Crimson Sweet produces round melons averaging 25 lbs. with light green and dark green stripes. This melon is even prettier on the inside, with exceptionally deep red flesh that’s sweet and luscious. Crimson Sweet vines need room to grow, spreading up to 10 ft. long. After planting water frequently, allowing the surface soil to dry between watering. Mulch your watermelon plants to conserve moisture and help keep the watermelons clean. Your watermelons are ready to harvest when the fruit has grown to full size.