No more bland watermelons! Here’s a sure-fire visual guide to finding the sweetest fruit at the market.

Check the watermelon’s belly button

A watermelon’s navel can also indicate its quality. You’ll notice that some navels are large, others small. It’s recommended to choose watermelons with a small navel. The smaller the navel, the thinner the skin, indicating good ripeness. A watermelon with a large navel may have been picked too early or chemically treated.