for me? I would trim it up first, to get an idea how big it actually is under all that matted growth. cut it all the way back to about 3 inches tall, then dig it up and replant it in some good potting soil in a suitable sized pot and see what happens. now is a perfect time to do it. mix in some organic 5-5-5 slow release fertilizer into the top few inches of soil. post a pic if it starts to do anything!
