When you think of local agriculture, blueberries are likely not the first thing that comes to mind, however... since the late 1990's, California blueberries are worth keeping in mind. For a little history on the subject, take a look at this 2009 Los Angeles Times article: http://www.latimes.com/food/la-fo-blueberry27-2009may27-story.html ;
Besides being tasty, blueberries are also very good for you. They are low in calories -- fewer than 100 for a full cup. That same one cup of berries delivers 14% of the recommended daily dose of fiber and nearly a quarter of the recommended daily intake of vitamin C.
If you have a hankering for local blueberries, there is a blueberry farm in Santa Barbara. This is not an official product endorsement, but their website is interesting and includes links to some great blueberry recipes: