(Pak Choi) (B. rapa chinensis) 50 days. Quick-growing heirloom makes excellent baby greens and grows from seed to a hearty 2-lb head in 7 weeks. Dark green leaves and crunchy tasty bright white stems. Good in kimchi. Also savory steamed, stir fried or braised. Did great in our spring 2017 Asian green trials, and it’s even more productive when planted for fall harvest. Pkt (2 g).