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The ornamental pear and its cultivars, Redspire and Aristocrat are the tallest of the flowering trees, reaching up to 50 feet high. Fauer is the smallest at a diminutive 20 feet tall. The Capital variety is in between, reaching up to 35 feet in height.
Pears will grow almost everywhere apples grow and are nearly as cold tolerant. A standard pear tree requires about the same space as an apple tree and can be pruned to about 20 feet tall. Semi-dwarf pear trees grow to about 12 feet tall. Standard-size pear tree can grow to 40 feet tall if not pruned and have a spread of 30 to 40 feet. Standard pears are commonly pruned from 15 to 25 feet tall with an equal spread.