The Mississippi Ag and Outdoor Expo is the largest display of everything for the outdoors in Mississippi is coming to the Trade Mart Rods, reels, bows, UTVs and ATVs, tractors, farm equipment, power equipment and more – you can find it all with special Expo pricing at the Ag and Outdoor Expo. Parking is free; admission is $15 for adults and $5 for children 12 and under. Free admission for children 5 and under