You may also head to the PB Valley Khao Yai Winery, said to be largest vineyard in Khao Yai. Apart from holding professional guided Winery Tours, it also holds the PB Flower Park, showcasing seasonal flower gardens and fruit orchards, including that of dragon fruit, passion fruit, mangoes and Japanese Melons. The floral park consists of 9,999 marigolds in the shape of the Thai number nine to honour the much-revered late King Bhumibol Adulyadej. There are more than 60 kinds of flowers and flowering trees that will blanket the 16-rai park with some of the prettiest colours. They also have an annual grape harvest festival in February, 2018.