Syosset sits on the moraine the glaciers left behind, sandy ground that drinks a rainfall straight down and asks a lawn to work for its color. Aguilera Landscaping Inc works with that soil rather than against it — mowing on a rhythm, edging the walks, trimming out the corners no mower can reach. Late August afternoons go heavy and still under the oaks toward Stillwell Woods, and then near five the air off the Sound finally moves and the whole street exhales. That is the hour a freshly cut lawn looks its best, stripes running true, the edge sharp against the driveway. The crew keeps yards in Syosset, Woodbury, Jericho and Muttontown.