Mustard Seeds - Red Komatsuna - Hybrid. Non-GMO. Annual. Brassica rapa var. perviridis. 20-38 days for baby leaf. Cool season. This spinach mustard hybrid is an excellent choice for baby leaf greens. It can also be used for microgreens. The leaf coloring is distinct-- purplish-red on the top and green with red veins underneath. ~ 10,000 seeds / oz.