if all else fails, you could always try my favorite thug 'Angelina'
Sedum (Petrosedum rupestre subsp. rupestre 'Angelina')
I swear she'd grow on the surface of the moon and the bottom of the ocean
but I know that's probably not true--still, though, I have yet to find a place that discourages her much --and I have thriving patches growing literally on dry, hot sidewalks that bake all day
