According to the experts the last extensive study of flora in the biodiversity-rich, Meghamalai have been conducted in the early 1980s. Since then, no comprehensive research has been done on the vegetation. Vegetation ranges from scrub forests at the foothills, ubiquitous expanses of tea and coffee estates, to spice (pepper, helllcardamom, cinnamon) plantations and finally to the dense evergreen forests at the top.