Midday on the Montrose flats the light comes down hard and dry, and the only real shade is under the old cottonwoods on the side streets off Main. SDMS Integral Services LLC works those blocks — mowing yards, running the trimmer along fence posts and foundations, cutting edges that hold their line against the gravel and the dust. Watering is a discipline in this country, so the mowing height rises with the heat and the clippings stay down to feed the ground they came from. Fertilizing, weed control and spring and fall cleanups fill out the rest of the year. What you get is a lawn that keeps its color in a valley that does not hand color out for free.