Yates Seeds is known for providing high-quality seeds; Watermelon Charleston Grey seeds are carefully selected for their viability and ability to produce robust watermelon plants., Charleston Grey watermelons are known for their large size and juicy flesh; can grow to a substantial weight, typically ranging from 20 to 30 pounds (9 to 14 kilograms) or even more., Charleston Grey is often available as a seedless watermelon variety. This means that the watermelons typically contain few to no seeds, making them convenient to eat and enjoy.