Perennial Herb: Native to East India. The strongly lemon-scented leaves are used in cooking. They are good in stir-fry, with seafood, in soups, curries, sauces, pickles and tea. Cut into pieces before freezing. Grow in garden or in containers. Exposure: sun. Water: moderate. Height: 5 feet. Width: 3 feet. Protect plant from freezing in winter.