When Wal-Mart calls, Herman Farris always finds whatever the retailer wants, even if it's yucca root in the dead of winter. Farris is a produce broker in Columbia, Mo., who has been buying for Wal-Mart from auctions and farms since the company began carrying fruits and vegetables in the early 1990s.
During the summer and fall, nearly everything Farris delivers is grown in Missouri. That's Wal-Mart's definition of "local" — produce grown and sold in the same state. In winter, it's a bit tougher to source locally.