Dwarfing Apple Rootstocks

Apples December 07, 2012 Print Friendly and PDF

Dwarfing rootstocks typically produce trees that are about 25% to 60% of the size of trees on seedling rootstocks, with a mature height of about 6 feet to 12 feet. Depending on the soil, scion cultivar, and training system, trees on dwarf rootstocks can be spaced at 20 feet x 14 feet (173 trees per acre ) to 14 feet x 4 feet (778 trees per acre). Some of the more progressive apple growers, in regions with less vigorous growing conditions, are planting very high tree densities with spacings of 14 feet x 2 feet with 1,556 trees per acre. 

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.