45 Watermelon Seeds - Giant - Black Diamond Heirloom

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Black Diamond Watermelon Seeds. 90 Days to harvest. Annual, Heirloom, Non-GMO, Open Pollinated. Citrullus lanatus. Developed in Arkansas in the 1950s. Called black diamond because of its deep, dark green skin, it contrasts beautifully with intensely bright red flesh The melons are large an oval shaped. Watermelons have a long growing season and do best when started indoors. Transplant outdoors after hardening off plants, and after the last frost has passed. Make sure Watermelons are exposed to full sun all growing season, and water when the soil is dry. Black diamond watermelons are ready to harvest in 90 days.