Cymbopogon citratus, commonly known as lemon grass or oil grass, is a tropical plant from South Asia and Southeast Asia.
Cymbopogon citratus is often sold in stem form. While it can be grown in warmer temperate regions (such as the UK), it is not hardy to frost. The leaves of Cymbopogon citratus have been used in traditional medicine and are often found in herbal supplements and teas. A myriad of effects have been attributed to both their oral consumption and topical use, with modern research supporting many of their alleged benefits.