25+ seeds GMO Free Sugar Baby Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, mini watermelon. The Sugar Baby watermelon is a smaller oval-shaped dwarf variety that still boasts the same amount of sugar and sweetness as a watermelon 4x its weight. 75-80 Days to maturity. Citrullus lanatus. Sugar Baby Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, mini watermelon. Suitable for growing in garden plots and large containers (minimum 7 gal soil). Early to mature and harvest, the Sugar Baby watermelon is a smaller oval-shaped dwarf variety that still boasts the same amount of sugar and sweetness as a watermelon 4x its weight. Sugar Baby matures to a tight 6-8" across and about 8-10 lbs at harvest. Sugar Baby melon is most recognizable by its solid matte green, nearly black skin.