Jumbo Cantaloupe Seeds - Muskmelon seeds - Hales - Rock Spring Cantaloupe melon Seeds - Honeyrock Sweet Melon Fruit Seed - Spanspek Tuscan - Honey Rock Melon seeds - Heirloom Non-GMO. Cucumis melo Life Cycle: Annual Light Requirement: Full Sun Planting Season: Warm Season Plant Type: Vining Features: Heirloom Fruit Size: 3-6 lbs Days to Maturity: 85 Days Plant Spacing: 2-3 feet Planting Depth: 1 inch Sowing Method: Start Indoors, Direct Sow Hardiness Zones: 2, 3, 4, 5, 6, 7, 8, 9, 10. Cantaloupe seeds are middle-sized seeds found inside the fleshy sweet fruit Cantaloupe. The cantaloupe is a type of true melon with sweet, aromatic, and usually orange flesh. Originally, cantaloupe refers to the true cantaloupe or European cantaloupe with non- to slightly netted and often ribbed rind. Today, it also refers to the muskmelon with strongly netted rind, which is called cantaloupe in North America, rockmelon in Australia. Cantaloupes range in mass from 0.5 to 5 kilograms.