For over four decades, John Coykendall's passion has been preserving the farm heritage of a small community in rural southeastern Louisiana. A Tennessee native and longtime master gardener at Blackberry Farm, Coykendall has become a celebrity in a growing movement that places a premium on farm-to-table cuisine with locally sourced, organic, and heirloom foods and flavors. While his work takes him around the world searching for seeds and the cultural...