35-40 days to maturity.Brassica rapa var chinensis. Da Cheong Chae Hybrid Pak Choi Chinese Cabbage Seeds. Non-GMO, cool-season annual, hybrid. This variety has qualities of both Tatsoi and Pak Choi--round, dark green leaves and an upright growth habit. Harvest individual leaves for salad or the whole plant for cooking. It can be grown all year round in mild climate areas and is rich in essential vitamins and minerals. Great for open-field growing. Very attractive in flower beds. Not recommended for container gardens. ~ 6,000 seeds per oz.