Green tea originated in southwestern China, in the mountainous region of Yunnan province, where wild tea plants have grown for thousands of years. The earliest physical evidence of tea drinking dates back over 2,100 years, but the plant itself and human use of it are far older. From those misty highlands, green tea spread across East Asia, shaped entire cultures, and eventually reached every corner of the world.
The Wild Plant Behind It All
Every type of tea, whether green, black, white, or oolong, comes from the same species of plant. What makes green tea “green” is how the leaves are processed after picking: they’re heated quickly to prevent the natural browning that produces darker teas. But the plant itself evolved long before humans got involved.
Wild tea trees still grow in southwestern China, particularly in Yunnan province and neighboring Guizhou. Pu’an County in Guizhou is one of the original habitats for wild tea plants, home to ancient specimens that predate any cultivation. Genetic research consistently points to this corner of China, near the border with Myanmar, as the birthplace of the tea plant. From there, it spread naturally across a wide swath of subtropical Asia.
From Medicine to Daily Drink
The Chinese didn’t start drinking tea for pleasure. For thousands of years, it was medicine. Early Chinese civilizations, possibly as far back as 5,000 to 6,000 years ago, steeped fresh tea leaves in boiled water to treat various ailments. The drink was valued for what it seemed to do in the body: reducing discomfort, aiding digestion, and counteracting the effects of toxic plants.
The most famous origin story involves Shen Nong, the “Divine Farmer,” a mythological ruler from around 2852 to 2070 BC who is credited with teaching the Chinese people agriculture and herbal medicine. According to legend, Shen Nong discovered tea by accident when leaves from the twigs he was burning drifted up on a column of hot air and landed in the pot of water he was boiling. Being an enthusiastic herbalist, he tasted the result and found it refreshing. The story credits him with identifying tea as an antidote for dozens of poisons.
It’s myth, not history, but it captures something real about tea’s earliest role: it was a healing herb first and a beverage second. The transition from medicine to everyday drink happened gradually. Tea didn’t become a common beverage with organized cultivation and processing until around the third century CE.
The Oldest Tea Ever Found
In 2016, researchers confirmed that plant remains found in a Chinese emperor’s tomb were definitively tea, making them the oldest physical evidence of the drink. The leaves came from the Han Yangling Mausoleum near Xi’an, built for Emperor Jing (Liu Qi), who died in 141 BC. That puts these tea leaves at roughly 2,100 years old.
To confirm what they had, researchers compared the chemistry of the ancient leaves with modern tea samples. The leaves contained unmistakable traces of caffeine, which narrowed the possibilities, but the clincher was a compound called theanine, found only in plants of the tea family at high concentrations. Crystals on the surface of the ancient leaves also matched those on modern tea. This was high-quality tea, fit for an emperor, and it proves that tea drinking was well established among China’s elite more than two millennia ago.
How Green Tea Got Its Own Identity
For most of tea’s history, there was no clear distinction between “green tea” and other types. Early tea was simply dried or crude leaves boiled in water. The specific processing techniques that define green tea today, heating the leaves quickly to stop oxidation, developed over centuries of refinement.
The two main methods are steaming and pan-firing. Pan-firing, where leaves are tossed in a hot, dry pan, has roots in China and was introduced to Japan as early as 1406, when a priest named Eirin Shuzui brought the method along with tea seeds to a temple in Fukuoka Prefecture. Another account credits a Chinese man named Ko Reimin with bringing the roasting pan technique to Saga Prefecture in 1504. Steamed green tea, now the dominant style in Japan, came later. It’s believed to have been invented in 1738 by Nagatani Soen, who developed a method that produced a brighter, more vibrant leaf. Before that, ordinary people in Japan drank pan-fired tea or rough teas made by simply boiling or drying leaves.
Lu Yu and the First Tea Manual
Tea culture took a dramatic leap forward during the Tang Dynasty (618–907 CE) thanks to a man named Lu Yu, who wrote “The Classic of Tea” around 760 CE. It was the earliest known account of tea culture and traditions, covering everything from how tea should be grown and harvested to detailed instructions on preparation and consumption. Lu Yu cataloged the tools, ingredients, and customs surrounding tea, essentially creating a standard for how to drink it properly. His work elevated tea from a regional habit to a sophisticated cultural practice, and its influence rippled across East Asia for centuries.
Powdered Tea and the Song Dynasty
During the Song Dynasty (960–1279), Chinese tea culture reached new heights of artistry. Rather than steeping whole leaves, Song-era tea drinkers ground their tea into a fine powder and whisked it with hot water to create a frothy drink. They developed careful techniques for whisking gently and pouring water gradually to produce the best foam. Even the bowls were designed for the purpose: a small ridge on the bottom caused the water to “shoot” over it when poured along the inside wall, generating fine bubbles.
This powdered, whisked tea is the direct ancestor of Japanese matcha. When the Ming Dynasty (1368–1644) later shifted Chinese tea culture toward loose-leaf steeping, the older powdered style faded in China but survived and flourished in Japan.
How Green Tea Reached Japan
Tea arrived in Japan through Buddhist monks traveling to China. The most influential figure was Eisai, a Zen monk who returned from Song Dynasty China in 1191 carrying high-quality tea leaves, tea seeds, utensils, and the customs surrounding tea drinking. He planted the seeds and promoted tea as both a spiritual aid and a health practice.
In 1214, Eisai wrote “Kissa Yojoki” (Drinking Tea for Healthy Life), a text that described tea as medicine to cure sickness. The book helped establish tea’s reputation among Japan’s ruling class, and from there, tea culture spread through monasteries, samurai households, and eventually the broader population. The Japanese tea ceremony, with its emphasis on mindfulness and simplicity, grew from these roots over the following centuries.
Green Tea Arrives in Europe
Europeans didn’t encounter tea until the early 1600s, thousands of years after the Chinese had been drinking it. The Dutch East India Company delivered the first batch of tea leaves to Amsterdam in 1610, then began sending semi-regular shipments from the 1640s onward. These early imports were primarily green tea, since that was the dominant style in Chinese trade at the time. Black tea’s popularity in Europe came later, partly because it survived long sea voyages better than green tea did.
From the Netherlands, tea drinking spread to England, France, and eventually the American colonies. The British East India Company would go on to reshape global politics around tea, but the drink’s European story began with those first Dutch shipments of Chinese green tea.
Green Tea Production Today
China still dominates green tea production by an overwhelming margin. In 2024, China produced roughly 2.1 million metric tons of green tea, accounting for over 90 percent of the world’s supply. Vietnam is generally considered the second-largest producer, followed by Japan, which contributed about 65,000 metric tons in 2024. These three countries represent the vast majority of global green tea output, though smaller quantities are grown in countries like South Korea, Indonesia, and Kenya.
The plant that started as a wild tree in Yunnan’s highlands now grows on every inhabited continent. But the heart of green tea remains where it began: in the subtropical mountains of southwestern China, where wild tea trees older than any written record still stand.