Maple Leaf Tar Spot Disease hits Michigan trees hard.

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Kimberley Willis
Detroit Gardening Examiner

Trees have been on the minds of many Michigan gardeners this year. It seems like our landscape trees are under assault from all directions. A new problem that is cropping up across Southeast Michigan in maple trees is not, however, a major catastrophe. Many maple trees are loosing leaves early, and many of those leaves are marked with large black spots, which look like someone splashed paint or tar on them. The name for this condition, Maple Leaf Tar Spot Disease, actually reflects that.

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