Tea tree is historically the oldest cultivated. Swiss botanist Candolle (1788-1881) classified into types A tea that is already planted over 4000 years . Green tea originates from China and has become associated with many cultures in Asia from Japan and South Korea to the Middle East. Recently, it has become more widespread in the West. Botanical evidence indicates that India and China were among the first countries to cultivate tea. Many varieties of green tea have been created in countries where it is grown,these varieties can differ substantially due to variable growing conditions, processing, and harvesting time
