Marilyn, that's the one. I've had several for quite a few years. It doesn't get too big. But all are in the ground.
The sedums I have in pots are mostly the low sedums such as various alba, acre, hispanicum (purple form), sexangulare, old man's bones, and some Angelina which does fantastic every where. But I've also had Mongolian Stardust, ewersii and variegated kamtschaticum in pots for years.