It is renowned for its collection of a variety of orchids. It includes more than 300 varieties of orchids, spices, medicinal plants and palms trees. Attached to it is the National Herbarium. The total area of the botanical garden is 147 acres (0.59 km2), at 460 meters above sea level, and with a 200 day annual rain fall. It is managed by the Division of National Botanic Gardens of the Department of Agriculture.