It’s not bad to use sulfur (I do). You have to wait about two weeks and then you can put the plant in flower and you can’t use it again anywhere in flower.
For PM eradication I use Dr. zymes eliminator, micronized sulfur, purecrop1, and og biowar foliar pack. Pm will come back if the grow environmental is shitty/dirty, always
2 Likes
THIS.
Dead plant material and/or not cleaning between cycles is a surefire way to encourage PM and other pathogens.
The spores go everywhere.
I also read, in the article linked above, that heating a room above 103F for a few hours will kill off both PM and mites! No real supporting studies for that, either, but it could be worth a shot if one is hesitant about chemical treatments.
2 Likes