USDA. FS. Northern Research Station.
Select the non-indigenous forest pest to view maps depicting state and county distribution. Produced by: USDA, FS, Forest Health Protection, and its partners.
University of Vermont. Forest Pathology.
New Hampshire Division of Forests and Lands.
European and Mediterranean Plant Protection Organization.
Natural Resources Canada. Canadian Forest Service.
Nature Conservancy. Don't Move Firewood.
IUCN. Species Survival Commission. Invasive Species Specialist Group.
Ontario's Invading Species Awareness Program (Canada).
University of Georgia. Center for Invasive Species and Ecosystem Health.
CABI. Plantwise Knowledge Bank.
Forest Gene Conservation Association (Canada).
University of Wisconsin- Extension.