|'Black-seeded Ice Cream' is an heirloom variety of watermelon. It is light green and faintly mottled, with pink flesh and black seeds. Its rind is very thin, making it unsuitable for shipping. Sweet flavor. Watermelons generally do best in warm climates. Cool weather will not produce good fruits, but some of the adversity of cool weather can be overcome by starting seeds early indoors, and transplanting them out at the height of summer. Plastic groundcovers are highly recommended to increase soil temperature in the spring, and rowcovers will help the crop ripen in the fall.