You slice open a watermelon and find cracks, hollow spaces, or a spongy interior. Before tossing it — or eating it without a second thought — it helps to know what those abnormalities actually signal. Experts say internal cracking has several possible causes, and the cracks themselves are rarely the main thing to worry about.
Hollow heart: a natural phenomenon with several causes
The technical name for internal watermelon cracking is hollow heart. According to experts, it can develop when the fruit experiences rapid temperature changes, uneven watering, poor pollination, or unusually fast growth during the growing season.
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