These are the institutions that are located in an enclosed space. On this enclosed piece of land, numerous kinds of plants are grown and obtained. It is one of the ex-situ strategies for the conservation of plants. The plants are identified and they are labelled according to the scientific names and classification. Lists of some botanical gardens are as follows: Royal Botanical Garden, Kew.Indian Botanical Garden, HowrahNational Botanical Garden, LucknowLloyd Botanical Garden, Darjeeling