You'll also find that the 'Clementine' (Citrus × clementina), 'Dancy' (Citrus reticulata), and 'Changsha' (Citrus reticulata) cultivars have very good cold tolerance. Keep in mind, though ...

and botanically are part of the group Citrus reticulata. Mandarins are known for their easy-to-peel bright orange skin, sweet and juicy flavor, and small size. Tangerines (Citrus tangerina ...