70 days to Maturity (after transplanting). Momordica charantia ’Green Skin’. Green Skin Bitter Gourd Seeds. Non-GMO, warm-season, annual, hybrid. This is an excellent, open-pollinated, Chinese bitter gourd that produces fruit 8-10 inches long and 3 inches in diameter. It has green skin with large smooth warts. The leaves and leafy shoots are also edible; recommended as a healthy food by the American Diabetic Association. Approx 195 seeds / oz.