Hi Mary, I don't have any answers - I live in Seattle and aside from the wetness, they seem to really like this environment! On a different thread I read, Lynn wrote that they need some cold temperatures yearly to do well. What you are able to grow though are all those lovely Aeoniums and Echeverias!! Some of which can look like semps! (I love all the rosette type plants!) Also there was someone who said she "ices" her semps in the winter - I don't know if she was joking or not (since its not something I'd do - if it needed that much work it wouldn't make it in my garden
I totally appreciate her tenacity though
Anyway, there are a few people who live in CA on this forum, they may even be in zone 9, and also Sheryl, who's in AZ too, we'll see what they have to say!
Cheers