In Burns Park the sidewalks vanish under October in the space of a single weekend — bur oak, silver maple, a century of planted street trees all letting go at once. Ann Arbor Lawn & Snow works those blocks straight through the leaf weeks, mowing and clearing until the yards go still, then returns with plows when the ground finally locks up for good. Walks get taken down to the concrete, because a family's entire morning can hinge on a shoveled path to the car. In June the same lawns get their weekly cut and a crisp line drawn along every bed and driveway. The address changes street to street; the standard doesn't move.