The Lemon grass - Cymbopogon is good food and medicine. Lemon grass are perennial species and it is oily grass. It smells fresh, lemony, earthy, and sweet due to the presence of citronellal, citronellol, and geraniol are its active ingredients. The lemon grass tea relieves stress & anxiety Drinking lemon grass tea it reduces cholesterol & helps to activate the immune system. Most importantly, it is an excellent mosquito repellant plant.