Down where Pembroke meets the Merrimack the water goes wide and slow above Garvins Falls, and the light coming off it makes even a plain backyard look generous in August. Limitless Lawn Care, LLC works those river-terrace lawns and the neighborhoods up the hill — mowing on schedule, trimming, edging, and clearing the yard down to bare ground each spring and fall. Sandy river soil dries fast here, so the cut gets read week to week rather than run by rote. In winter the routes reverse into plowing, walkway clearing, and salt on the slopes that face the wrong way at sunrise. The finished picture is the same in either season: nothing on the list left half-done.