Lawn aeration and overseeding in Falmouth, Maine.
In most towns aeration and overseeding are one option among several. In Falmouth they have become close to the whole strategy. The town's amended Chapter II-21, in force since April 1, 2026, restricts pesticides to substances on the USDA National List's allowed side, bans outdoor neonicotinoids outright and keeps all pesticides 75 feet from water bodies and 20 feet from storm drains. With chemical weed control largely off the table for homeowners and contractors alike, dense turf that leaves weeds no room is the practical answer.
Pulling cores in Falmouth soils
A core aerator pulls plugs of soil so air, water and seed can reach the root zone. The need varies with the ground. The NRCS survey maps Paxton and Woodbridge soils in parts of Falmouth — both formed in dense lodgment till, with Woodbridge rated only moderately well drained — and marine silt loams such as Lamoine and Scantic near the estuary. Those tight soils compact easily under foot traffic and mowers and benefit most from coring.
On sandy Windsor or Hinckley ground, compaction is less of a problem; there the aim is getting seed into contact with soil rather than sitting on thatch. On thin loam over Lyman-Tunbridge ledge, the tines only go so deep, and overseeding carries more of the load.
The late-summer window and the fertilizer cap
UMaine Extension recommends aerating once every one to three years in late August or early September and seeding from August into September, when weeds are slowing and soil is still warm. That matches the window our crews work.
Feeding follows the town's numbers: at most 2 pounds of nitrogen per 1,000 square feet a year, split into no more than two applications, and phosphorus only on new lawns or where a soil test shows the need. Because fertilizer is off-limits from December 1 through March 31, a fall feeding has to go down well before the first of December.
The Extension bulletin's cultural basics fit the ordinance neatly: mow at three inches, leave the clippings as free fertilizer and hold soil pH between 6.0 and 6.5 with lime. A lawn cored and overseeded each fall, fed modestly and mown high, is the one that needs the least help the following summer, and under Falmouth's rules that is exactly the lawn a homeowner wants to have.
Core Aeration · Overseeding
How we handle lawn aeration & overseeding
Maine turf sits on tight glacial soil. We pull cores to open the root zone, then overseed into the holes so seed lands on soil instead of thatch. Late August through early October is the window.
See the full lawn aeration & overseeding service page or everything we do in Falmouth, Maine.
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Mon–Sat 7:00am – 5:00pm · Based in Cumberland, Maine