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University of Minnesota Extension
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Forest pests and diseases

Woodland owners and managers, learn more about common forest diseases and pests. 

Visit our yard and garden resources to learn more about keeping trees and shrubs healthy in home landscapes.

Use our plant diagnostic tools to identify potential problems.

Broadleaf tree pests and diseases

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Conifer tree pests and diseases

You may also be interested in the Christmas Tree Pest Manual from the U.S. Forest Service.

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