I'm in the process of reworking my backyard. One of the things that will get changed is the river jack borders (surrounding the slate patio). The designer at the local nursery recommended Angelina sedum as ground cover. I fell in love with it, but after hitting the Internet I'm afraid it might not be good idea for this shared fence. Would it jump over to the neighbors' yards? Would recycling the river rocks and build a "dam" against the fence contain it? Your insight is appreciated.