A Chinese specialty also known as purple choy sum. A quick and easy-to-grow Asian green producing lots of long, pencil-thin, red-purple flower stems. Use the leaf, flower buds and stems. A pleasing, mild mustard taste to use raw in salads or lightly cooked in stir-fries. Cold hardy, the purple colour intensifies as the temperature drops. Likes any fertile soil with added organic matter. Pick stems before flowering for continuous use. About 400 seeds.