Sedum kamtschaticum (formerly S. selskianum) – This well-behaved Stonecrop forms a handsome dense flattened round mound of green foliage covered in starry clusters of yellow flowers in late spring or early summer. In the full sun, well-drained condition it prefers the foliage may develop an infusion of pink. A well-grown clump is architecturally beautiful. It has great drought tolerance and would be as beautiful in the rockery or a potted specimen as it would be a rooftop candidate. Cutting grown.