Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Wahiawa Botanical Garden, 27 acres (11 ha) is a botanical garden on a high plateau in central O ahu, Hawai i, USA. It is one of the Honolulu Botanical Gardens, and home to a collection of tropical flora requiring a relatively cool environment, with emphasis on native Hawaiian plants. The Garden''s site began in the 1920s, when the Hawaiian Sugar Planters'' Association leased land from the State of Hawai i for experimental tree planting. Most of the Garden''s large trees date from that era. The property was transferred to Honolulu in 1950, and opened as a botanical garden in 1957.