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FOR308: Thousand Cankers Disease: A Threat to Black Walnut in Florida

Figure 1. Thousand cankers disease has been reported in western and southwestern United States and in Tennessee, Virginia, and Pennsylvania. As the disease spreads eastward, it threatens eastern black walnut in its native range, which covers all or parts of over 30 states, including a portion of north Florida.

Credit: Image from USDA Forest Service, Forest Health Protection, 2011.