CountiesAroostook
Browntail mothAll 16 counties
Beech leaf diseaseAll 16 counties
Call(207) 303-7291
Tree Medics serves homeowners, businesses and municipalities in Northern Maine and Aroostook County.
Tree health threats in Northern Maine
Emerald ash borerEmerald ash borer was first detected in Maine in 2018, at opposite ends of the state, including Aroostook County. It has since been confirmed in Madawaska, Frenchville, Grand Isle and Van Buren.[1]
Emerald ash borerIn April 2026, emerald ash borer was confirmed in Benedicta, far from any known infestation, and Maine expanded its quarantine in Aroostook County.[2]
Beech leaf diseaseBeech leaf disease has now been found in all 16 Maine counties.[3]
Browntail mothThe Maine Forest Service has found browntail moth in all 16 counties.[4]
More on trees in Northern Maine
Emerald ash borerMaine’s first emerald ash borer detections came in 2018 in northern Aroostook County, where lightly infested ash was found in Madawaska and beetles were trapped in Grand Isle, leading to an August 2018 stop-movement order for Frenchville, Grand Isle and Madawaska.[5]
Emerald ash borerAn emerald ash borer infestation was confirmed in Van Buren in fall 2020.[6]
Emerald ash borerIn 2024 emerald ash borer beetles were caught on traps outside regulated areas in Westmanland and Caribou, and the state added a buffer of about two towns around the predicted expansion area.[7]
Beech leaf diseaseAs of 2025 the northernmost confirmed beech leaf disease in Maine was in the town of Merrill in Aroostook County.[8]
Browntail mothIn 2021 browntail moth webs were found in Aroostook County for the first time in decades.[9]
How Tree Medics helps
Ash treesEmerald Ash Borer TreatmentTrunk injections, retreated every two to three years, to protect valuable ash trees.
HemlocksHemlock Woolly Adelgid TreatmentSystemic treatment that moves into the twigs and needles where adelgid feed.
Oaks & hardwoodsBrowntail Moth TreatmentWeb clipping, injection and targeted treatment for browntail moth.
DiagnosisTree Health AssessmentsHealth and risk assessments, property inspections and written reports.
Not sure if we cover your town?
Tree Medics is based in Biddeford. Call (207) 303-7291 or email SaveMyTrees@TreeMedics.com to talk about trees on your property in Northern Maine.
Other Maine regions
Sources
- Maine Public: Emerald ash borer infestation spreads to 7 Maine communities
- Maine DACF: Notice of EAB quarantine expansion (April 2026)
- Maine Forest Service: Forest & shade tree conditions, September 2026
- Maine CDC & Maine Forest Service: Browntail moth hairs pose risk during spring outdoor activities
- Maine DACF: Emerald Ash Borer Found in Western York County (2018)
- Maine DACF: Seven Additional Maine Towns Found to Have Emerald Ash Borer (2020)
- Maine Forest Service: Forest & Shade Tree – Insect & Disease Conditions for Maine, October 9, 2024 (2024)
- Maine Forest Service: Forest & Shade Tree – Insect & Disease Conditions for Maine, August 25, 2025 (2025)
- Bangor Daily News: Prepare for another irritating browntail moth outbreak next summer (2021)