Perennials: Problem with Autumn Joy Sedum, 1 by sempervirens

sempervirens wrote:
It sounds like Autumn Joy might be a short lived perennial in some areas. In my experience I get 2 maybe 3 yrs. out of them before the stems get woody and decline. Maybe they need continual dividing? I never have trouble the 1st year ,and it doesn't seem to matter if I start with a small or large plant. It comes back nicely and forms large clumps the 2nd year. After leaving the seed heads over winter it's the following spring I have the same problem firstyard does. Since it's the winter presence I'm after it woudn't serve my purpose to divide in the fall. Do you think that is what they need, fall division so they go into winter with more open crowns?