The leaves of Camellia sinensis are used throughout Asia in the production of tea, which is where its nicknames ‘tea tree,’ ‘tea plant’ and ‘tea flower’ originate. Camellia leaves, buds and stalks and are processed differently to create a wide variety of teas, such as green tea, white tea, black tea and oolong. According to a 2013 study, black tea is associated with a decreased risk of advanced stage prostate cancer in men.
It is not only Camellia sinensis that can be used to make tea—you can also use the leaves of Camellia japonica and sasanqua. These varieties differ in taste and their teas don’t contain as much caffeine.