Emerald Ash Borer Girdled Trap Tree Peeling Events

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Maine Forest Service

Emerald Ash Borer Girdled Trap Tree Peeling Events

Autumn is just around the corner, and it is time to start thinking about felling and peeling the emerald ash borer (EAB) trap trees that were girdled this spring. Thanks in part to woodlot owners and community scientists, there are approximately 50 ash trap trees girdled throughout the state this year to monitor the spread of EAB. 

In This Issue:

A log and a knife

Ash bolt being peeled to look for emerald ash borer.

Make sure your effort is counted!

Did you girdle a tree to monitor for EAB? Please look at the map below – if you do not see your tree represented or are unsure whether you filled in the online form, please email your tree’s coordinates and your contact information to ForestHealth@maine.gov or call 207-287-2431.

Map of Maine showing locations of girdled trees

Girdled trap trees for which location information was provided to the Maine Forest Service Insect & Disease Lab (Aug 31, 2022)

View a larger map (PDF).

Get Ready to Process your Tree: Sign up for a Peeling Workshop

Although simple in theory, in practice it is easy to miss early infestations of EAB in peeled log sections. Therefore, we urge you to join us in processing your girdled trees. We have scheduled five log peelings for this fall. Bring your ash bolts, work gloves, and sturdy shoes and join us for one of these events:


Tuesday, Sept 27 – Bar Harbor, ME 9:30 AM to 2:00 PM(or when finished)

Thursday, Sept 29 – Gray, ME, 8:30 AM to 4:00 PM*

Tuesday, Oct 4 – Augusta, ME 8:00 AM to 4:00 PM

Thursday, Oct 6 – Old Town, ME, 9:00 AM to 3:00 PM.

Wednesday and Thursday, Nov 2-3 – Stockholm, ME 8:00 AM to 5:00 PM*

*Trees from the northern regulated area must be peeled in Stockholm. Your tree must be peeled in Gray if it is from the southern regulated area. Ash bolts cannot be moved out of regulated areas. If your tree is in an unregulated area, you may take it to any of the peeling locations. The one tree in the central Emergency Order area will be peeled on-site. 

How to Register

Please email ForestHealth@maine.gov or call (207) 287-2431 to register. Location details and information on preparing your trap tree for processing will be provided to all who sign up. Please feel free to sign up to help peel even if you did not create a trap tree. To help us plan, please register by September 20 for the September and October workshops.

If you have any questions or cannot bring your bolts to one of the workshops, please get in touch with Colleen Teerling (207-592-2474, Colleen.Teerling@maine.gov).

Thank you very much for your help.