National Watermelon Day The first recorded watermelon harvest occurred nearly 5,000 years ago in Egypt and is depicted in Egyptian hieroglyphics on walls of their ancient buildings. ( source ) Watermelon Lemonade Cooler Watermelon Sorbet Slushy Watermelon Mojitos Watermelon Margaritas So many Watermelon recipes!  How Watermelon Can Help Battle High Blood Pressure Benefits of watermelon seeds