Found in Malibu.
These are all over in Santa Barbara, too. I also saw some at Parma Park, but the photo didn't come out.
According to Bob Case, Asphodelus fistulosus is a federally rated noxious weed. It is not native or widespread in California. Some south coast counties have sizeable populations. Populations should be reported to the county agricultural commissioner. The California Native Plant Society (CNPS) and the California Invasive Plant Council (Cal-IPC) encourage control and eradication efforts. Hikers should not pick the flowers and spread the seed.