LOL!!!! Oh, that's horrible!
I couldn't help you one way or another with powdery mildew.. never seen it and probably won't either. Not something that we have here. Dunno why. Guess I'm lucky that way.. don't have mildew, don't have Japanese beetles, don't have midges..
*shrug* :)
Oh, and according to my weather page (WUnderground.com), I have -999% humidity right now, so it's pretty gosh-darned dry. gah, all the smilies are broken!!!