Jamestown is an island, and everything growing on it is negotiated with salt wind — hydrangeas leaning, lawns running down toward Mackerel Cove, light off the bay bright enough to make green look greener. Richardson Landscaping Corporation mows and maintains those properties, from the yards off Narragansett Avenue to the open ground out toward Beavertail where nothing stands between the grass and the weather. Island turf takes a beating from sun and wind, so the cut stays generous and the borders are held tight against walks, drives and beds. Spring cleanups clear away everything winter threw up over the walls, and fall work carries on well past the point where the summer houses close their shutters. A freshly mowed lawn in that ocean light is one of the plainest good things on Conanicut Island.