In the twinkling of an eye, it's the annual catkins season again. With the recent rising temperature, catkins also begin to float for more than half a month. Is catkins flying very annoying? So why do catkins float? Let's see why?
Why do willows float catkins?
Catkins are the seeds of willows. At one time, they must spread their seeds through the wind, and catkins are their seeds. The seeds of Aeolian flowers are generally lighter, so they will spread with the wind. In short, this is a way of propagation of willows. In a certain season, willows will spread their seeds through scattering catkins. Catkins are abnormal skin.
The role of catkins is that willows have evolved to spread seeds by wind. In this way, poplar can be more widely spread. And not all grow in the same place, affecting photosynthesis, similar to the spread of dandelion seeds.
Why not catkins at night
There are three reasons why catkins don't exist at night
1. During the day, the catkins from the sun fall, and there is dew at night, so they won't fall.
2. The temperature difference between day and night is slightly higher in the daytime and lower at night. The temperature starts to rise after the sunlight in the morning, and the catkins begin to increase.
3. The relative humidity is high in the morning and evening, and it is usually sunny at noon. Poplar catkins can't float when they are wet, but when the air is dry at noon, the sun is good and the relative humidity is small, mature poplar catkins will float with the wind.