I am new to this site. I looked through the list for Succulent Nurseries in California and found nothing listed.
I visited the Nursery below this last weekend - They sell retail on site and also are a resource for Nurseries.
Very large inventory, knowledgeable and helpful.
Succulent Gardens
2133 Elkhorn Road, Castroville, CA 95012
(831) 632-0482
http://sgplants.com/
JoEllen