I know of a few cycads. Of the most popular I know of, is the Cycas revoluta(King Sago). I have been to Florida and southern Texas, and this well known Cycad is very popular in the southern U.S.! I was in St. Augustine, Florida back in June and saw hundreds of Sago's in the vicinity! Some specimens I saw were over 15ft (5m) tall with large trunks! I know the King Sago is hardy throughout zone 8b-11 and tolerates a minimum temperature of about 15F. One of the most cold hardy of all Cycads, is the Cycas panzihauenses. I'm not sure if I spelled the species name correctly, but the actual spelling is quite similiar

. The King Sago only grows successfully in the southern most areas of the U.S. including Texas, Florida, as well as parts of Louisiana and southern areas of Mississippi, Alabama, Georgia, and South Carolina. I'm not for sure how popular it is in southern California? For Cycad enthusiasts who know what their doing and live in zone 8a, may want to try growing the Sago in their area. Cycas panz. is said to be cold hardy to 0F, but probably grows best in zones 7b - 10.
