Sugar Baby watermelon Citrullus lanatus, or Sugar Baby watermelon, is an incredibly productive grower as well. Sugar Baby melons are round “picnic” or “icebox” watermelons perfect for small families and as the name suggests, small enough to fit into the icebox. They weigh in at between 8 to 10 pounds (4-5 k.) and are 7-8 inches (18-20 c.)
