The Granny Smith apple tree is a vigorous, upright-growing variety known for its bright green, tart apples. Originating in Australia in the 1860s, it thrives in temperate climates with full sun and well-drained soil. The tree typically reaches 12–15 feet in height and spreads 10–12 feet wide, forming a rounded to slightly spreading canopy. Its leaves are medium to dark green, and in spring it produces fragrant white blossoms that attract pollinators.
The fruit is the tree’s hallmark: medium to large, crisp, firm, and bright green with a slightly yellow tinge when fully ripe. Granny Smith apples are highly acidic with a refreshing tartness, making them excellent for baking, cooking, and fresh eating. The tree is moderately disease-resistant but can be prone to apple scab, fire blight, and powdery mildew if not properly managed. It benefits from annual pruning to maintain shape, encourage airflow, and maximize fruit production.
Overall, the Granny Smith apple tree is prized both for its reliable fruit yield and its distinctively tart, long-keeping apples that store well into winter.