May I ask for a little guidance? I'm usually on the rose, grasses and classic threads forums, but I have a problem I cannot find the answer to on this forum, a Google search, or the Heartland Peony site. My peony buds are exhibiting a thin brown coating, as you can see in the picture. Last year it was only Ann Cousins, but this year it is all of them (Festiva Maxima, Kansas, Cornelia Shaylor, Mrs. FDR, and Ann Cousins). Once the peonies open they seem fine, but the coating is unsightly. I sprayed "Ann" with a fungicide but it made no difference. I also peeled the coating (VERY CAREFULLY) from some, but if anyone could give me some guidance on what causes it, and prevent it, I would be very grateful.