Siam Tulip Plumeria . There is a festival honoring the siam tulip held every summer in northern thailand. Native to northern thailand, cambodia and laos this popular indoor plant is not a member of the tulip family but the ginger family. Siam Tulip from www.pinterest.com I have been selling plumeria and other tropical plants for 18 years! At the markets we saw short plants with huge inflorescences. You will receive a rooted plumeria plant of siam tulip”.