There is now a quarantine in effect for Richmond, Henrico and Chesterfield county that prohibits the movement of walnut plants or parts of plants (stumps, firewood, mulch, etc) from the quarantine area. This is an effort to prevent the spread of Thousand Cankers Disease (TCD). TCD is lethal to walnut trees and has been found in the Richmond area.
See this press release from Virginia Department of Agriculture and Consumer Services http://www.vdacs.virginia.gov/news/releases-b/072111tcd.shtml
TCD in brief…
- Caused by a fungus that is spread by a beetle.
- Cankers are not obvious; they are under the bark.
- Initial symptoms are subtle; leaves may wilt and there is die back from the top.
- Trees typically die about two years after symptoms appear.
- No known control measures; can be spread by transporting wood.
What can you do?
- Don’t’ move firewood and don’t buy firewood from an unknown source.
- Identify black walnut trees on your property and report any symptoms you see.
- Do not remove any part of walnut trees or wood from your property.
- Be aware that there are other tree diseases that are spread by moving wood.