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Spots on maple tree leafs #425831

Asked September 08, 2017, 2:23 PM EDT

I was at my daughters house that she just moved into and saw these spots on the maple tree in her front yard. What is this and can it be treated?

Livingston County Michigan

Expert Response

This is Tar Spot of Maple. Here is information on Tar Spot: http://msue.anr.msu.edu/news/black_polka_dots_on_maple_tar_spot

An Ask Extension Expert Replied September 08, 2017, 3:47 PM EDT

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.

Spots on maple tree leafs #425831

Expert Response

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