Walnut Hill sits up on its little rise in Marion County, oaks all around it and southern Illinois heat pressing in from May onward. Cary's Lawn Services keeps up with what that climate does to a yard — mowing before it gets ahead, trimming around trees, posts and outbuildings, edging walks and drives, raking the place back to order when the leaves come down. Grass on a ridge dries unevenly, sun on one side and shade on the other, so a good cut takes some reading of the ground. Done right, the whole lot looks like one thing instead of four. That is what people notice from the road.