In 2007 Oklahoma declared the watermelon to be their official state vegetable. Most consider the watermelon to be a fruit, but the watermelon does come from the cucumber and squash family which are considered to be vegetables.
How to grow a square watermelon. I have you seen the cube shaped watermellons coming out of Japan? they are easier to ship. They grow them inside a box. If you wanted to do it at home you can use a cinder block.