how heavy each fruit feels for its size.
A creamy yellow ground spot can be a particularly useful maturity clue. A relatively dull rind and dry stem may provide additional information, while tapping can be used as a secondary comparison.
At the same time, be skeptical of claims that every brown line guarantees sweetness, that round and oval watermelons represent “female” and “male” fruit, or that the size of the “belly button” can prove sweetness or chemical treatment.
The smartest approach is not searching for one secret sign. It is
