Late July, Maple Road, and the heat sits down in the cul-de-sacs like water in a bowl. Marty's Lawn Services runs the midsummer route through it — mowing at a height that keeps the turf from scorching, trimming around posts and lamp poles, edging where lawn meets concrete. There is a particular pleasure in a hot afternoon that ends with three streets of Bloomfield Township looking sharp and not a blade left on the sidewalks. Grass grows slower in August, which makes the work fussier rather than lighter. Come autumn the leaves start and the route simply changes shape.