On a July evening the shade in Library Park stretches most of the way to Front Street, and every mown lawn in Bath is putting out that warm cut-grass smell. Greens Four Season Lawn Care spends those long days mowing, trimming and edging, then comes back for the cleanups that bracket the growing season at either end. A city built on brick and shipbuilding likes its greenery neat — a strip of lawn beside a walk, a dooryard held to shape between old maples. The work rewards attention more than anything else: even height, borders cut sharp, nothing left behind but stripes. When the light goes copper over the Kennebec and the last yard is finished, the street looks the way a street should.