The credit for introducing lemongrass to the world goes to Sri Lankan researcher JF Jovit, who brought the plant from South India. In its native regions of South Asia, Southeast Asia and China, it is well known for its ability to reduce a fever, promote digestion, improve circulation, fight infections and balance irregularities in the menstrual cycle. Besides all this, it is a favourite flavouring agent in many meals, particularly in Southeast Asia, where it also makes for a refreshing herbal tea. To top it all, the scent of this lemony herb is said to encourage mental openness, making lemongrass perhaps the most versatile essential oil in your medicine cabinet.