CountiesPenobscot, Hancock, Washington, Piscataquis
Browntail mothAll 16 counties
Beech leaf diseaseAll 16 counties
Call(207) 303-7291
Tree Medics serves homeowners, businesses and municipalities in the Bangor area and Downeast Maine.
Tree health threats in Bangor & Downeast Maine
Emerald ash borerEmerald ash borer has been confirmed in Hermon, on Bangor’s western border, and on Mount Desert Island, and the City of Bangor has begun treating its ash trees.[1]
Hemlock woolly adelgidBangor, Bar Harbor, Ellsworth and other Penobscot and Hancock County towns are within the state’s hemlock woolly adelgid quarantine.[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 Bangor & Downeast Maine
Emerald ash borerIn April 2025 the Maine Forest Service confirmed an established emerald ash borer infestation in Bar Harbor on Mount Desert Island and extended the quarantine to every town on the island.[5]
Emerald ash borerBangor was among 16 Maine communities with first-time emerald ash borer detections announced in spring 2026.[6]
Emerald ash borerA 2024 survey counted 8,574 trees on Bangor public land, about 20 percent of them ash, making ash the city’s second most common public tree after Norway maple.[7]
Hemlock woolly adelgidHemlock woolly adelgid was first found on Mount Desert Island in 2011 on ornamental hemlocks, prompting 2012 surveys there and in other parts of Hancock, Washington and Waldo counties.[8]
Beech leaf diseaseIn 2021 beech leaf disease was verified at the Penobscot Experimental Forest in Bradley and Eddington.[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 Bangor & Downeast Maine.
Other Maine regions
Sources
- WABI: City of Bangor forms plan to protect trees from emerald ash borers
- Maine DACF: Hemlock woolly adelgid quarantine counties and towns
- 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 Confirmed on Mount Desert Island (2025)
- Bangor Daily News: Quarantine area expands for emerald ash borer (2026)
- Bangor Daily News: Bangor could lose 20 percent of its trees to emerald ash borer (2024)
- Bangor Daily News: Hunt for tiny sap-sucking tree killer expands to MDI (2012)
- Maine Forest Service: Forest & Shade Tree – Insect & Disease Conditions for Maine, September 23, 2021 (2021)