NYSSA DISEASES

By The Old House Web

NYSSA DISEASES


Several fungi cause cankers on sour gum. As the cankers enlarge the infected stems die back. Trunk cankers cause tree die back. There is no chemical control. Prune out infected branches and keep trees healthy.

Leaf spot caused by Mycosphaerella nyssaecola symptoms are purplish blotches which enlarge. The spots are on the upper leaf surface. Rake up and destroy infected leaves in the fall.

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