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My maple trees are sick, is this anthracnose? #900456

Asked May 07, 2025, 1:07 PM EDT

Hi, Several of our maple trees have many (if not most) leaves affected, is this anthracnose due to the wet cold spring? Foliage photos are difficult, but I'm including them. Symptoms are shrivelled leaves and dark spots/streaks. Thanks for any information! I believe most of the pics are the sugar maple (at least I think it's a sugar maple), and I think the maple behind our garage is silver or black maple, it's affected as well. Jan House Lebanon, Ohio <personal data hidden>

Warren County Ohio

Expert Response

That does appear to be Anthracnose. The conditions have been perfect. No big deal. Those leaves may fall early but maples make more than enough leaves to do what they need to do. Treatment is not recommended and would be useless because the infection already occurred and the tree is much too large for full coverage with a fungicide.

Greg Meyer
Ohio State University Extension
Warren County
An Ask Extension Expert Replied May 07, 2025, 2:04 PM EDT

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