A strange grass abroad will run away when it is uprooted in dry season. Americans have a headache, but they don't know its true value.

When it comes to the desert, what immediately appears in front of most eyes is the boundless yellow sand, dead and lifeless, but in this dead silence, it has nurtured such a maverick plant, tumbleweed.

Wind rolling grass, also known as Russian sand canopy, is a very strange weed abroad, they are prickly, unstable, drifting around. At first, the tumbleweed was a small seedling. They germinated in late winter, and in summer they grew into balls. Their flowers grew among the prickly leaves, and each flower grew into a fruit containing a seed. This kind of fruit looks like a cherry but does not have the good taste of a cherry. The cherry tree is very lucky. The bird will eat its fruit and take it away and help it spread the seed. Unlike tumbleweeds, they do not rely on animals to spread seeds, they have their own unique solutions.

Whenever the drought comes, the tumbleweed will dry up and die, but their seeds are still there, and a breeze can easily break the dead tumbleweed from the root, and there is a special cell membrane at the bottom of the plant. so it is not as resilient as the roots of most plants, causing the breeze to break it easily.

The skeleton of tumble grass gradually detached in the wind, and thousands of seeds were shaken and dropped in the process of rolling. In fact, rolling grass is also an invasive species, which is found in China, the United States and other countries. Every autumn, you can see them in northwest China and the western United States, like western cowboys, rolling along with the wind. Gradually spread in the open. Rolling grasses use natural wind energy to spread seeds for them, which is why their fruits are not delicious but can grow arbitrarily.

Unfortunately, however, it is precisely because of their strong reproductive ability that they are regarded as a weed in the United States. they walk freely along the highway with the wind, avoiding passing vehicles. and often entangled with the irrigation system causes confusion to farmers, and some can even roll into the community and pile up as a fire hazard, thus giving Americans a headache. Tumbleweeds do not take root in green lawns because they cannot compete with highly reproductive plants like grass.

However, many people do not know, although rolling grass is a headache, but it has a very good value, according to records, the whole grass can be used in medicine, with antitussive and expectorant effect, and the effect is also very good.

So whether these weeds are annoying or not, they all have their unique value.

Dear friends, have you ever seen tumbleweed? Welcome to leave messages and exchange messages!