How do plants know when it's time to grow?
Emma Vanstone
Have you ever wondered how plants know when it's time to grow? It's all down to something called photoperiodism. Plants have internal clocks that detect when daylight hours start to increase. What happens if it's unusually warm but daylight hours are still short? When it's warm but hours of daylight are short, or vice versa, […] The post How do plants know when it's time to grow? appeared first on Science Experiments for Kids .