Cabbage Seeds - Pak Choi - Nabai Spring - Hybrid. Non-GMO. Annual. Brassica rapa Chinensis group. 45-50 days. Cool-warm season. This is a dwarf or baby pak choi type. It grows 4-6" tall, short, compact with nice shape. Leaves are dark green with pure white petioles. Tolerant to cold and heat, slow bolting. Resistant to disease. Can be planted in spring, summer and fall. ~ 4,000 seeds per oz.