The Wolf River apple tree is a, hardy,, antique, early-season, cultivar, known for producing, massive, (up to, 1 lb+) fruits, ideal for, baking,, pies,, and sauces. Originating in 1875 in Wisconsin, it is highly, disease-resistant, (scab, fire blight, cedar apple rust) and thrives in USDA Zones 3-7. These trees require 800-1000 chill hours and typically grow 12-30 feet tall. 
Key Characteristics and Information:
Fruit Features: The apples are, yellow-green with, dull, red blush/stripes, and possess, soft, tender, creamy-white flesh. They are, sometimes, described as, aromatic, but often mealy or coarse-grained, making them, best for cooking rather than, fresh eating.
Tree Characteristics: It is a, vigorous, upright tree, that can grow to 12-16 feet or, sometimes, up to 20-30 feet. It is considered, "rangy" and hardy.
Uses: Known for the saying "one apple, one pie," making it, excellent for, baking, drying, and making, apple butter.
Disease Resistance: Highly regarded for its, resistance to common apple diseases, including, scab, mildew, and fire blight.
Cultivation: Requires, full sun (6+ hours) and well-drained, slightly acidic to neutral soil.
Pollination: This variety, requires cross-pollination to fruit properly.
Harvest Time: Early season (August to September).