Indian tea culture thriving in Assam, when a native from the province present, seeing some tea said, 'We have the plant growing wild in our jungles.'" It is then documented that the Assamese nobleman, Maniram Dutta Barua, (also known as Maniram Dewan) showed British surveyors existing fields used for tea cultivation and wild tea plants growing in the Assamese jungle. In the early 1820s, the British East India Company began large-scale production of tea in Assam, India, of a tea variety traditionally brewed by the Singpho tribe. In 1826, the British East India Company took over the region from the Ahom kings through
Sayama tea were brought to this region by rivers. The upper layer is made of a reddish loam created by the accumulation of volcanic ash. Together, these two layers make the region unsuitable for growing rice but suitable for tea growing, which requires high precipitation and high soil permeability. It is known that the Japanese people started growing tea trees roughly 800 years ago when Buddhist monks who traveled to China brought back seeds. A historical document from the Nanboku-chō period, , mentions as one of the best regions for tea along with , , , , and . However, the production