By mid-morning the brick storefronts around the Lawrenceville square are already holding heat, and the shade under the old courthouse cupola is about the only cool thing downtown. A CUT ABOVE LAWN CARE SERVICE works the streets running out from it, where zoysia and bermuda grow fast in midsummer humidity and a lawn can go shaggy in a week. Mowing, string trimming, crisp edges along walks and drives, hedges brought back to a clean line — the ordinary work that makes a house look settled. Clippings get blown off the sidewalk so the finish is as tidy as the cut itself. Come evening, when the heat finally breaks, the yards left behind still hold their stripes.