North of downtown the Fox runs quiet past Ferson Creek Park, and on a still morning the river fog comes right up over the Red Gate road. Lew’s Lawncare LLC begins days like that with dew on the boots — mowing once the blades dry, trimming the fence lines and the creek-side edges, cutting the walk borders sharp. Grass near water grows rank if you let it, so the schedule is the thing that keeps it handsome. Cleanups in March and again in November clear the debris the river wind piles up. Lawn care for the north end of St. Charles and the towns up and down the valley.