For an organic fix you can try buttermilk. Just dilute it 50/50 with water.
Joshish Reviewed by Joshish on . Powdery Mildew prevention help. hey fellas, I need a recommendation for a powdery mildew cure or prevention. I need something that is ok to use in the beginning stages of flowering, buds arent that big but they are there and i dont want to hurt them. I bought some neem oil spray, but i just found someone on a forum saying that neem oil is not good to use on flowering plants. Is this really true, particularly for the early stage? I'd really appreciate if someone can chime in with some experience. Need to figure this Rating: 5