cutting back peonies
My peonies have quite a bit of what I guess is powdery mildew. I'm not sure if peonies get that, but its some kind of white powder. They tend to get it during a rainy spring. Since it's done practically nothing but rain lately, it's not surprising they would have it. I'd like to rid them of this once and for all. Can I cut them back to the ground now, and spray the stems with some kind of fungicide? Perhaps a rose dust? Would this work, or does anyone have a better suggestion?