By noon in July the heat settles into the hollows around Clarkesville and the cicadas take over the pines. C.L.S Calderon Lawn Services works straight through it, because grass in this part of Georgia does not slow down for anybody in midsummer. The round is mowing, edging along drives and walks, string trimming the fence lines and mailbox posts, then blowing the last of it back off the concrete. In fall those same yards need the leaves moved and the shrubs shaped before the cold; in spring they need mulch and a first real cut. Pull up afterward and the difference is plain — sharp lines, clear pavement, a yard that looks after itself all week.