An early sign of infestation is jagged holes in the bark created by woodpeckers trying to dig out the larvae. Characteristics of trees infested with EAB include the presence of sucker growth or 'water sprouts', dieback from the top of the tree downward, woodpecker damage, S-shaped feeding galleries, splits in the tree bark, and D-shaped borer exit holes.
The Public Works Department has certified foresters who can answer questions and help you identify EAB, call 952-873-6742 or email them.