Caliverner
Well-Known Member
Green clean works very well
Can't get rid of powdery mildew
- Thread starter father nature
- Start date
Cut out the infected leaves as best you can then hit it with a potassium bicarbonate, neem oil, dish soap solution, heavy spray not just a misting. Im sure some folks will say not during flower, but you don't have much to lose. After harvest bath them in an h2o2 solution and make bubble hash.
Bosgrower
Well-Known Member
I disagree - he has his whole harvest to lose. His bud formation is past the point where you can just try stuff and hope it works. You will end up ruining the buds instead of saving them. If you can knock down the outbreak with H₂O₂ you may loose some bag appeal but your harvest will be smokable. If some of the PM hangs on till harvest, you can always wash the buds with H₂O₂.
waterproof808
Well-Known Member
You should have cut those infected leaves off as soon as you notice them. PM does not produce aflatoxins like botrytis does, its mostly an allergen. Spraying a cocktail of different shit like some people have suggested will be more harmful to smoke than the PM itself, especially neem oil and whatever the fuck is in your dish soap.
Why would he lose his harvest? I found Potassium Bicarbonate + Neem Oil works far better than H202. The Neem Oil works as a suffocant and the KHCO₃ kills the mold on contact. My backyard backs onto a greenbelt, the forest is literally covered in PM. This is first season in 3 years I'm going to harvest with PM under control. H202, milk etc all failed me in prior years, Silica + the above made the biggest difference.
So you're saying PM is less toxic than a little soap and Neem?
waterproof808
Well-Known Member
PM is a type 1 allergen...it can cause a reaction in people with certain allergies but otherwise is not toxic. Obviously, PM is undesirable on your weed and makes your dried flower unsellable but it can be removed when making concentrate a lot easier than neem oil can.
father nature
Well-Known Member
I'm just using milk and Potassium Bicarbonate for now. I picked up H202 to work into the rotation if the other doesn't work All perfectly healthy. We just had a quick change to cool dry air for the next 10 days at least. I'm hoping the combination keeps it under control.
