On October mornings the fog comes up over the bluff at Crawbuckie and hangs in the yards along the north end of Ossining until the sun burns through around nine. Working in that hush is its own reward — mower running, the shape of a lawn appearing a few feet at a time. iLandscape NY LLC keeps those properties through the growing months with mowing, trimming, edging and mulch, then clears them down when the leaves finish falling. Winter turns the same routes into plow routes: driveways opened, walks shoveled, salt down on the shaded spots that never quite thaw. The work follows Ossining and its neighbors right around the calendar.