Help

Wpm 3 weeks until harvest what will keep it at bay with minimal damage ?

A dehumidifier and if its bad a sulphur burner.

Got humidity under control sprayed sm90 but just seems to come back after about a week or as soon as it bounces back from spray

I don't think SM90 is for PM. I rotate through these 3 products, spraying one of each most days: Actinovate, diluted H2O2, Green Cure. All safe during flower and I keep spraying all the way to harvest so it does not come back on the dry line. No big deal.

I've never tried green cure. I know the hydrogen peroxide/water works petty good.