North of Broadway the older Quincy streets run under big maples that hold their shade until late October and then drop everything in a week. Madsen Lawn Treatment LLC mows, trims and edges the lawns beneath them, from the first spring flush to the final cut of autumn. Grass under mature trees grows unevenly and thins where the canopy is heaviest, so each yard gets read before it gets cut. The satisfaction is a lawn that looks deliberate: even across the middle, defined at the borders, cleared of whatever fell. Quincy and its nearby towns are the run.