How Do Plants Know When to Bloom in the Spring?

Plants use a special kind of timer that starts in the winter. When it gets dark outside, they count the days until there's enough light again. Then, like magic, they bloom! This timer is inside their leaves and helps them know when to grow. It’s as if they have a little clock that tells them, 'It’s time!'

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Examples

A daffodil stays hidden under the snow all winter until it sees the sun again in spring.
A tulip knows when to grow because it counts the number of days with more light.
Like a person waiting for their birthday, plants count days and know when it’s time to bloom.

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Categories: Biology · plants,biology,seasons