The term 'Great Plains Orange' is a reference to the Osage orange, a species of tree native to the Great Plains region of North America. The Osage orange is a deciduous tree that can grow up to 30 feet tall and produces a large, round, green-yellow fruit. The fruit has a thick, waxy skin and a sweet, tart flavor. The Osage orange is often used for hedges and windbreaks, as well as for its edible fruit.