Apple, Red Prairie Spy Overview Category: Fruits Common Name: Apple, Red Prairie Spy Botanical Name: Malus 'Red Prairie Spy' Sun Exposure: Full sun Height: 10-15 ft. Spread: 10-12 ft. See notes | Back to fruits Notes Dwarf Only University of MN, 1940. A red selection of 'Prairie Spy' that has better fruit adherence on the tree at maturity. Best for baking. Long-term storage apple. Very productive. Ripens late late September-early October.