I love this idea. I'm a nut for sedum. I'm really surprised that it actually seeded itself into all those little crevices. Your aunt would be so pleased. Here's one of my favorite sedum combos.
I love your idea of creating a wall of sedum. I will buy some more sedums this weekend and plant them in a wall of wooden beams we have at the lake just to see if it will work. Thank you for sharing this beautiful idea. Your project is beautiful.
Karen, I wish I knew if that sedum was as purple as the picture. It's been a long time since I took it on my patio. Hopefully I can find one like that again some day.