Maple tree shoveled leaf with black coloring drop
We have gotten a number of reports on maples losing large amounts of leaves. Two diseases of maples have been prevalent this summer -
Anthracnose and Phyllosticta leaf spot. These are not serious diseases and no treatment is necessary. The wet summer we experienced most likely has something to do with this. We would be happy to look at photos of the leaves for you. You can attach them to this response to your question.