By Mark T. Nickum, PhD
Camellia sinensis (L.) O. Kuntze, in the family Theaceae, is grown through an impressive range of tropical and subtropical regions, and in some instances can survive in snow and below freezing temperatures. Tea is found as far north as 41 and 42° N in areas such as Turkey and Georgia, and as far south as 27° S in Argentina. In subtropical areas tea is grown in Japan -Kyoto and Kanaya; China...