Geranium essential oil is derived by steam distillation of the leaves of Pelargonium graveolens, a plant species native to South Africa. According to folklore, it was used for a wide range of health conditions. Geranium oil is grown in many regions, including Europe and Asia.Rose geranium essential oil is a type of essential oil commonly used in aromatherapy. Sourced from the flowers and leaves of the Pelargonium graveolens plant, rose geranium essential oilis said to offer a variety of health benefits. Rose geranium essential oil contains a number of compounds thought to enhance health, including citronellol and geraniol.