Saturday morning in Frankfort Square begins with sprinklers ticking over and somebody's dog testing the fence line. CNC Lawn Care, Inc. moves through streets like these on a weekly rhythm — deck height set for the heat, stripes laid the same direction they were laid last time, trimmer work around mailbox posts and light poles. Northern Illinois grass sprints in May, sulks in August, then comes roaring back with the first cool rain of September, and the schedule bends to meet it. Cleanups bracket the year: debris pulled from the beds in spring, leaves carried off in autumn, mulch spread so the ground can hold its water. What gets left behind is a lawn that looks quietly finished.