Stroh Ranch still carries its old name across a neighborhood of lawns and lanes, the way most of Parker does — ranch ground with houses on it now. DSW Landscape Services turns up in the long light of a late-August evening, when the heat has finally slid off and the mowers cut cleaner for it. Mowing, trimming, edging and seasonal cleanup: the plain list, kept up until a whole street of yards falls into rhythm together. Grass here has to survive dry air, hard sun and a short growing window, so keeping it green is mostly a matter of arriving on time, week after week. By dusk the clippings are gone, the edges are sharp, and the block looks like somebody meant it.