September in St. Louis smells like cut grass and the diesel of beet trucks headed for the highway. The Fred Meijer Heartland Trail runs along the edge of town, and the yards near it begin their slow turn toward gold. Affordable Lawn Care STL, LLC keeps mowing, trimming and edging straight through it, then shifts to leaf and seasonal cleanup as the maples let go. Lawn care in a small Michigan town is mostly attention: the same yard, week after week, held to the same line. The last cut of the year should look as good as the first one did in May.