| What Mayres says - Sounds like spider mites. Spray the plants with an insecticide that works on mites, making sure to get it on the undersides of the leaves where the mites hang out. Then keep the plants outdoors (unless it's below freezing where you live) and spray them hard with a hose whenever you water. You will probably want to reapply the insecticide a couple of times at 1-2 week intervals to make sure you get the mites as new ones hatch out. The spider mite problems that I've had have mostly been on non-orchid plants (hibiscus, palms, etc). As soon as I've put the plants outdoors, the spider mites have disappeared as if by magic. |