It has now been three weeks since spraying with sulfur; lets discuss what to expect. First there has been zero phytotoxicity; there has been no leaf drop even on the tenderest of new growth on any plant. At first the smell of the sulfur is kind of overwhelming, but over time it will dissipate somewhat. Still in the morning when I first open my tent, because of the high humidity, I have to wait a few minutes before entering as the sulfur smell is pretty intense.