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Emerald Ash Borer (EAB), Agrilus planipennis
Maine Quarantine on Emerald Ash Borer
Public Comment Closes on October 23, 2023: Emerald Ash Borer Quarantine Revision
Current Quarantine Area: The quarantine area includes all of York County and Cumberland County, parts of Oxford County, and the northern corner of Aroostook County. The quarantine boundaries were drawn to include a buffer on those towns where EAB had been detected. An Emergency Order is also in place in response to further emerald ash borer detections. That area covers all of Androscoggin, Kennebec, Knox, Lincoln, Sagadahoc and Waldo Counties and Parts of Aroostook, Franklin, Oxford, Penobscot Piscataquis and Somerset Counties. 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 (DOC)
- Maine Forest Service Emerald Ash Borer Emergency Order
- FAQs - EAB Quarantine (PDF)
- EAB Quarantine Maps:
- Maine's External Map of EAB Quarantine (PDF) - updated 4/27/2021
- Regional Map of EAB Quarantine and Detections (PDF) - updated 3/31/2023
- Southern Maine Map of EAB Quarantine (PDF) - updated 3/31/2023
- Northern Maine Map of EAB Quarantine (PDF) - updated 3/31/2023
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
August 28, 2023 - Emerald Ash Borer and Other Tree Health Concerns, Maine DACF Update for Cities and Towns
August 21, 2023 - DACF Proposes Expansion of Quarantines to Slow the Spread of Three Tree Killing Invasive Species
March 31, 2023 - New Emergency Order Area Announced as Invasive Emerald Ash Borer Continues Spread into Central Maine
EAB Identification
Ash Trees Can you identify an ash tree?
Report a Suspect Either the beetle or signs of infestation
Maps, Regulations & Quarantine Information
EAB State Quarantines:
- EAB Emergency Order DACF/Bureau of Forestry/Forest Health & Monitoring
- EAB Quarantine Rules (DOC)
- EAB Quarantine Outside Maine Map as of 4/27/2021 (PDF)
- Entire states of Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Georgia, Illinois, Indiana, Iowa, Kentucky, Maryland, Massachusetts, Michigan, Missouri, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, West Virginia, Wisconsin and any additional areas infested with emerald ash borer as determined by the state agency with regulatory authority, United States Department of Agriculture, Animal & Plant Health Inspection Service or the United States Forest Service, including, but not limited to all areas shown on this map, and
- All Canadian provinces, counties, regional districts or other civil divisions that are infested with emerald ash borer as determined by provincial authorities or the Canadian Food Inspection Agency (CFIA). Including all areas listed on the most current version of the Emerald Ash Borer Regulated Areas of Canada map published by CFIA.
- EAB Quarantine Within Maine Map (PDF) - 3/31/2023
- All of Cumberland and York Counties, and parts of Aroostook and Oxford Counties.
- An Emergency Order is in place for the following areas: all of Androscoggin, Kennebec, Knox, Lincoln, Sagadahoc and Waldo Counties and parts of Aroostook, Franklin, Oxford, Penobscot, Piscataquis and Somerset Counties.
- EAB Quarantine - Southern Maine Map (PDF) - 3/31/2023
- All of Cumberland and York Counties and the towns of Brownfield, Denmark, Fryeburg, Hiram and Porter.
- An Emergency Order is in place for the areas: all of Androscoggin, Kennebec, Knox, Lincoln, Sagadahoc and Waldo Counties and parts of Franklin, Oxford, Penobscot, Piscataquis and Somerset Counties.
- EAB Quarantine - Northern Maine Map (PDF) - 3/31/2022
- The northeast portion of Aroostook County including Allagash, Caswell, Connor Twp, Cross Lake Twp (T17 R5 WELS), Cyr Plt, Eagle Lake, Fort Kent, Frenchville, Grand Isle, Hamlin, Madawaska, Madawaska Lake Twp (T16 R4 WELS), New Canada, New Sweden, Saint Agatha, Saint Francis, Saint John Plantation, Sinclair Twp (T17 R4 WELS), Stockholm, T16 R5 WELS, T16 R6 WELS, Van Buren Cove Township (T17 R3 WELS), Van Buren and Wallagrass.
- An Emergency Order is in place for the following townships:T16 R8 WELS and T16 R9 WELS
- EAB Quarantine FAQ (PDF)
- Guidance for Solid Waste Handlers (PDF) Dealing with potentially infested ash in and outside quarantine areas.
U.S. Maps Known infested areas in the U.S.
- Interactive Map (USDA APHIS)
- PDF Map (USDA Cooperative Emerald Ash Borer Project)
Firewood Ban Maine's Emergency Order banning out-of-state firewood
Canadian rules regarding importing ash from the U.S. and quarantined areas Implications for Maine ash exporters.
Best Management Practices for Handling Ash within Regulated Areas (PDF) Slow the spread within quarantine areas.
Memo to Tree Sellers From Maine's State Horticulturist
Caring for Ash Trees & Managing Forests
Best Management Practices for Handling Ash within Regulated Areas (PDF) Slow the spread within quarantine areas.
Guidance for Solid Waste Handlers (PDF) Dealing with potentially infested ash in and outside quarantine areas.
Surveillance, Outreach, Involvement
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
Biosurveillance Monitoring for EAB with the Cerceris wasp
Tree-Tagging Helping the public appreciate the value of trees
Phenology Model of Emerald Ash Borer Predicting EAB emergence with degree-day data
Volunteer Resources Free items to help spread the word
Additional Resources
Emerald Ash Borer Presentations (2019-2020):
- 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)
DACF Emerald Ash Borer Update for Cities and Towns (August 24, 2020):
- 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)
An Ash Resource Inventory Field Manual State of Maine Indian Reservations
The Story of Emerald Ash Borer a pictorial essay about EAB by the U.S. Department of Agriculture
Emerald Ash Borer Detection in Maine (YouTube) Pest and Disease Scouting & Management Activities For Landowners
FAQs
General Basic frequently asked questions about EAB
Quarantine Questions commonly asked about Maine's EAB quarantine (PDF)