East Greenwich runs downhill to the water, and from the top of the Main Street rise you can see the masts in Greenwich Cove lined up like a hedge of their own. Fairview Landscapes, Inc. keeps lawns on that slope, where the ground drops in terraces and half the yards are held up by stone. Mowing a hillside lawn is a craft in itself — cutting across the pitch, trimming the wall lines by hand, edging the walks that switchback down toward the street. Bay air keeps this town green late into the fall, so the season runs long and the cleanups come big. When evening light comes off the cove and the lawns have just been cut, the whole hill looks the way it is supposed to look.