On this way http://www.openstreetmap.org/way/370339653 there is barrier=hedge and landuse=farmland. It will confuse data users, as well as the renderers. If the farmland is surrounded by one contiguous hedge without any openings, one could duplicate the closed way and add area=no to the barrier=hedge. If the hedge does not go around without any entrance, make shorter un-closed ways for it.