By late July the shade along the Glenville roads is deep and green, and a Saturday morning in Greenwich sounds like mowers moving from one street to the next. Jason Del Vecchio Landscaping keeps lawns in that rhythm — cutting, edging, trimming the corners a mower cannot reach, and carrying off what comes up behind the blade. The satisfaction is in a single pass across an open front yard: the color evening out, the line at the walk coming up clean, the whole property looking settled by noon. Spring and fall bring the larger sweeps, when a yard is emptied of winter or put to bed for it. Greenwich and the towns beside it are where the truck goes.