Citrus × aurantium (Seville Orange)

Also known as Bitter Orange, Sour Orange, Seville Orange, Bigarade Orange, or Marmalade Orange is (sensu stricto) the citrus tree Citrus × aurantium and its fruit. It is native to Southeast Asia and has been spread by humans to many parts of the world. It is probably a cross between the pomelo, Citrus maxima, and the Mandarin Orange, Citrus reticulata.

These sour oranges are extremely juicy, segment very neatly & contain very few seeds. They are ideal for marmalade because of their wonderfully strong orange taste. Cold tolerant once established.