Citrus
fruit or grown as an ornamental. It is believed that citrus plants are native to subtropical and tropical regions of Asia and the Malay Archipelago. Some citrus [...] present in the Mediterranean basin for centuries. Since citrus originates from these warmer climates they are not frost hardy. Temperatures not falling [...] commercial varieties include oranges, grapefruit, lemons, and tangerines and to a lesser extent, tangelos. Oranges account for the greatest value in terms