Lebanon runs long and green along the Salmon Falls River, where the New Hampshire line is only water and a driveway can go a quarter mile before it finds a house. Matty J Landscaping mows that kind of country — wide yards carved out of hayfield and oak, the trim line held around stone walls, fence posts and the corner of the barn. In July the grass comes on fast on river ground, and the schedule is what keeps every property honest. When fall arrives the cleanups pull the leaves off before the earth goes hard. Big lawns look easy when the passes run straight, and straight is exactly the point.