August in Winthrop runs hot and still, the kind of week when the grass along Route 133 stops growing and the ponds go glassy by four o'clock. R.A. Mowing LLC keeps to the schedule anyway — cutting at the right height for the heat, trimming, edging, mulch topped off, clippings blown off every walk and drive. A summer lawn asks for judgment as much as horsepower: cut too short in a dry spell and you pay for it in September. When the rain finally comes back, the well-tended yards green up first and it shows all the way down the road. That is the reward for showing up every week.