The watermelon is a long-trailing annual plant. Watermelons can be solid green or striped green and white. Watermelons can be oval, oblong, and round. Fruits can weigh from 10 or 15 pounds to more than 100 pounds and are commonly 30 pounds or more. The watermelon has a thick, solid rind with sweet, succulent flesh that can be pink, red, yellow, orange, or grayish white. Male and female flowers appear on the same vine