Symptoms of EAB on Ash Trees
If you suspect that EAB is in your ash trees, look for combinations of the following symptoms:
J. Ellis, Purdue University
Dieback of leaves that begins in the upper third of the tree and progresses downward over time.
|
C. Sadof, Purdue University
Vertical splits in the tree's bark.
|
J. Ellis, Purdue University
D-shaped exit holes that are only 1/8 inch wide found in the tree’s bark on the limbs and trunk, the result of the emergence of newly formed adults. |
J. Ellis, Purdue University
S-shaped channels found under the tree’s bark caused by larval feeding.
|
D. Cappaert, MSU
Heavy woodpecker activity that is especially noticeable during winter months
|
J. Ellis, Purdue University
Water sprouts (epicormic shoots) that appear at the tree's trunk.
|
D. Cappaert, MSU
Worm-like larvae (immatures) found under the tree’s bark that can grow up to 1-inch long. |
|
Back to EAB in North America |
