5632 - Wintermelon: 83 days. A keeping watermelon, fruits are pale greenish/white skin color and pale pink flesh. While tasty and a super treat in mid-winter, they are very seedy. They need to be picked just prior to complete ripeness and carefully wiped off to remove surface fungi. Sometimes a mild bleach solution works well. Place them where they are not touching each other in a cool storage area where it is around 50 deg. F.