The Bad River takes its slow bends through St. Charles Township, and the bottomland oaks along it shed more acorns and leaves than any yard can absorb on its own. Acorn Tree Service & Landscape Inc. keeps lawns here in order — mowing on schedule, trimming close to trunks and posts, edging drives and walks so the flat Saginaw Valley ground gains a little definition. Autumn is the busy stretch: leaves off the grass, beds cleared out, everything cut low before the freeze arrives. Spring runs the sequence in reverse, waking the turf out of a long grey valley winter. Ordinary work done attentively, and it shows from the road.