On a cool morning the hollows below the Mount Airy ridge hold fog until the sun clears the treetops, and the first mower of the day is louder than anything for a mile. Hill's Lawn Care works those hours around Cornelia — cutting, edging, string trimming, blowing the clippings off the drive before the dew has fully burned away. The elevation up here buys a few degrees, and the grass answers by growing hard from April clear through October. Weekly service means it never gets away from anybody. By afternoon the yards along the ridge look combed, and the truck is already three towns over.