Nippersink Creek runs low and clear through this corner of McHenry County in September, and the yards along its bottomland hold their green long after the field corn has gone gold. B&B Lawn Service keeps those lawns in trim through Greenwood and the towns close by — mowing, edging, trimming, and hauling off what the wind and the maples leave behind. There is a quiet pride in the last pass of the mower, when the lines run straight and the driveway is swept bare. Fall here is short and bright, so the work gets done steadily while the good weather holds.