Citrus
rainfall or irrigation. Today, in the United States, the most important commercial varieties include oranges, grapefruit, lemons, and tangerines and to a lesser [...] Citrus About Citrus is a genus of flowering trees and shrubs in the rue family, Rutaceae. This includes any small tree or spiny shrub, including the lemon [...] kumquat, and shaddock, widely cultivated for fruit or grown as an ornamental. It is believed that citrus plants are native to subtropical and tropical