Late April in Arlington: Spy Pond sheds its last gray skin of ice, the hill up toward the Heights goes an improbable green overnight, and every yard from Mill Brook to the Mystic seems to be asking for hands. John's Landscape Service, Inc. answers with the whole arc of the work — landscape and planting design, hardscape and masonry, irrigation and landscape lighting drawn up and then actually built into the ground — followed by the patient season-long keeping of it: mowing, fertilization, shrub and tree care, mulch and fresh bed edges, spring and fall cleanups. There is real satisfaction in a bed line cut clean against a lawn, in stone set so it looks like it was always there, in a yard that holds its shape straight through August. Then February turns the same streets white, and the plow goes out early, so a driveway off Massachusetts Avenue is open and dark and passable before the Minuteman path has a single footprint on it. The crew works across Arlington, Belmont, Winchester, Medford, Lexington, Cambridge and out through Metro West — one town's light and weather at a time.