Does anyone have experience, hopefully positive, using systemics on
orchids? I am at my wit's end spraying Neem and insecticidal soaps for
scale. Now mealies are beginning to show up as well. Getting very close
to making a large trip to the compost heap (if the snow ever melts) and
going back to ferns and begonias.
Most of the problem children are phals potted in either soil-less mixes
or moss. I suspect no systemic would work in a bark mix.
I have a fairly old (20+ years) can of DiSyston granules(Disulfoton
Diethyl ethyl phosphordithicate) that I've used on other soil based
plants with some success. Cannot find any indication of use for orchids
and there isn't much on the web. From what I've found, it may even be
banned in some places. Not sure what else may be available, but I'm
hoping something works.
Appreciate any input anyone has.