Botanical gardens and arboreta in Thailand are operated by public agencies as well as private owners. The main state agencies that maintain botanical gardens are the Department of National Parks, Wildlife and Plant Conservation (DNP), which operates 18 botanical gardens and 53 arboreta throughout the country, and the , which operates five botanical gardens in Chiang Mai, Khon Kaen, Phitsanulok, Sukhothai and Rayong provinces.