One request I always get -- how can I visit a blueberry farm? My suggestion is check out the online u-pick directory. http://www.nabcblues.org/upick.htm
Note the season starts in the Spring in Florida and the South and ends up in the Pacific Northwest in the Fall. With all of the crazy weather we have had all over the country -- the typical schedules have changed a bit -- so I always advise to check out the websites of the different u pick farms and look for the actual schedules. Most are posting dates and times.
Even though the season is ended, you can still check out some of the farms which have farm sales and stores. You can find blueberry preserves, pies and sometimes frozen blueberries.
Have a great time and remember to check ahead!