Lemongrass is a plant. The leaves and the oil are used to make medicine.
Lemongrass is commonly taken orally, applied directly to the skin, or inhaled as aromatherapy for many different conditions. But there is limited scientific research to support any of its common uses.
In food and beverages, lemongrass is used as a flavoring. For example, lemongrass leaves are commonly used as "lemon" flavoring in herbal teas.
In manufacturing, lemongrass is used as a fragrance in deodorants, soaps, and cosmetics. Lemongrass is also used in making vitamin A and natural citral.
Growing lemongrass is as simple as taking your rooted plant out of the water and putting it into a pot containing all-purpose soil, with the crown just below the surface. Put this pot of lemongrass in a warm, sunny spot on a window ledge or out on your patio. Water it regularly. If you live in a warm climate, you can plant your lemongrass plants out in the backyard in a bog or pond. Of course, growing the plant indoors is nice for having easy access to the fresh herb whenever you need it.