Down the hill from Pennington the Delaware runs past Washington Crossing, and on cold mornings the fog lifts off the water and rolls up the towpath like something with somewhere to be. Greenleaf Lawn & Landscape is usually out in that hour through winter, plowing driveways, clearing walkways and putting down ice control while the river valley is still gray. The rest of the year the work is mowing, edging and trimming, with cleanups in spring and fall to move each season's leftovers off the grass. Properties out this way run from tight borough lots to open acreage on the river side, and every one of them wants its own approach. What doesn't change is the finish — everything cut, everything defined, nothing left behind.