
Signs and Symptoms of EAB
First identify that the dying tree is an ash tree, and then check for the following symptoms:
A. Suckering roots.
B. Canopy die back.
C. Serpentine galleries under the bark.
D. D-shaped emergence holes.
Woodpeckers love EAB, so keep and eye out for increased woodpecker activity.
Note: Any of these symptoms by themselves may be explained by other causes and even other types of insect borers. A combination of these symptoms and general dieback of ash trees in an area provides one clue to the presence of EAB in a site.