I just wanted to pass this along, especially for the coastal or near coastal gardeners in Los Angeles, Orange, and San Diego counties. I found a good source for buying edible plants, berries, and fruit trees. It's at the Leucadia farmers market held on Sundays 10 - 2. The weblink is below:

http://www.plantsthatproduce.com/Leucadia_Farmers_Market.html

In my own quest for baba raspberry plants I found this good edible plant source. In addition to baba raspberries, you'll find all kinds of edible plants for zones 22-24. These days big box stores and nurseries don't carry many varieties that grow best in the coastal and near coastal areas. They just stock whatever they can get from inland valley nurseries.