Out at Nature View Park the meadow grass reaches the knee by June and shows you exactly what a lawn would do if nobody intervened. Leaps Landscaping LLC makes the other argument — mowing on time, trimming close to foundations and fences, edging the walk into a firm border, mulching the beds so their shape stays put. Spring and fall cleanups carry the heavy work at either end of the year. Morning is the good hour for this in Amherst: dew still down, the cut clean, the smell of it carrying along the block. A kept yard is a small, deliberate kindness to everyone who walks past.