Hi - hoping someone out there can help: My 3 O. decaryi have developed a strange leaf-drop syndrome; they all came out of semi-dormancy vigorously 6 weeks ago (lots of new growth). About 3 weeks ago, they started dropping leaves. I found tiny white dots on the undersides of many leaves, but they're not mites (immobile) and not whitefly eggs (I checked under a microscope). And they're REALLY tiny. The leaves don't yellow, just turn dark, dessicate and drop off. I've sprayed with neem oil a couple of times, but the leaf drop is accelerating. Does any of this sound familiar? Any bright ideas? They're indoor plants in pots, BTW.

Thanks very much.

Andrew