Winter weather makes growing citrus in Georgia a bit of a gamble. Kumquat and satsuma trees tolerate temperatures as low as 15 degrees, but orange and lemon trees are only cold-hardy to the mid-20s.

Therefore, sour citrus fruits such as lemon, limes and small orange varieties like Satsuma and Calamondin are among those best suited to growing as houseplants. In their natural environments, citrus ...