Slimy
Mushy
Sticky
then it has likely begun to decay. Fresh fruit should never feel slippery or gooey.
3. Dull or Discolored Flesh
A ripe watermelon typically has a bright pink or deep red color. While shades can vary slightly between varieties, be cautious if you notice:
Brown spots
Dark patches
Pale or faded areas
Discoloration often means the fruit is aging or bacteria are starting to develop.
4. Visible Mold Growth
Mold is one of the most obvious and serious warning signs. If you see:
White fuzzy spots
Green mold
Black patches
on either the rind or the flesh, discard the entire watermelon immediately.
Do not attempt to cut away the mold, because microscopic mold roots can spread throughout the fruit.
5. A Fizzy or Bubbling Taste
Sometimes spoiled fruit looks normal but tastes unusual. If the watermelon feels tingly or slightly carbonated, it is likely fermenting.
Fermentation happens when bacteria or yeast begin breaking down sugars inside the fruit. Once this occurs, the watermelon should not be eaten.
