Sedum sexangulare is as the name suggests; six sided. The foliage twists in a spiral up the tiny stems in a very pretty texture.
Tending towards quite vigorous growth, this one is best in an area competing with other larger Sedum varieties or xeric plants, or even on green roofs. Although low growing, it can hold it's own against taller types and species.
I also like the contrasting textures in a Sedum tapestry.
Eventually one plant will root itself in an area of about 20cm (8-10") across to form a mat.
One of the very best of all xeric plants to use in your xeriscaping is Sedum - with over 40 different species and varieties from tiny and special types for hypertufa pinch pots, to some of the boldest and hardiest Sedum for Borders, there's ample choice...