[8] The tea is grown in the northern and eastern districts of Bangladesh, such as in Sylhet, Panchagarh, Lalmonirhat, Thakurgaon, Dinajpur and Bandarban.
[9] The highlands, temperate climate, humidity and heavy rainfall within these districts provide a favourable ground for the production of high quality tea.
[8] Historically, Bengal was the terminus of the Tea Horse Road connecting the subcontinent with China's early tea-growing regions in Yunnan.
[11] In 1834, Robert Bruce discovered tea plants in the Khasi and Jaintia Hills and other hilly areas in the northeast.
[citation needed] The Surma River Valley in the Sylhet region emerged as the centre of tea cultivation in Eastern Bengal.
The Assam Bengal Railway served as a lifeline for the industry, transporting tea from growers in the Surma and Brahmaputra Valleys to exporters in the Port of Chittagong.
[12][13] In the early twentieth century, many local entrepreneurs also started founding their own companies such as Syed Abdul Majid, Nawab Ali Amjad Khan, Muhammad Bakht Majumdar, Ghulam Rabbani, Syed Ali Akbar Khandakar, Abdur Rasheed Choudhury and Karim Bakhsh.
[15] Tea-producing districts include Moulvibazar, Habiganj, Sylhet, Chittagong, Panchagarh, Brahmanbaria, Rangamati, Naogaon.
[17] The rise of the Bangladeshi middle class has increasingly driven the industry to focus on a lucrative domestic market.