Well, my alar-um bells have been raised at your question, Deebie. The sedums they're with are hardy here, and... to be honest, I didn't even think about hardiness since it was summer when I got it and I just planted it in with the few other succulents I have, which happen to be hardy sedums. I didn't even know this was a sedum. I'll have to check on them, since I don't remember whether they were still in evidence last time I looked in the container. The container is in a sheltered spot close to the house but we'll see...