Lemongrass is an herb that is native to Sri Lanka and South India but now grows in many countries around the world. The plant’s stalks are a common ingredient in Asian cooking, but it is also possible to brew lemongrass to make tea.

Citronella grass  grow to about 2 metres (6+1⁄2 feet) and have magenta-colored base stems. These species are used for the production of citronella oil, which is used in soaps, as an insect repellent (especially mosquitoes and houseflies) in insect sprays and candles, and in aromatherapy. The principal chemical constituents of citronella, geraniol and citronellol, are antiseptics, hence their use in household disinfectants and soaps. Besides oil production, citronella grass is also used for culinary purposes, as a flavoring.

In India, C. citratus is used both as a medical herb and in perfumes. 
Lemon grass has several health benefits like Relieving anxiety, lowering Cholestrol, preventing infection, boosting red blood cells, relieving bloating.