CountiesYork, Cumberland
Browntail mothAll 16 counties
Beech leaf diseaseAll 16 counties
Call(207) 303-7291
Tree Medics is based in Biddeford and protects trees for homeowners, businesses and municipalities across York and Cumberland counties.
Tree health threats in Southern Maine
Emerald ash borerAll of York and Cumberland counties are inside Maine’s emerald ash borer quarantine.[1]
Hemlock woolly adelgidYork and Cumberland counties are both entirely within the state’s hemlock woolly adelgid quarantine.[2]
Hemlock woolly adelgidBefore the state expanded it, Maine’s hemlock woolly adelgid quarantine covered only six towns, all in York County: Eliot, Kittery, Ogunquit, South Berwick, Wells and York.[3]
Emerald ash borerEmerald ash borer was first confirmed in Portland, Maine’s “Forest City,” in 2019.[4]
Browntail mothThe Maine Forest Service has found browntail moth in all 16 counties.[5]
Beech leaf diseaseNow found in all 16 Maine counties.[6]
More on trees in Southern Maine
Emerald ash borerEmerald ash borer was first found in southern Maine in September 2018, when adult beetles were caught on traps in Acton and Lebanon in western York County.[7]
Emerald ash borerIn 2025 Maine Forest Service aerial surveys found that emerald ash borer mortality in York and Cumberland counties had reached the point where pockets of dead ash were visible from the air.[8]
Hemlock woolly adelgidHemlock woolly adelgid was first documented in York County, and by early 2012 infested forest hemlocks had been found in 31 Maine towns, mainly in York, Cumberland, Sagadahoc and Lincoln counties.[9]
Browntail mothIn 2026 the Maine Forest Service reported localized browntail moth pockets in southern Maine, mainly on the western shores of Sebago Lake, the same area affected in 2025.[10]
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.
Towns we serve in Southern Maine
York County 10 towns
Cumberland County 12 towns
Other Maine regions
Sources
- Maine Forest Service: EAB found in seven more Maine towns, with York and Cumberland counties under quarantine (2020)
- Maine DACF: Hemlock woolly adelgid quarantine counties and towns
- Portland Press Herald: State proposes expanding hemlock woolly adelgid quarantine
- Maine DACF: Emerald ash borer discovered in Portland, Maine’s “Forest City”
- Maine CDC & Maine Forest Service: Browntail moth hairs pose risk during spring outdoor activities
- Maine Forest Service: Forest & shade tree conditions, September 2026
- Maine DACF: Emerald Ash Borer Found in Western York County (2018)
- Maine Forest Service: Forest & Shade Tree – Insect & Disease Conditions for Maine, August 25, 2025 (2025)
- 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, August 3, 2026 (2026)