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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.
Cultivars, such as Bradford and Chanticleer, grow up to 30 to 50 feet tall in U.S. Department of Agriculture Plant Hardiness Zones 5 through 9. Established ornamental pear trees tolerate drought and prefer full sun.