80-90 Days to maturity. Cucumis melo. Planters Jumbo Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in containers, garden plots, raised beds, and greenhouses. Resistant to Downy Mildew and Powdery Mildew. The Planters Jumbo variety of cantaloupe is a large melon, weighing four to five pounds, with a sweet taste. Planters Jumbo does well in wet or dry conditions and is a favorite with growers. Firm rind and sweet, deep orange flesh. This melon variety was developed to grow in hot, humid climates. Melons are 7 by 6 inches and average 4 to 5 pounds each. ~1,000 seeds/oz.