Washington residents have reported uncharacteristically high numbers of dead and dying Douglas Fir trees to the Washington State Department of Natural Resources (DNR) this spring and summer. The culprits: drought and bark beetles.
The native bark beetle species do not normally have the capacity to kill live, healthy trees. Instead, they breed in dead or drowned branches and then infest small diameter, thin-barked portions of trees that are stressed or dying from factors such as root rot, fire or drought. read more >>