Beautiful edible grass.  Stalks are essential in Thai and Vietnamese cooking and leaves can be dried for a soothing digestive tea.  Will grow to 3 feet tall.  Plant in a sunny hot location in your yard.  It can also grow nicely in a large container and is drought tolerant.  Bring in for the winter and start again next season.  As I learned from an experienced Vietnamese chef, every year you keep it going, the lemongrass flavor gets more and more intense.