Emerald Ash Borer (EAB), Agrilus planipennis

Maine Quarantine on Emerald Ash Borer

The Maine Department of Agriculture, Conservation and Forestry is proposing changes to the state's emerald ash borer quarantine.

A virtual public hearing is scheduled for March 16, 2021, from 10:00 to 11:00 AM. Anyone interested in making public comment may join the meeting using MS-Teams or by telephone at (207) 209-4724 - confirmation code: 390 166 010#.
Written comments may be submitted until 5 PM April 2, 2021, to gary.fish@maine.gov or Gary Fish, Maine DACF – Horticulture, 28 State House Station, Augusta, ME 04333-0028.

map of emerald ash borer quarantine in MaineCurrent Quarantine Area: The quarantine area includes all of York County, all of Cumberland County, parts of Oxford County, and the northeastern corner of Aroostook County. The quarantine boundaries were drawn to include a buffer on those towns where EAB had been detected. EAB was found in northern Aroostook County in May 2018, western York County in September 2018, and Cumberland County in September 2019.

emerald ash borer adult on head of penny

The emerald ash borer (EAB), Agrilus planipennis, is one of the most serious invasive species threatening our ash resources and forests. All species of (Fraxinus) ash trees, but not (Sorbus) mountain ash, that grow in Maine are susceptible to injury and death by the emerald ash borer.

EAB was first found in Aroostook County (Madawaska, Frenchville, and Grand Isle), and York County (Acton, Berwick, and Lebanon), ME in 2018. It was detected in Cumberland County (Portland) in September 2019.

What's New

September 19, 2019 - Proposed Rule to Deregulate the Domestic Emerald Ash Borer Quarantine Questions regarding the elimination of the federal quarantine

EAB Identification

adult emerald ash borer
Ash Trees Can you identify an ash tree?
Report a Suspect Either the beetle or signs of infestation

Maps, Regulations & Quarantine Information

EAB quarantine map
U.S. Maps Known infested areas in the U.S.
Firewood Ban Maine's Emergency Order banning out-of-state firewood
Guidance for Solid Waste Handlers (PDF) Dealing with potentially infested ash in and outside quarantine areas.
Memo to Tree Sellers From Maine's State Horticulturist

Caring for Ash Trees & Managing Forests

EAB management
Guidance for Solid Waste Handlers (PDF) Dealing with potentially infested ash in and outside quarantine areas.

Surveillance, Outreach, Involvement

survey, outreach, involvement
Biosurveillance Monitoring for EAB with the Cerceris wasp
Monitoring for EAB with Traps (PDF) Resource for municipalities and others to purchase monitoring supplies
Purple Trap Survey USDA's detection trap
Trap Tree Network Girdling an ash for EAB detection
Phenology Model of Emerald Ash Borer Predicting EAB emergence with degree-day data external link
Tree-Tagging Helping the public appreciate the value of trees
Volunteer Resources Free items to help spread the word

Additional Resources

The Story of Emerald Ash Borer a pictorial essay about EAB by the U.S. Department of Agriculture
Emerald Ash Borer Detection in Maine (YouTubeexternal link) Pest and Disease Scouting & Management Activities For Landowners


General Basic frequently asked questions about EAB
Quarantine Questions commonly asked about Maine's EAB quarantine (PDF)