Q.butterfly bush
why does my butterfly bush have leaves with what looks like mold on them?

DLarum
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on June 5, 2017
Butterfly bushes can be prone to powdery mildew. This article should help
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm
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