powdery mildew on peonies
Last year one of my peonies was covered in powdery mildew. I cut it back to the ground and removed all the dead leaves. It has come back this year. Now this year my very large plant in a sunny location at the other end of the yard is covered with the stuff. I have frantically sprayed it with a multi garden fungicide/insecticide. It is in a dry sunny location. The other plant which has been doing quite well in a shaded location at the other end of the yard is also showing signs of infection to a much lesser degree. There is no cross contamination as we haven't even touched these plants for a couple of months. What is with the peonies. Haven't had this problem up until last year. My hand is sore from spraying from the hand held sprayer. Is there any spray designed specifically for this type of infection that my husband can use in our fruit sprayer? My large plant is a beauty and I would hate to lose it. Help!!