H
Highlander
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I finished cutting some plants today and I notice a set of lower buds have a powdery mildew outbreak and I have sprayed with potassium bicarbonate but never post harvest.... IS IT SAFE TO SPRAY POTASSIUM BICARBONATE POST HARVEST?? on my bottle of potassium bicarbonate it says it is usda approved and you can spray fruit and tobacco post harvest so does that apply to marijuana? anyone ever try this method? or does anyone have an alternative method to treating PM post harvest?