Rumson lies between two rivers, and the Navesink side wakes first — flat water, the tide turning over, September light coming across from the Middletown shore. American Landscape keeps the lawns of the peninsula through the growing season: mowing, edging along drives and walkways, trimming, and clearing the yard as the year winds down. Salt air and river fog are part of the ground here, and grass will keep growing well into the fall because of it. There is a particular pleasure in finishing a riverfront lawn on a clear morning with everything cut even down to the hedge line. The property ends up looking the way the day does.