I don't do edibles, but I had the same problems understanding what to do with ornamentals. Most of the country is first-frost/last-frost oriented, therefore most of the books, articles, etc., that you will find will be written by people who don't know anything about Zone 10. Ignore them. I do have one book that might be helpful - "Month-by-Month Gardening California" by Claire Splan. It covers everything, including edibles. Another possible is Pat Welsh's "Southern California Gardening: A Month-by-Month Guide" I think this one is more about edibles. Both are available at Amazon or B&N. Or maybe the library.
