Popponesset Bay flattens out on a July morning until it looks like poured glass, and the light coming off it makes every lawn in the neighborhood read twice as green. Classic Landscaping Cape Cod tends the grass under that light in Mashpee — mowing, string trimming, edging along drives and beds, and the cleanups that bracket the season at either end. Salt air and sandy ground make Cape lawns particular; they reward steady attention and forgive very little. The measure of a good week is simple: crisp lines, clippings gone, nothing left to notice but the color. When the fog rolls up the bay by afternoon, the yard still holds its shape through it.