Lemon grass is a perennial grass of poaceae  family.

The strap-like leaves are0.5-2.5 cm wide, about 90 cm long and have gracefully drooping tips. The  evergreenleaves are bright bruish-green and release a citrus aroma when crushed. Leaf arrangement; most emerge from the soil, usuallt without a stem. The leaves aare simple, entire, linear, with parallel veins , fragrant of 90-150  cm long.

 Essential oil. Studies indicate that Cymbopogon citratus possesses various pharmacological activities, such as anti-amoebic, antibacterial, antidiarrheal, antifilarial, antifungal and ant-inflammatory properties

The lemom  grass is used to flavor  food in southeast Asia. In Rwanda

                                  it is used to flavor tea and for fragrance.