|'Jade Star' is generally ready for harvest 90 days after sowing. Plants yield 3 to 4 fifteen pound melons each. Fruits are oval or round, with dark green rinds and deep red flesh. Seeds are brown. 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.