These are all environmental factors that can occur without any human intervention. The condition affects the texture and eating quality of the fruit, but does not automatically make it unsafe to consume.
A watermelon with hollow heart may taste less sweet or have a drier, less satisfying texture — but absent any other warning signs, it is not considered a food safety issue.
What is hollow heart?
Hollow heart is an internal condition in watermelons characterized by cracks or empty spaces inside the flesh. It develops during the growing phase and is linked to environmental stressors such as temperature swings and irregular irrigation. The condition is distinct from spoilage and does not involve pathogens.
Growth regulators: online claims versus what experts actually say
A persistent claim circulating online links every cracked watermelon to excessive use of plant growth regulators — agricultural chemicals used in some regions to boost crop yields. Experts push back on that blanket assertion.
Growth regulators have legitimate agricultural uses. When applied according to regulations, they are designed to support proper crop development. The concern arises specifically with improper use or misuse, which experts acknowledge has occurred in some cases.
Critically, consumers have no way to determine the cause of internal cracking simply by looking at the fruit. Experts therefore advise focusing on the watermelon’s overall freshness rather than treating cracks as automatic evidence of chemical misuse.
