77-80 Days to maturity. Citrullus lanatus. Striped Klondike Blue Ribbon Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. First bred in California, these durable plants can withstand slightly cooler summer temperatures and are able to adapt and tolerate sunburn. Although these melons are seeded, the texture of Klondike Striped Blue Ribbon Watermelons is smooth and produces a less fibrous fruit. These heirloom plants can grow up to 30 lb oblong fruits. ~410 seeds/oz.