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Powdery mildew? - Ask Extension

Hello. I’m noticing what I think is powdery mildew on my Beebalm. I usually don’t see that until the fall. Is it because of all the rain we’ve h...

This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.