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Citrus Rootstocks

Dr. Kim D. Bowman, USDA, ARS

Citrus RootstocksPlants in the genus Citrus (and others closely related) provide a wide assortment of fruit types, including sweet orange, grapefruit, mandarin, lemon, lime, pummelo, kumquat, and finger lime.

Most citrus trees are grown as a grafted combination of a scion (fruiting cultivar) on the top, and a rootstock cultivar that forms the lower trunk and root system.

This site is dedicated to providing information to citrus growers, nurseries, and researchers about the citrus rootstocks that are a critical component for a healthy citrus tree.