I have become intimately aware of p.m. and what is causing it and what affects chemicals have on it. I have gone with nothing but organics and have survived the Halestorm of white powder. I use potassium, bicarbonate or hydrogen peroxide on my flowers and leaves and I’m very happy with the results. I live down in the swamps of Florida so there’s not much you can tell me about p.m. that I’m not aware… it would be nice to think that both of us have overcome that problem but I CPM on one of my plants and veg, a very light dusting, but it’s