If you like lemongrass herb in your soups and seafood dishes. You can grow your own lemon grass in your garden. In fact lemon grass can be easily grown in your garden. Lemongrass is used for treating digestive tract spasms, stomachache, high blood pressure, convulsions, pain, vomiting, cough, achy joints (rheumatism), fever, the common cold, and exhaustion. It is also used to kill germs and as a mild astringent.