Though they taste very sweet, melons contain so much water that they have only as many calories as an onion (pound for pound). Watermelons, cantaloupes and Honeydew melons are easily digested and provide a source of potassium and vitamin C. Melons with deep-orange flesh are also an excellent source of beta carotene. Try growing our cool season melon seeds this season. Be sure to follow our West Coast Seeds How to Grow Melons from Seeds instructions.