Q.powdery mildew
what is the best treatment for my established peonies? they are getting a powder like fungus

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on July 26, 2020
This article should help:
https://www.gardeningknowhow.com/ornamental/flowers/peony/powdery-mildew-peonies.htm
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