Re: The cold hardy list
I am a little south of Joe, whose list is based on his experience near Sacramento in Northern California.
In the San Francisco Bay Area, the list seems to be pretty accurate. I have seen people harvest Sweetheart, Ice Cream, Orinoco, Gold Finger, Blue Java and California Gold from their yards. I have not seen anyone harvest actual ripe bananas on anything other than these in our area. It is relatively easy to flower a banana here, but getting it through our frosts with ripening bananas still on them is tough. We are in a Mediterranean climate, so we have a wet season and a dry season, and our nights are almost always cool, even when the days are nice and warm.