Some Bernardsville driveways are less driveway than road — long, curving, climbing the mountain in switchbacks under hemlock. When a storm arrives over the ridge at two in the morning, those drives become the whole night's work, and Abbondanzos Landscape Design LLC plows and salts them so the way down is open before the first alarm rings anywhere in the house. Come April the same ground turns green and just as steep, and the trucks return with mowers instead. Cut lines are held straight across the pitch, bed borders are recut, and the walks are cleared of what the mower throws. It is one property, known twice a year — once in white, once in green.