Quote:
Originally Posted by estación seca
There might be mite damage, but I also wonder about dissolved minerals in the water, high temperatures and low humidity. What are your growing conditions for these? Temperatures? Relative humidity? What kind of water are you using, and how often?
I treat mites with either 70% alcohol spray or a weak soap solution. Cover all exposed surfaces and the top of the medium. One might argue that for more delicate plants like these an insecticidal soap (potassium soap) would be better than dish detergent (sodium soap or detergent.)
Mites are uncommon with high humidity and cooler temperatures. They like low humidity and high temperatures. A weekly spraying of water will keep them under control. Most terrariums with a misting or spray system don't have spider mite problems because of the high humidity and frequent wetting of the plants.
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As a newbie to the orchid world, these types of postings are invaluable. Thank you to the posters and to the forum.
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