Cymbopogon martinii is a species of grass in the genus Cymbopogon (lemongrasses) native to India and Indochina, but widely cultivated in many places for its aromatic oil It is best known by the common name palmarosa (palm rose) as it smells sweet and rose-like. Other common names include Indian geranium, gingergrass, rosha, and rosha grass.
Palmarosa oil is the essential oil of Cymbopogon martinii, which contains the chemical compound geraniol, is valued for its scent and for a number of traditional medicinal and household uses. Palmarosa oil has been shown to be an effective insect repellent when applied to stored grain and beans, an antihelmintic against nematodes, and an antifungal and mosquito repellent.
Palmarosa oil, which has a scent similar to roses, is added to soaps and cosmetics.