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Our goal is to help you find answers to your questions about thousand cankers disease. Feel free to browse our content and send us some feedback if you find any errors, or have some content you would like to contribute. Remember to check back often as we update this site regularly with the latest information and developments on thousand cankers disease of walnut.
Thousand Cankers Disease Survey Guidelines
The Thousand Cankers Disease Survey Guidelines for 2014 and Thousand Cankers Disease Survey Forms are now available.
May TCD Webinar Recordings Now Available
The US Forest Service hosted the last of three webinars in a series on Thousand Cankers Disease on Thursday, May 30. This seminar series on is for landowners, extension educators, and natural resource professional.
The recordings for this webinar are now available and can be viewed from our webinar page for this meeting.
Thousand Cankers Disease
Thousand cankers disease (TCD) is a disease complex native to the western United States and primarily affects black walnut Juglans nigra. This disease is the result of the combined activity of a fungus (Geosmithia morbida) and the walnut twig beetle (Pityophthorus juglandis).
Thousand cankers disease currently threatens millions of black walnut trees in forests and urban areas, an important species with great economic and ecological value throughout its native range. Several quarantines have been established in an attempt to prevent the disease from spreading.
This site is a collaborative effort between the Northeastern Area State and Private Forestry, the USDA Forest Service Northern Research Station, the Purdue University Department of Forestry and Natural Resources, the Hardwood Tree Improvement and Regeneration Center, the American Walnut Manufacturers Association, and the Walnut Council.