Cinta this photo will give you an idea of leaf size. It is planted in the hole of a cinder/cement block. I agree with Clint, it would make a wonderful container plant, that is how I am using mine at this time. But Chris Hansen is using them in rock gardens, both at his home and at the nursery. It is the same size as 'Firecracker'.
Here is a link to the Sunsparkler FB page. You can see how Chris is using these smaller type sedum.
https://www.facebook.com/chris...
I think what he is doing with the nursery rock garden is similar to what you were talking about doing on another thread?