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Echinacea disease - Ask Extension

I tried to identifylthis from the website, I could only find powdery mildew and septoria leaf spot, neither of these show twisting of the leaves. I w...

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.