Out along Atlantic Road the lawns grow into a steady salt wind, low and tough, with the surf working the ledge at Bass Rocks below them. Harris Lawn Maintenance keeps those yards on a schedule — mowing at a height that suits the exposure, trimming, edging beds and walks, mulch laid where the wind wants to strip it. Spring cleanup clears the winter wrack; the fall one takes the leaves before rain glues them down. Overseeding and fertilizing follow the weeks the grass actually responds to. There is a satisfaction in stripes running true across a yard the ocean keeps testing.