The way I've always tackled that situation is, if you have drawn comb all the better. Place a frame at a time up to the hedge and the bees will walk straight onto the comb, foundation will do as well (on one occasion the queen walked onto the first frame). Alternatively if you can get a nuc box or hive with frames near to the swarm, then pull the frames partially out in a horizontal position not vertical then the bees will be enticed onto the frames.