Tips on How to Identify Emerald Ash Borer (EAB)

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Emerald Ash Borer (EAB) has killed millions of Ash trees since arriving in North America in 2002. If spotted you can treat and save your Ash trees! Jim Zwack, VP & GM of the Davey Institute, will share a few tips on how to identify your ash tree, watch for EAB signs and treatment. For more information on managing emerald ash borer, visit .

STEP 1: Identify your ash tree
• Ash trees have branches and eaves with 7 to 9 eye-shaped leaflets.
• Leaflets grow opposite to each other
• Each compound leaf has a terminal leaflet.

STEP 2: Watch the Signs
• Striping of bark by woodpeckers searching for larvae.
• Chewing damage on foliage edges.
• 1/8th inches D-shaped holes chewed through the bark.
• S-shaped tunnels beneath the bark.
• Multiple trunk sprouts with heavy infestation.

STEP 3: Emerald Ash Borer Treatment
• If you spot early symptoms of emerald ash borer, take action ASAP
• Be proactive with an ash tree inspection.

Early treatment may be more cost effective than having to remove the tree later.

Questions to keep in mind!
• How important is this tree to my landscaping?
• How quickly could I replace the benefits this tree provides?
• How costly will this tree be to remove if it fails?

Contact your local professionally trained arborist for an EAB consultation by visiting our website at