Originating in Southern China, celtuce is botanically a lettuce. Harvest when the edible stem thickens and reaches a length of 8–10". The tender stems have a flavor that is mild to slightly bitter, and are typically sliced and used in stir-fries and soups. Crops grown in cool weather will be milder. The young leaves may also be used in salads. Grow just like head lettuce. MT0-30. Avg. 25,250 seeds/oz. Packet: 500 seeds.