| Linda, how varied is your collection? Any terete leaved plants like the Papilionanthes, particularly vandarum, and Schoenorchis juncifolia? My vandarum, originally a big bushy plant, is now 4/5ths dead and very weak after several treatments with neem, not recognizing the problem as I went. I've killed 2 juncifolias so far, and the third one is being watched very carefully for signs of adverse reaction to any chemicals I use.
It may well be that I am getting mistreated neem from my suppliers. Can't think of any other reason for the string of problems I've had. But I am not the only orchid grower up here in Prescott that is convinced the neem is causing the mottled leaves.
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Cynthia
Prescott Orchid Society  |