Mary and her brother, Den Berry, were raised by their parents, Wendell and Tanya Berry, at Lanes Landing Farm in Henry County, Kentucky. She attended the University of Kentucky and has spent her adult life farming for a living in Henry County starting out in dairy farming, growing Burley tobacco, and later diversifying to organic vegetables, pastured poultry and grass-fed beef. Mary is married to Kentucky farmer, Steve Smith, who started the first Community Supported Agriculture (CSA) farming endeavor in the state of Kentucky. They raise Large Black breed hogs on a farm on the Little Kentucky River in Trimble County. If her daughters Katie Johnson, Virginia Aguilar and Tanya Smith choose to stay in Henry County, they will be the ninth generation of their family to live and farm there. Mary currently serves on the Board of Directors of United Citizens Bank, in New Castle, Kentucky. She is on the Board of Directors of the Schumacher Center for a New Economics in Great Barrington, Massachusetts. She speaks all over the country as a proponent of agriculture of the middle, in defense of small farmers, and in the hope of restoring a culture that has been lost in rural America. Toward these ends, in 2011 Mary established The Berry Center, in New Castle, Kentucky.