Lemongrass, also called Java citronella, is a medicinal herb native to Vietnam and Indonesia. It has long narrow leaves, linear stems and inflorescences. This long and perennial herb also has a fresh citrusy smell similar to that of lemon balm. lemongrass essential oil is popularly used in aromatherapy thanks to its multiple virtues. Analgesic and anti-inflammatory, it is effective against tendonitis and rheumatism. It also has deodorant qualities and is known as an extremely powerful lice, flea and mosquito repellent.