Cross the Lazaretto Creek bridge early enough and the marsh is still silver, the shrimp boats tied off and the road ahead empty all the way onto the island. That is when Beaufort Lawn Care Co. likes to start on Tybee — mowers down while the air is cool and the grass still holds the night's damp. Island yards are small and particular, hemmed by fences, dune crossovers and oleander, so the work is as much trimming and edging as it is mowing. The reward is the walk-back look: every border tight, the sand swept off the concrete, the whole lot squared up before the day's first beach traffic rolls down Highway 80. Cleanups and hedge trimming round out the schedule as the growing season stretches long into fall.