The ground around Northville is sand under a thin skin of loam, which is why the sod fields do so well out here and why an unattended July lawn can go tan in a week. Chaves Sprinkler & Weslan Company keeps Riverhead grass in the game through that dry stretch — mowing at a height that lets the turf shade its own roots, trimming and edging, keeping beds mulched so what moisture there is stays put. Spring starts with a cleanup: winter litter off, edges recut, everything opened back up to the light. Autumn ends with leaves moved load after load until the lawn is bare and green again. Between those two bookends the work is weekly, and the difference is obvious from the curb.