October on the south shore of Harwich is all long light and salt in the wind, the water off Red River Beach turning the color of old pewter. Cape Coastal Landscaping mows straight through that stretch, then goes at the fall cleanup — leaves off the beds, the last cut taken low, the yard put to bed before the first hard night. When winter arrives in earnest they plow and shovel and sand, keeping driveways open on the roads that run down toward the sound. Salt air is hard on a lawn and harder on a walkway, and the answer is mostly showing up. What that buys is a property that looks cared for in every month, not only in August.