South of Columbine the land opens toward Chatfield, where the reservoir hands the light back to the sky and the wind crosses the water most afternoons. Foster Services, Inc. keeps lawns in the neighborhoods on that end of town, cutting to a schedule the grass can count on and edging the walks so every line looks deliberate. Out where the plains begin, turf dries fast and weeds move in quickly, which makes fertilization, weed control and honest mowing height very nearly the whole job. Cleanups clear the winter grit in spring and the fallen leaves in autumn. There is real pleasure in pulling away from a property that looks composed, with stripes true, edges sharp and nothing left behind but the smell of cut grass.