Named for its black-green, bruise-resistant rind, this heirloom watermelon averages weights of 35 to 50 lbs. Fruits have bright, cherry-red flesh, and require long, warm growing seasons to fully mature. 25 seeds minimum Germination: 5-10 days Maturity: 90 days Direct sow -1 deep in full sun after last frost or start indoors 3-4 weeks prior to last frost. Harden off seedlings before planting. Watermelon seedlings prefer not to be disturbed; direct sow is suggested. Sow seeds 6 apart. Space plants 18 apart in rows 6-8 apart.