Cymbopogon citratus (Lemon Grass) is a tropical, clump-forming, evergreen grass with a richly aromatic lemon fragrance. Widely used for cooking in Thailand, Vietnam and other Southeast Asian countries, Lemon Grass features narrow, leafy stalks with gracefully arching, strap-shaped, pale blue-green linear leaves, up to 90 cm long. The leaves exude a strong lemony fragrance when bruised. Sprays of green and pinkish brown flowers appear in late summer and fall, but are rarely seen when grown under glass. The leaves and the essential oil of Lemon Grass have been used for many years in herbal medicines to relieve spasms, treat digestive ailments or arthritis pains.