Traffic wheels around the Airport Circle before seven, and Route 130 carries half of Camden County past Pennsauken's front door. K&N Lawn Maintenance Inc. runs against that grain, turning off the highway into the quiet blocks where the day is measured in lawns rather than exits. Spring in South Jersey comes on fast and green: the mowing starts, the trimming follows, the edges get cut back to the concrete, and the winter's litter of branches goes out in the cleanup. Each yard takes the time it takes, and the crisp finish is the point. By evening a whole street looks like someone has been paying attention.