Updates on Emerald Ash Borer in Maine

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Maine Forest Service

Updates on Emerald Ash Borer in Maine

Late last month, the Maine Department of Agriculture, Conservation and Forestry provided a notice of the expansion of the emerald ash borer (EAB) quarantine in Maine. Since that announcement, additional EAB detections have been made that have not impacted the quarantined area. This includes the first detection in Franklin County, near a lakeside community in Wilton, and the first detection of EAB in the City of Bangor, which has developed a model response plan to manage the impacts of emerald ash borer on the city’s trees. The Southern Aroostook County District Forester, Lauren Ouellette, has put together an information session for community members with questions about the EAB, its impacts and how to navigate compliance with the expanded quarantine.

Since the beginning of 2026, EAB has been discovered in 16 new municipalities, including: Bangor, Benedicta Twp, Benton, Bowdoinham, Buckfield, Dixfield, Greenwood, Harpswell, Hartford, Palermo, Rumford, Stockholm, Sumner, Topsham, West Paris and Wilton (first detection in Franklin County).

Emerald ash borer dashboard

The interactive emerald ash borer dashboard is a great way to learn where emerald ash borer has been discovered in Maine.


Emerald Ash Borer Information Session in Sherman

Join us to learn about the recent discovery of the emerald ash borer (EAB) in Benedicta and what it means for our forests, communities, and ash trees.

Date: Wednesday, May 13, 4pm - 5pm

Location: Sherman Recreation Center, 30 School St, Sherman

Topics include:

  • EAB and look-a-likes
  • Signs and symptoms of infestation

  • Quarantine

  • Firewood

  • Ongoing monitoring

For more information contact District Forester Lauren Ouellette at 207-441-3817 or lauren.ouellette@maine.gov.

This session is free and open to the public. All are welcome!

A tree with emerald ash borer galleries

Larval galleries on an ash tree in Benedicta, Maine. Photo credit: J. Bither, Maine Forest Service

Is EAB in your town?