The ash tree (Fraxinus species) is the target of EAB.
The green ash (Fraxinus pennslyvanica) is a favorite target of EAB. They were once also favored as shade trees because of their long lifespan (up to 250 years in some cases). They possess a relatively high growth rate and high tolerance to urban conditions like road salt and compacted soil.
Ash trees in general are easy to identify because of the prominent ridges in their bark creating a diamond shaped pattern. Green ash in particular can be identified by their leaves: compound, 10 inches to a foot long, with about seven to nine stalked leaflets which form parallel to each other on opposite sides of the main stem.