Citrus junos originated and grows wild in central China and Tibet. It was introduced to Japan and Korea during the Tang Dynasty and it is in these nations that it is cultivated most widely.
It is unusual among citrus plants in being relatively frost-hardy and can be grown in regions with winters at least as low as -9 C (15 F) where more sensitive citrus would not thrive.
The juice and rind and used in drinks and flavorings. Fragrance is extracted for use in perfumes, lotions, and soaps.