West of the boulevard, Rumney Marsh keeps its own clock — the tide slides in over the grass, the light goes long and silver, and the neighborhoods above it wake up green. AA & B Landscaping & Irrigation, Inc keeps lawns on that side of Revere: the weekly mow, the trimmed line where turf meets fence, the cleanups that bracket a growing season at either end. Salt air is hard on a yard, and the answer is patience — cut at the right height, clear the thatch, come back next week and do it again. There is real satisfaction in a small city lot that looks deliberate: stripes running true, beds mulched dark, nothing shaggy at the corners. By the time the marsh grass turns bronze in October, the lawns above it have had a full season of care.