University of Maryland Extension

Thousand Cankers Disease of Walnut

Author: 
Karen Rane, Director, Plant Diagnostic Laboratory

Thousand Cankers Disease found in the Mid-Atlantic

A newly described insect/fungus complex, called thousand cankers disease, has been responsible for the death of thousands of black walnut trees in the western U. S. for at least a decade. In the summer of 2011, the disease was confirmed for the first time in Virginia and Pennsylvania. We are asking Marylanders to be on the lookout for this lethal disease of black walnut trees.

UME Pest Alert on Thousand Cankers Disease

Maintained by the IET Department of the College of Agriculture and Natural Resources. © 2020. Web Accessibility

University programs, activities, and facilities are available to all without regard to race, color, sex, gender identity or expression, sexual orientation, marital status, age, national origin, political affiliation, physical or mental disability, religion, protected veteran status, genetic information, personal appearance, or any other legally protected class. If you need a reasonable accommodation to participate in any event or activity, please contact your localĀ University of Maryland Extension Office.