500+Chinese Cabbage seeds Pak Choi Kuai Cai Fast Grow Cabbage USA The variety has a vigorous loose head,the thick leaves are light green, frilled and slightly serrated, wide and white stem. Chinese “Kuai Cai” means this variety can grow fast, harvest at any stage as microgreens to full maturity( about 20-50 days).It’s wonderful for stirring fry, or salad greens. Sowing: Prepare the soil with compost or organic matter.Chinese Cabbage prefers full sun or partial shade, and grows best in temperatures from 45-75 degree F(7-24 degree C). Direct seeding works best, about 4-6 weeks before the last average frost date. Plant seeds about 15 inches apart in rows and about 20 inches apart. Germination should take place in about 10 days. Growing: Keep the soil evenly moist for the healthiest growth. If the sun gets too hot,chinese cabbage tends to ‘bolt’ or go to seed. In long periods of heat, some kind of shade may be helpful.