80 days maturity. Glycine max 'Kouri'. Kouri Soybean Seeds. Heirloom, Non-GMO. Warm-season annual. Open-pollinated. Brown-seeded soybeans are uncommon in the United States. They are highly prized in Japan for their sweeter and nuttier flavor compared to the traditional green/tan seeded soybeans. Even though the seed for planting is brown, you will find the color of the bean dark green at harvest and it retains this color when cooked. The bushy plants are early maturing and need warm day and cool night temperatures for good results. Approx. 175 seeds / oz.