All species of ash trees are susceptible. This includes all four species native to North Carolina - white ash, green ash, Carolina ash, and pumpkin ash.
The larvae of the beetle bore into the bark and feed on the tissues of the tree. This prevents the movement of nutrients and water within the tree, eventually causing it to die.
The adult leaves a “D”-shaped exit hole in the bark about 1/8 inch in diameter when it exits the tree. The canopy of the tree begins to thin, and dieback begins at the top of the tree. Most of the canopy will be dead within two to five years of when symptoms are first observed.
Insecticides are available for those wishing to protect high-value ornamental trees. Re-treatment must take place every one to two years. Contact a certified arborist for more information on treatment options. Also, consult this Emerald Ash Borer insecticide guide.
It is estimated that the City manages 1,300 ash trees in the public right of way.
Consult this document to find out where the EAB has been spotted in North Carolina.
Consult these links for more information about EAB.
National Forest Service emerald ash borer FAQ
Emerald Ash Borer Information Network
Refer to this document for a handy guide to identifying ash trees that are vulnerable to the Emerald Ash Borer.