55-65 Days to Maturity (after transplanting). Momordica charantia ’Joy Green’. Joy Green Bitter Gourd Seeds. Non-GMO, warm-season, annual, hybrid. These shiny green fruits grow 10-12 inches long. Joy Green is a vigorous grower, high yielder, and disease resistant. Bitter gourds are nutritionally dense and are recommended as a healthy food by the American Diabetic Association. The immature fruits, as well as the young shoots and leaves, are edible. Karellas (bitter gourd) are widely used in Southeast Asia and do well when included in the cuisines of those regions. ~ 140 seeds / oz.