Since I am at the end of a lot of bloom cycles, I have decided to do a preventive spray with Avid. I have picked off all remaining blooms and buds and am ready to spray. Nowhere can I find whether this pesticide has a residual effect. I assume so, but you would think it would say so.
Any way, I am going to add some Rid shampoo as a wetting agent. Now all the directions just say 'spray'. Do I need to spray the underside of the leaves plus the top side, or just the top side? Do I spray lightly or really drench it? Since it doesn't appear as though there are any critters, do I need a follow up spray?