Before light, Montvale Avenue is mostly headlights easing toward the highway ramps, and the properties along it need to be clear well ahead of that first wave. DV Landscaping builds its winter around that hour — plowing, shoveling entries, laying salt while the city is still mostly asleep. In the growing months the same routes are traveled for mowing, trimming and cleanups, the grass along the busy stretches cut tight and the beds kept sharp against all that traffic. The work is unglamorous and completely visible: someone pulls out at six and never once has to think about the storm. Woburn sits where the roads all knot together, and that is exactly where the job gets done.