At dawn on the Back River the tide is usually out, the mud shining, and Tybee Island is quiet enough to hear a mower three streets over. Morris Lawn Care LLC starts in that hour — mowing, edging, trimming and clearing clippings before the heat and the beach traffic arrive. Island grass lives on salt air and sand, so it grows in its own particular way and wants a hand that knows it. Summer keeps the route full; the mild Georgia winter turns the work to cleanups, palm litter and beds. Small yards, tight lots, and every one of them finished square to the fence line.