The Concord River takes its slow, dark turn through Billerica, and the town keeps its common on the rise above it, shaded and mowed short. Burke Landscape, LLC works the whole year around that center of things: mowing, trimming, edging and cleanups from April on, then plowing, shoveling and salting once the river runs black between white banks. Spring in the meadows near the water is late and soggy, so the first cuts get taken high and the ground is given time to firm up. Winter asks the opposite question, all speed and timing, a drive opened before the commute rather than after it. Two different trades, one town, and the same standard for what the property should look like when the truck pulls away.