Melons may differ in their vitamin and mineral contents. Watermelons are high in lycopene (important for our cardiovascular and bone health). Cantaloupe contains vitamins A, B6, and C, potassium, dietary fiber, folate, niacin, pantothenic acid, and thiamine. Honeydew contains more vitamin C than cantaloupes (14). Casaba melons are also rich in vitamin C, vitamin B6, dietary fiber, vitamin K, potassium, and copper. Crenshaw melons add vitamin C, iron, and calcium to your diet (15).