Dedham's older streets keep their shape in stone — low walls along the dooryards, granite curbing the frost lifts and settles again, roads that bend the way the Charles and Mother Brook taught them to bend. Imperial Landscaping works this ground as a commercial landscaping and snow removal company: mowing, trimming and edging until a property line reads clean, mulching, pruning shrub and tree, setting plantings, sod and hardscapes, running irrigation, drainage and the spring and fall cleanups that carry off a whole season at once. Come winter the plows, loaders and blowers move through the storm and salt goes down against black ice, so driveways, lots and walkways are open while the streetlights are still doing all the work. The crews range across eastern Massachusetts and Cape Cod — Lowell to Taunton, Quincy to Plymouth, Bourne to Provincetown — out of yards in Norwood and Bourne. What they leave behind is the plain satisfaction of it: a crisp edge holding its line, a lot swept bare, a place that looks tended from the road.