Tea was first cultivated and brewed in China , and many of the best varieties still come from China . Some of the finest oolongs in the world are grown in Taiwan. Japan also produces a considerable amount of green tea, most of which is consumed domestically.
After the British took up tea drinking, they began cultivating the plants native to India in order to have more control over the trade. India , Sri Lanka , and other South Asian countries produce a large portion of the world harvest.
Indonesia (primarily in Java and Sumatra ) produces a considerable harvest each year, most of which is exported for use in blends. Tea is also grown commercially in Turkey, Russia, Africa (notably Kenya ) and South America.