Congo Heirloom Watermelon: This variety dates back to hundreds of years and is native to south Africa. These grow huge, about 30 to 35 pounds average for southern, hotter climates and about 15 to 20 pounds in northern climates. The Congo watermelons are great to grow in a family garden. They will produce great big watermelons that will have the kids talking about 20 years later. To our farmers market friends, these make for awesome cut melon sales. Buy some bulk Heirloom seeds today! Happy growing!!!