The mowers start before the traffic does on Montauk Highway, back when the air off Champlin Creek is still cool enough to hold dew on the blades. Right On Time Landscaping LLC keeps that hour on purpose — mow, edge, trim — so a lawn in Islip is standing at attention by the time the coffee is gone. Summer arrives here humid and quick off the water, and grass grows in bursts that reward a steady hand more than a heroic one. Spring and fall cleanups clear the winter grit and the oak-leaf drift, mulch goes down dark against the green, and hedges come back to square. The best part of the morning is the last look back: a stripe running true to the curb line and a driveway swept clean behind the crew.