Delicious 51 Cantaloupe/Melon Seeds Heirloom Vegetable. A nearly round, very tasty, open pollinated melon with thick, firm, orange coloured flesh. Fruits average 15 cm (6″) in diameter with an average weight of 1.1 kg (2.5 lbs) when fully ripened. Delicious 51 is an excellent variety for home gardeners especially those growing in cool climates.