90-97 Days to maturity. Citrullus lanatus. Jubilee Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. These big hybrid varieties can grow anywhere from 25-40 lbs and need a longer growing season. Jubilee Watermelon seeds benefit from rich compost, mulch, and a sunny location. The heat will help these oblong-shaped melons ripen and become sweeter. Just as gardeners are nearing their end-of-summer harvest, these heirloom watermelons will be ready to be the center of your sweet celebration, a real Jubilee! ~300 seeds/oz.