Loganville's older streets keep their water oaks, and on a hot afternoon the shade under them is the coolest ground in Walton County. Kemko Lawn Service works shade to sun and back — mowing, edging, trimming around root flares and mailbox posts, then clearing the walks and drive. Grass under big trees is its own puzzle, thin in places and thick in others, and it rewards a light hand more than a heavy machine. Getting it even takes attention rather than horsepower. That attention is really the whole service.