How Do Plants Know When to Bloom?

Plants use a special kind of clock that counts the days and nights. When it gets longer days, they know it's time to bloom! It’s like a plant has a tiny timer inside it that tells it when to wake up and grow flowers.

How the Timer Works

Inside every plant is a kind of magic sensor that detects how long the day lasts. If the day gets longer, the magic sensor sends a message to the plant's flower parts, telling them to start growing.

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Examples

  1. A tulip knows it's spring because the days get longer and the nights get shorter.
  2. Dandelions bloom in the morning and close at night like tiny sunflowers.
  3. A flower in a greenhouse might start blooming earlier if someone changes the light hours.

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