A popular Asian cooking ingredient, lemon grass is very ornamental. You can use either the stems or the leaves in cooking. Its flavor, while strongly lemon, is unique to the plant. It wants full sun and will grow to 3 feet, making a strong clump. It is a tropical plant and requires freeze protection, so mulch heavily, plant in a protected place and be prepared to cover it. Most growers recommend dividing annually. I must comment though that I grew mine in a pot. Getting a stem was a real challenge so I can’t recommend growing this in pots.