The Agri Horticultural Society of India was founded in 1820 by William Carey on the Alipore Road, Kolkata. It has a flower garden, greenhouses, a research laboratory and a library. It houses a massive collection of plants and flowers. It has a significant collection of botanical varieties, including Cannas for which it has a long and distinguished tradition, with facilities for gardeners and plant/flower lovers. Courses on gardening and cultivation of certain species are offered to the general public from time to time. Its very big.