Jamrosa is a grass hybrid-Cymbopogon nardus var.confertiflorus x Cymbopogon jwarancusa. Jamarosa essential oil is most commonly used as a natural fragrance compound. Jamrosa oil consists of geraniol and geranyl acetate.The oil has a rosy-grassy odour with a terpenic bynote, which is not so sweet rosy as palmarosa oil Jamrosa oil has been traditionally used as a perfumery compound when requiring a rose character.Â