Tip - How to Care for Navel Orange Trees | eHow

Navel orange trees belong to the Citrus genus of trees, which includes grapefruit, lemon, lime and orange trees. Technically referred to as C. sinensis (sweet orange) to distinguish it from Citrus aurantium, navel oranges are distinguishable by the growth of a second orange at the base of the original fruit; the second fruit resembles the navel of...