Best Treatment for Powdery Mildew?
OK, this seems like a basic question, but I don't get much PM in my area, usually just a lot of blackspot. But its been fairly dry lately and very warm with warm nights, humid but not raining. I'm starting to see some PM starting on a few bushes. What are your preferences for treating it? I use Bayer Advanced Disease Control for blackspot but I don't think it eradicates the mildew very well. What about baking soda and water? Any good? If so, what consentration level? What about commercial sprays? What are the best?