40 seeds. 85 days. Citrullus lanatus. Annual.
 
Watermelon 'Crimson Sweet' has attractive striped fruit that can grow up to 20 pounds. It has crisp, red flesh that is full of the classic watermelon taste. This American heirloom is also disease-resistant.
 
Sowing Watermelon Seeds: 
 
Sow seeds outdoors after the last frost date when the soil is warm, 1/2 inch deep. Sow in hills that are spaced 5 feet apart and thin to 3 plants per hill, or sow in rows 2 feet apart. Full sun.
 
Photo courtesy of Diane's Flower Seeds