Apple trees are appreciated for their beautiful white and pink flowers as well as for their crisp, juicy fruit. They can grow anywhere from 5 to 30 feet in height and produce hundreds of apples per year.
Apple trees grow in three sizes, according to Nature Hills Nursery. Dwarf apple trees grow from 5 to 8 feet tall. A semi-dwarf tree measures from 12 to 16 feet tall, and a standard tree can reach 20 to 30 feet in height.
Most apple tree varieties are available in both dwarf and semi-dwarf. Some, such as winesap and honeycrisp, are generally only semi-dwarf size. Others, like the Gravenstein, are only cultivated as dwarf trees. Nurseries rarely sell standard-size apple trees, because of the difficulty in harvesting fruit.
Most apple trees have a medium to fast growth rate. According to Michael Dirr in his "Manual of Woody Landscape Plants," a medium grown rate is considered 13 to 24 inches per year, while a fast growth rate is over 25 inches per year. Apple trees generally reach maturity and begin producing in three to five years from planting.