Late September on Silver Street: the hayfields cut and gold, the light coming in low and long, the first frost maybe two weeks out. Mercieri Landscaping is finishing its mowing weeks then — cutting, trimming, edging, clearing leaves as the hills begin letting them go — and watching the sky for the turn. When it comes, the trucks change over to plows and the routes run at night, opening driveways, clearing walks, salting the steep spots. Monson gives you both extremes and not much middle ground. Doing right by a property means being there for each of them.