Bev, that's a wonderful idea!!!
Here are pictures of my sedum side of the rock garden and you can see the Upright spectabile 'Neon' & 'pink Bomb are so much bigger than the rest.Those are the only ones i purchased,planted last fall.
The 2 in the back next to each other are the 2 I'm talking about.All of the are growing nicely,i guess them 2 are just bigger plants than the rest glad i planted them in the back!!!