The first cut of the year lands somewhere in late March, when the grass along Quaker Road turns from gray to green in about a week and the ground is still soft underfoot. Kernan's Lawn Service starts the season right there: cleanup first, then the opening mow that sets the height for everything that follows. From April on it is a steady weekly rhythm of mowing, trimming and edging, straight through the tired weeks of August and into the leaf work of fall. A lawn kept on schedule never has a bad month, only a slow one. Princeton, Lawrenceville, Pennington, Hopewell and Ewing are the run.