Vetiver is a perennial grass and it is native to india. Vetiver is also called "khus" in northern india and it is very popular there. Vetiver grass is grown for it's many uses. It is used to control soil erosion, offer crop protection from pests, roots are used to make mats and in perfumery, etc. In the west, vetiver is famous for it's essential oil. "khus syrup" made from the roots of vetiver is famous in india.