70 Days to maturity. Cucumis melo var conomom. Katsura Giant Pickling Melon Seeds. Non-GMO warm-season annual heirloom. This pickling melon is a large, light green, oval-shaped melon that is prized in Japan for pickling. It's easy to grow, though it does need some room! The vines are long, usually 10 feet or so. The melons themselves are up to 14 inches long and 5 inches wide. The flesh is white with a distinct sweet and sour taste. It's a native tropical plant and is best grown in warm or even very hot weather. Approx 1,800 seeds / oz.