The size of an apple tree varies greatly, depending primarily on the rootstock used and, to a lesser extent, the apple variety (scion) and growing conditions. Mature apple trees can range from 8 feet to over 20 feet tall.
Here's a breakdown:
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Standard Rootstocks: These result in the largest trees, often reaching 20 feet or more in height.
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Dwarfing Rootstocks: These rootstocks are specifically bred to limit the tree's size. They can reduce the ultimate size by up to 50%, resulting in trees that are typically 8 to 15 feet tall.
Factors Affecting Apple Tree Size:
- Rootstock: This is the most significant factor. Rootstocks control vigor and ultimately determine the mature size of the tree.
- Apple Variety (Scion): Different apple varieties have different growth habits. Some are naturally more vigorous than others.
- Growing Conditions: Factors like soil fertility, sunlight exposure, and climate also play a role. Poor conditions can stunt growth, while ideal conditions can maximize it.
- Pruning: Regular pruning can help manage the tree's size and shape.
In summary, the "size" of an apple tree is not fixed. It's a consequence of the rootstock selection, the variety of apple, and how well it is cared for.
