Old Sudbury Road runs out past the long hayfields of Mainstone Farm, where the light arrives in wide unbroken sheets and a mowed lawn reads like a clean page. Ace - Wayland Home and Design keeps the grass in that part of town on a weekly rhythm, cutting and trimming and bringing the bed lines back to a single deliberate curve. Spring here starts wet, the low ground still holding water into May, and the year ends in a slow rain of maple and oak that has to be gathered before it mats down. There is a plain pleasure in the last pass of an afternoon, when the stripes line up and the driveway gets blown clean. The truck pulls away and the yard simply looks like somebody loves it.