Indian tea culture the Yandaboo Treaty. In 1837, the first English tea garden was established at Chabua in Upper Assam; in 1840, the Assam Tea Company began the commercial production of tea in the region, run by indentured servitude of the local inhabitants. Beginning in the 1850s, the tea industry rapidly expanded, consuming vast tracts of land for tea plantations. By the start of the 20th century, Assam became the leading tea producing region in the world. But despite the discovery of the indigenous "Camellia sinensis" plant, the tea industry in India began with 42,000 seedlings germinated from a consignment of 80,000 seeds
Seven Color Tea plantations in the world, both in size and production. Traditionally, the Sylhet region is the most important tea-growing area in the country. Three out of the four districts in Sylhet Division are tea-producing districts: Maulvi Bazar, Habiganj and Sylhet. Srimangal, a town in Moulvibazar, is known as the tea capital of Bangladesh and is famous for being surrounded for miles around by hill slopes covered with tea gardens. Being located on hills and within dense forests, Srimangal experiences heavy rainfall and wet winters. As this is a desirable environment for excellent tea production, 38 tea plantations have been established here.