North of town the Mulberry runs shallow over gray stone, loud after a spring rain and barely moving by late August. Riverstone Lawn Care takes its name from that kind of ground — solid, plain, weathered — and works Dacula lawns the same way: mowing on a dependable turn, trimming close, edging the walks, clearing drives and beds. Yards here sit on clay that holds water in March and cracks open in September, so the mowing height changes with it. Fall brings hardwood leaves down in drifts along the fencerows, and the blowers earn their keep. What stays behind is a lawn that plainly looks looked-after.