Threat to American Walnut Trees
Courtesy of Fine Woodworking dot com – http://finewoodworking.taunton.com/item/9367/threat-to-american-walnut Black walnut trees in the U.S. are facing a serious threat called thousand cankers disease, according to Colorado State University researchers. This recently recognized problem has already devastated black walnut trees west of the Rocky Mountains over the past 10-15 years. The disease is caused by a newly discovered fungus that is carried to trees by the walnut twig beetle...
