I'm not much help on the tender succulents. I do grow a few indoors, never have put them outside. Haworthia fasciata; I'm on the second round of pups from the original mother. It would probably work good in a dish garden. It has dark green color and interesting texture. Very slow to grow.
Sedum adolphii, again, it stays inside under my lights.
I also have several species of Echeverias inside under lights.
I have had all o0f these for several years. The Haworthia for probably seven or eight years.
