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Emerald Ash Borer (EAB), Agrilus planipennis
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Maine Quarantine on Emerald Ash Borer
Current Quarantine Area: The quarantine area updated in November 2023 includes all of Androscoggin, Cumberland, Hancock, Kennebec, Knox, Lincoln, Sagadahoc,Waldo and York Counties and parts of Aroostook, Franklin, Oxford Penobscot, Piscataquis, and Somerset Counties. The quarantine boundaries were drawn to include a buffer on those towns where EAB had been detected. To slow the spread of the destructive emerald ash borer, we encourage everyone to adhere to the regulations and follow best management practices when handling ash within these regulated areas.
- EAB Quarantine Rule - CH 275 (PDF)
- Maine Forest Service Emerald Ash Borer Emergency Order (none currently)
- FAQs - EAB Quarantine (PDF)
- EAB Quarantine Maps:
- Areas Regulated for Emerald Ash Borer in Maine (PDF)
- Southern Maine Map of EAB Quarantine (PDF) - updated May 7, 2025
- Northern Maine Map of EAB Quarantine (PDF) - updated April 7, 2025
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.
Learn how to identify ash trees (YouTube)
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
EAB Identification
Maps, Regulations & Quarantine Information
- EAB Emergency Order (none currently in place 12/1/2023)
- EAB Quarantine Rules (PDF)
- EAB Regulated Articles
- The emerald ash borer;
- Firewood of all hardwood (non-coniferous) species;
- Ash (Fraxinus spp.) species: rooted plants, green lumber with any bark, live edge, or wane, and other material living, dead, cut, or fallen, including logs, stumps, roots, and branches of the genus Fraxinus; and
- Any other article, product, or means of conveyance not listed above may be designated as a regulated article if an inspector determines that it presents a risk of spreading emerald ash borer and notifies the person in possession of the article, product, or means of conveyance that it is subject to the restrictions of the regulations.
- EAB Quarantine Outside Maine (PDF)
- United States
- Canada
- EAB Quarantine Within Maine Map (PDF) - 4/1/2025
- All of Androscoggin, Cumberland, Hancock, Kennebec, Knox, Lincoln, Sagadahoc, Waldo and York Counties and parts of Aroostook, Franklin, Oxford Penobscot, Piscataquis, and Somerset Counties.
- Guidance for Solid Waste Handlers (PDF) Dealing with potentially infested ash in and outside quarantine areas.
Caring for Ash Trees & Managing Forests
Surveillance, Outreach, Involvement
Additional Resources
- Emerald Ash Borer 2020 Update - Colleen Teerling, DACF, MFS (YouTube)
- How to Look for EAB - Colleen Teerling, DACF, MFS (PDF)
- Emerald Ash Borer: Background, Management & Potential Impacts - Nate Siegert, USFS (PDF)
- Emerald Ash Borer: Management Options for Municipalities - Nate Siegert, USFS (PDF)
- EAB Resources for Municipalities - Jan Santerre, DACF, MFS (PDF)
- Emerald Ash Borer: Emergency Orders, Quarantines, and Rulemaking - Gary Fish, DACF, APH (PDF)
- Municipal Meeting Agenda (PDF | 191 KB)
- Recording of Meeting (YouTube)
- EAB: 2020 Purple Prism Trap Locations (PDF | 1.47 MB)
- Emerald Ash Borer Detections in Southern Maine 2018-2020 (PDF | 5.12 MB)
- Emerald Ash Borer Biocontrol in Maine (PDF | 544 KB)
- Emerald Ash Borer Biocontrol Info For Potential Cooperators (PDF | 206 KB)
FAQs
