well with paph
type dendros, either.

Indoors, I have an ultrsasonic humidifier and east, west and south
facing windows. I'd like to try some other types of orchids, but don't
know which yet. Suggestions are welcome!

Debi

"Aaron Hicks" wrote in message
...

Neem oil is very safe, and is effective on spider mites.

Ultimately, determining the source is important; in the
greenhouse, there are usually mites present- but they are kept in check by
predators. It's when we put things out of whack with a spray program that
perpetuates itself that it becomes a wave-like problem.

Ultimately, low humidity fosters the growth of mites by making it
hard for the predators to survive. Mites can do quite well in high
humidity- even in areas with condensed moisture!- but if the predators are
present, the mites will be decimated.

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-AJHicks
Chandler, AZ