CountyCumberland County
RegionSouthern Maine
EAB quarantineEntire county
Hemlock woolly adelgidEstablished
Tree Medics protects trees for homeowners, businesses and municipalities in Brunswick and across Cumberland County. We diagnose tree problems and treat the insects and diseases threatening Southern Maine’s trees, from emerald ash borer to browntail moth.
What’s threatening trees in Brunswick
Emerald ash borerAll of Cumberland County is inside Maine’s emerald ash borer quarantine.[1] In 2026, ash dieback and mortality were reported throughout southern Maine.[2]
Hemlock woolly adelgidAs of December 2024, the Maine Forest Service lists it as established in Brunswick.[3]
Browntail mothFound in all 16 Maine counties, and its toxic hairs stay in the environment for up to three years.[4] In 2026, Maine CDC reported higher browntail moth populations in parts of Cumberland County, along with parts of Androscoggin, Hancock and Oxford counties, even as populations statewide have been steadily decreasing over the past couple of years.[5] The Maine Forest Service’s 2026 aerial survey found localized defoliation mainly along the western shores of Sebago Lake.[2]
Beech leaf diseaseNow found in all 16 Maine counties.[6]
About Brunswick’s trees
Community treesBrunswick is recognized as a Tree City USA community, with 6 years of recognition on the Maine Forest Service’s Project Canopy list.[7]
Community treesBrunswick has a Town Arborist, and its Tree Committee, charged in 2017 with protecting public trees and organizing an annual Arbor Day celebration, was listed as inactive as of late 2025.[8]
Local landscapeBrunswick’s 71-acre Town Commons, part of a roughly 1,000-acre common granted in 1719, contains a pitch pine heath barren, a rare plant community in Maine, along with planted American chestnut trees.[9]
Browntail mothIn 2017 the Brunswick Town Council weighed spending up to $40,000 to treat browntail moth in public areas including the Androscoggin River Bicycle Path, Edwards Field, Lishness Park, the Upper and Lower Malls and Shulman Park.[10]
Browntail mothThe Maine Forest Service’s 2020 browntail moth survey mapped 102 acres of intense caterpillar activity in Brunswick, and the town was on the state’s April 2023 list of towns with significant browntail populations.[11]
Emerald ash borerWhen emerald ash borer was confirmed in Bath in October 2024, the Maine Forest Service noted it was only about four miles from a previously known infested area in neighboring Brunswick.[12]
Community treesBalsam woolly adelgid, a pest of true firs, was first found in North America in Brunswick in 1908, according to the Maine Forest Service.[13]
Local landscapeBrunswick had a population of 21,756 in the 2020 Census and covers about 46.78 square miles of land.[14]
Tree care services in Brunswick
Emerald Ash Borer
Trunk injections that protect ash trees from emerald ash borer.
Emerald Ash Borer in Brunswick
Hemlock Woolly Adelgid
Systemic treatment to keep hemlocks healthy.
Hemlock Woolly Adelgid in Brunswick
Browntail Moth
Web clipping, injection and treatment for browntail moth.
Browntail Moth in Brunswick
Tree Health Assessments
Find out what’s wrong with a tree and what to do about it.
About tree health assessmentsBrowntail moth season starts in your trees right now.
From October to March, young browntail moth caterpillars overwinter in silk webs at the tips of branches. The Maine Forest Service recommends clipping and destroying webs within reach between mid-December and early April.[15] Browntail moth help in Brunswick.
A year of tree care in Brunswick
- WinterClip browntail moth webs, assess trees while branches are bare, and plan spring treatments.
- SpringTrunk injections for ash trees after leaf-out, and browntail moth treatment before caterpillars feed.
- SummerWatch for thinning crowns on ash and early leaf drop. Check beech leaves for dark bands between the veins.
- FallLook for white woolly masses on hemlock twigs, and spot new browntail webs once leaves drop.
Nearby towns we serve
Sources
- Maine Forest Service: EAB found in seven more Maine towns, with York and Cumberland counties under quarantine (2020)
- Maine Forest Service: Forest & shade tree conditions, August 2026
- Maine Forest Service: Hemlock woolly adelgid overview and distribution
- Maine CDC & Maine Forest Service: Browntail moth hairs pose risk during spring outdoor activities
- Maine CDC Health Advisory: Browntail moth (May 2026)
- Maine Forest Service: Forest & shade tree conditions, September 2026
- Maine Forest Service: Tree City USA (2025)
- Town of Brunswick: Tree Committee (2025)
- Town of Brunswick: Town Commons (2025)
- Portland Press Herald: Council ponders bond, park, bugs (2017)
- Maine Forest Service: 2020 Browntail Moth Aerial and Ground Detection Survey (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, September 14, 2026 (2026)
- U.S. Census Bureau: QuickFacts, Brunswick town, Maine (2020)
- Maine Forest Service: Browntail moth management overview