 The great get-together in Fertile, Minnesota. Five big days of action beginning today at the Polk County Fair. Daily free stage events and, of course, tonight it's the PRCA Rodeo at 7 p.m. and the Midway opens at 5 p.m. Enjoy karaoke for all ages at the Polk County Fair Chocolate Contest. Come to the Polk County Fair in Fertile, Minnesota, the home of family fun, opening tonight at 5 p.m.