August in Wilton smells like cut grass and blueberries, and the light off Varnum Pond hangs around until nearly nine. Rocky Hill Landscaping Inc. spends those long evenings on lawns around town — mowing at a height that carries through a dry week, trimming tight to posts and beds, edging so the walk and the turf each keep to their own side. Spring begins with raking the winter loose and letting the ground wake up, with fertilizer and seed following wherever the lawn has gone thin. October brings the leaves, and they come off before they can smother the grass. A Wilton dooryard mowed and edged on a summer night is the sort of thing you slow down for.