How Do Plants Secretly Talk to the Sun?

Imagine you're a plant, and the sun is like your favorite teacher. Every day, you look at how much time the teacher spends with you, that's called light cycles. If the teacher stays longer in the morning (long days), you know it's summer and time to grow more leaves or flowers. But if the teacher goes home early (short days), you know it's winter and it's time to rest.

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Examples

  1. A dandelion knows it’s time to bloom when the days get longer in spring.
  2. An oak tree goes dormant in winter because the sun sets early.
  3. The morning glory flower opens only when there's enough sunlight.

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