How to clear it out of pots: spray lightly with Monuron (Karmex W, or, Telvar) at two tablespoons in three gals.; do not use Monuron on fast-growing cymbidiums and epidendrums. A79-584 see also Simazine 80W
Use Karmex W(Monuron) 2 level tblsp. per 3 gals. water or 2 tblsp. Karmex DW(Monuron) in 2 gals., or 1 ttpg. Princeps-80; keep spray off leaves; don't water for 3 days. A72-905; A76-795; A77-108; OWD