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Black Spots on Soft Maple Leaves (WI)

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From: James Wagner
Wauzeka, WI
I have a soft maple tree that has some of the leaves turning black with holes in them. I can't see any bugs or anything. Any ideas what it is or what I can do? I have other hard maple trees with no leaf problems.

Thanks, Jim

Extension Message
From: Jay Hayek
Extension Specialist, Forestry
Department of Natural Resources and Environmental Sciences
Hi Jim:

Sounds like "Tar Spot" to me. Here is a link from Purdue University regarding symptoms and control.

Control is pretty simple: rake leaves during autumn and burn/remove them from your property.

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