Sedum atratum is a small mountain stonecrop with flowering stems deep, wine-red and tiny green leaves, changing to red in small clusters. A super-cute tiny sedum, with fiery red stems that makes great contrast with the rocks and other plants. Tedious to collect.
Germination: the seeds are very fine, mix them with a bit of sand and sow directly around the rockery or on a piece of tufa rock in early spring. This has worked very well for me.