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Maple Tree Spots - Ask Extension

We have maple trees in our backyard and a lot of them have these black spots on the leaves. Is this normal? Do we need to do anything?

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.