Can grass predict the weather?

"Mimosa is shy and it will rain." In other words, if the leaves of mimosa naturally droop and close, there will be a "shy" phenomenon, which indicates that it will rain. In normal weather, mimosa is generally not shy. Even if people touch its leaves, they close quickly, but they recover quickly. If the weather changes, mimosa itself is very sensitive to temperature. At this time, if you touch its leaves with your fingers, the leaves will close accordingly. If the folding range is not large, the recovery will be quite slow, which indicates that it will turn rainy in a day or two.

Red clover and sorrel can also measure the sky. When the storm comes and the clouds are full, they will automatically fold the leaves, but they are not as sensitive as mimosa, but they will also indicate rain.

"The petiole of thatched grass" spit out "and will work in the rain tomorrow." Thatched grass is a perennial herb with long roots and linear leaves, which is distributed almost all over the country and can be used as feed and paper raw materials. In midsummer, a small mass of water foam will appear at the junction of thatched leaves and stems (petioles), like the foam spit by crabs, indicating that it will rain one day later. Why is this? It will rain, and the air humidity will increase. The closer to the surface, the greater the humidity, and the more water the roots of thatch can absorb. In addition to the needs of supplying various tissues, there are redundant and redundant water that will overflow from the petiole, as if "spitting".

"It rains on a musty day." Bahia grass, called Zoysia japonica, is also a perennial herb, with two leaves in one section and roots growing in the ground one after another. It germinates in early spring every year and withers gradually in the cold dew season. Sometimes there will be a small group of moldy hairs on its petiole, which are white, grayish white or yellowish brown, just like moldy hairs on food. Moldy hair first appeared from the roots and gradually spread to the upper part of the stem. After a few days, the moldy hair gradually increased and finally fell to the ground. This is a good sign of rain. Zoysia japonica is characterized by drought tolerance. Zoysia japonica, which grows in a place with sufficient water, will also be mildewed in normal weather. Zoysia japonica, which grows in dry places, has a good indication for forecasting the weather. Especially in Huangmei season, the effect of forecasting weather is better.