Paulus Hook keeps its greenery in small denominations: a strip beside the stoop, a square behind the row house, a planted line along the fence. Maid in JC looks after those pockets — mowing what there is to mow, trimming the edges tight to the brick, pulling weeds out of the bed before they get ideas, sweeping the clippings off the walk. May rain blows through off the harbor fast and leaves everything growing twice as hard, which is when a weekly visit earns its keep. Small ground shows every choice made on it. Done right, a narrow yard starts to feel like a room.