The purpose of this paper is to report the situation of ornamental plants in Thailand. The production and marketing of Thai ornamental plants were investigated by visiting and interviewing leading ornamental plant growers and analyzing statistical data. In 2014, The Netherlands was the leading exporter of ornamental plants with 47% share of the total value of 9.4 billion US$ exported worldwide while Thailand ranked the 22nd with 0.4% share, yet it is still the leader among ASEAN countries. Production area of Thai ornamental plants was estimated at 3,100 ha with export value of 38.1 million US$ in 2014, which was 13.7% growth from the previous year. Orchid was the most important ornamental plant export from Thailand which has 61.5% share of the total export value, followed by Sansevieria, Musa, Dracaena, Zoysia, Bougainvillea, Euphorbia, Ixora, Hoya, Plumeria, Aglaonema, Adenium and bromeliads among these were 90.4% plants, 9.3% flasks and 0.3% seedlings. Important factors contributing to the success of the Thai ornamental plant industry were suitable climate, skillful growers, organized growerRSQUOs groups and organizations, improved transportation facilities, lower cost, good quality and rapid multiplication plant materials through tissue culture, continuous supply of new cultivars through breeding, mutation, introduction and better production management in plastic or shade houses.