In July the ridges north of Jasper stack up one behind another in fading blues, and the heat comes off the four-lane in visible sheets. That is the season Head Hunters Lawn Service earns its water jug: mowing, trimming and edging yards while the Bermuda pushes an inch a day and the fescue up on the cooler slopes fights to keep its color. Start early, finish before the worst of the afternoon, blow the walks down, move on. A summer lawn cut at the right height holds its green longer, and that quiet piece of know-how is worth more here than anything flashy. Come evening the mountains go purple and the yards along the way look like somebody paid attention.