La Verne Nursery is a large wholesale grower located about an hour's drive north of downtown Los Angeles -- depending on the time of day. La Verne is a major supplier of plants for Home Depot in California.
Here's the top portion of their webpage for what they call subtropicals showing some of the bananas they have under cultivation. BE ADVISED that the pictures were obtained by a graphic artist. In particular, I've marked the Namwah imposters but have good experience with the others.
