Dry lean soil works best in my garden and plenty of sun. They are VERY easy to grow. You can take stems from your plant and simply stick them in the ground and new plants will grow. Mine get so tall they tend to flop so about early July I cut the plants back to keep them shorter and then I simply place the cuttings in the soil and water it. Within weeks I have new plants. Haven lost one yet. Last year at this time (Sept) I bought 1 large plant (Autumn Joy) and cut off many stems. Turned it into many plants. Almost all sedums can be treated this way- tall or short.
Good luck!

Thanks Green Haven! We planted them in full sun near my fence line so they can lean against it if need be! They are actually the tallest sedum I've ever seen. I'm hoping to fill in another area with the little ones that broke off.