Where in the world can you find vanilla plant in humid places?

: Main article: Vanilla (orchid) The main species harvested for vanillin is Vanilla planifolia. Although it is native to Mexico, it is now widely grown throughout the tropics. Madagascar is the world's largest producer. Additional sources include Vanilla pompona and Vanilla tahitiensis(grown in Tahiti and Niue), although the vanillin content of these species is much less than Vanilla planifolia.[13]