I had PM in my last grow. Seemed to only affect 2 plants at first. Sure enough it spread to every on in that tray and took out 85% of my bud. The seemingly unaffected plants looked fine up til theday of harvest. Noticed during harvest that every single bud had a layer of mold on it. Some worse than others but shit, who wants any mold period on their bud. Was so bummed...
Decided never to let that happen again. Take veging way more seriously now. Einstein oil sprays every 3 days at half dose then in increasing amounts. Quit oil 2 weeks before flower so I can give them 3 or 4 sulfur burns after first week of flower. So far so good. No PM and I'm in week 7. What a difference in growth between an infected plant and one that is not.
BTW, I tried the sprays (except
Green Cure, hear that stuff is good) and it always came back. Once it gets a foothold you're pretty screwed.
Eagle 20 only in veg. Hear that stuff is pretty toxic. Thinking of trying it so I don't have to spray so much. The spraying though also helps to deters spider mite infestations so maybe I'll stick to my regimine.