The wall in my backyard sucks. Here's the story, the house across from ours put a wall up before we moved in, but didn't clean the extra cement out between teh bricks. Anyway, today my mom decided I'd go out with a hammer and chip off all the cement. Anyway, I convinced her to instead go out and buy some climbing vines to cover up the walls. The best thing I can think of are those vines that grow along the walls on freeways? You guys know what I'm talking about? Does anyone know what those are called?