By the second week of May, Ten Mile Creek has greened its whole corridor and West Hills yards grow faster than anyone can chase by hand. Mowing on a set rotation is what keeps that surge from becoming a wall — deck height matched to the grass, edges run along walks and drives, trimming around the play sets and the light posts. Fertilization and weed control account for a Knoxville summer that holds its heat into October and gives crabgrass every encouragement. Then autumn arrives and the leaves come off in steady passes rather than piling in drifts against the foundation. A lawn kept on schedule looks different from the sidewalk, and it stays that way all season.