Queen Sirikit Botanic Garden (QSBG) is a botanical garden in Mae Rim District, Chiang Mai Province, Thailand. It was opened in 1993[1] and is maintained under the auspices of the Botanical Garden Organization (BGO) of the Ministry of Natural Resources and Environment.[2] Originally called the Mae Sa Botanic Garden, it was renamed for Sirikit, Queen of Thailand, in 1994.[2]
1996 The government increased budget from 22 millions bath to 253 millions bath and 225 millions bath in 1997 and 1998 results in it became the best garden in Thailand[3] and held Royal Flora Ratchaphruek 2006
The 1,000 hectares (2,500 acres) site is home to twelve greenhouses,[4] placing the establishment among Thailand's largest glasshouse complexes. QSBG spreads over a vast area, from a hilly region near to the river Mae Sai (at an elevation of approx. 500 m (1,600 ft)) to the site's highest point, at 1,200 m (4,000 ft). Evergreen and dipterocarp trees occupy lower elevations, while pine forest is found in higher areas.[5] QSBG displays plants and flowers year round. It was Thailand's first botanical garden built according to international standards.[1] It focuses on strengthening ex situ conservation of valuable Thai flora. The breeding programs for native Thai orchids are some of QSBG's most prominent efforts.[6]