Bananas have long been grown near La Conchita, California at the Seaside Banana Farm. La Conchita apparently is the site of a rare microclimate that is perfect for growing bananas. In the winter of 1995, heavy rains and mudslides cuased heavy damage to the farm, but the owner is rebuiding nearby. He has registered the domain name http://www.bananafarm.com, but as yet, there is no site there yet.
Sorry, bananafarm.com is a resort in Hawaii; bananagarden.com is the Seaside Banana Farm site (which doesn’t exist yet!).