30. Blueberry: Counting Chill Hours
Blueberry plants have a built-in clock for counting chill hours—the cumulative time spent below a specific temperature during winter. Only after reaching this threshold do they initiate flowering.
This precise timing ensures that blooming takes place after winter’s risk has passed, greatly improving the chances for successful pollination and fruit set.
Blueberries’ ability to track cold exposure highlights yet another layer of mathematical intelligence in plant life.
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