The United States has been separated into 10 different plant hardiness zones by the USDA National Arboretum. These zones have been dictated according to the average minimum temperature per year. Zone three is located in northernmost regions of the country, and features a minimum temperature ranging from negative-30-degrees Fahrenheit to negative-40-degrees Fahrenheit.
The Ashmead’s Kernal tree was first introduced in America during the 1700s, and its apple fruit features a misshaped green/russet design. The appearance of this tree’s fruit is sweet and features a pear-like quality, which makes it unique among other apple tree varieties. This tree thrives in zones three through six, and requires full sun to grow. The Ashmead’s Kernal tree is classified as a semi-dwarf as it only grows 15-to-20-feet. While the tree can take three-to-five years to produce fruit, once the tree has matured enough fruit can be harvested in October.
The Haralson apple tree thrives in zones three-to-nine, and is characterized by its ability to thrive in cold temperatures. This tree can grow to a maximum height of 30-feet and a maximum width of 14-feet. The leaves of this tree are medium in size and feature a bold green color. During the blooming period, which spans from mid spring to early summer, white, fragrant flowers appear. After the blooming season ends the apple fruit begins to form. These apples ripen during late September throughout early October. Haralson apples are commonly used for ciders due to its sweet and tart flavor mixture.
The gravenstein apple tree can grow to be 30-feet tall and 10-feet wide, and produces sweet apples commonly used in desserts due to their sweet and distinct flavor. The tree thrives in USDA zones three through nine, and requires full to partial sunlight to mature. Due to this tree’s toughness, it can last well during times of drought and its root system is adaptable according to soil type. The gravenstein apple tree begins to bloom in mid spring and the fruit can ripen as early as late July, which is a rarity within zone three fruit trees. Pick apples as soon as they are ripened as they can rot easily if not clipped from the tree.