Golden dragon with five claws was originally grown in America, and its appearance is very confusing, which is really like morning glory (morning glory). It should be noted that golden dragon with five claws has five leaves, so you can't go wrong if you distinguish it according to this feature.

Don't look at the golden dragon with five claws, which is quite small and fresh when it blooms. Its reproductive ability is very strong. Its branches grow prostrate, and it can grow into one piece when it touches soil, trees and walls, which seriously hinders the normal growth of native vegetation.

Compared with its strong invasion ability, morning glory is simply too pure and harmless. Flower friends must destroy the golden dragon with five claws in time when they see it, and don't wait for it to expand, especially in vegetable fields and fields. If it overflows, it will be difficult to deal with.

Yinianpeng

One-year-old Pengyuan grew in South America. It seems to be pollution-free. In fact, it is the most rampant. Now it can be seen everywhere in most parts of the country, whether in rural or urban areas.

If you look carefully, you may find that once a few annual canopies appear in a certain place, a large area will grow the next year, and all other plants will disappear ...

The strong growth ability of the annual canopy not only occupies the growth space of native plants, but also has a signal of "expulsion" to other plants. Don't be fooled by its small and fresh appearance ~

Ambrosia trifoliata

Ambrosia trifoliata, originally grown in North America, has long been among the top invasive plants. This year, the customs also found mixed ragweed seeds in imported oat seeds, and once found, it will be destroyed.

Ragweed looks unremarkable, but its growth is really crazy. It not only occupies space, but also occupies land nutrition, which has seriously affected agricultural production. In some areas with relatively developed agriculture, great efforts are made to eradicate ragweed every year.

In addition to fast growth, ragweed breeds faster. It is reported that a mature ragweed can produce 8 billion grass pollen in 5 hours, which is not only an important element of its reproduction, but also one of the sources of pollen allergy. At present, the scenic spot has been invaded by ragweed, so everyone must protect themselves. Anyone with symptoms of allergy, tracheitis and asthma should wear a mask.

Dwarf ragweed

Dwarf ragweed is also native to North America. It is too similar to wormwood and Artemisia annua. Many people can't distinguish it and don't intervene. It was not until the influence of the invasion began to be exposed that it was also a "malicious" role.

In recent years, many people have been found to be allergic to ragweed, many of which are allergic symptoms found after contact with ragweed, because it is too similar to wormwood, and people will not notice it when they grow at home, and some people eat it by mistake ...

The following picture 1 shows the poisonous ragweed, No.2 shows Artemisia selengensis, No.3 shows wormwood and No.4 shows Artemisia annua. The Dragon Boat Festival is approaching, so don't make a mistake. If you can't tell the difference, you'd better not pick it indiscriminately.

Eupatorium adenophorum

Eupatorium adenophorum is native to Mexico, and it has invaded China for a long time. It also has some grounded names, such as "Defeated Horse Grass". It is said that horses will be poisoned if they eat it.

Eupatorium adenophorum has reddish purple stems and oily green leaves. For small animals, it looks very plump, but in fact it is poisonous and belongs to a very dangerous plant.

Therefore, Eupatorium adenophorum not only occupies the growth space of plants, but also has adverse effects on animals, and it is still in an environment without natural enemies. Only by artificial elimination can it be controlled.

Eupatorium odoratum

Eupatorium odoratum and Eupatorium adenophorum are relatives, and they are also native to Mexico. The biggest difference between them is the color of their stems and their invasion ability is basically the same.

The growth of Eupatorium odoratum is very fierce, and the rate of flowering, pollination and seed setting is very high. It can spread throughout the village in 1-2 years, which is very dangerous for agricultural production.

Some biologists have studied Eupatorium odoratum. Because of the lack of natural enemies, Eupatorium odoratum invading China grows much faster than Mexican origin. It not only occupies the field space crazily, but also absorbs a lot of nutrients from the soil layer. It's really bad ...

water hyacinth

Water hyacinth is native to South America and has natural enemies in the local area, so its growth is limited, and it is mostly cultivated as an ornamental flower. After it was introduced to China, it was found that there were no natural enemies in China, and the water hyacinth was out of control, which was already an invasive plant that everyone hated.

In the south, water hyacinth is cleaned up every summer. If nobody takes care of it, an entire water area will be "paved" with it, and other creatures in the water will suffer, which will affect the lives of people around them.

Fortunately, the water hyacinth has a weakness, that is, it is afraid of cold, so it can only have fun in the south. In the north, it is too cold in winter, and its gourd can be completely frozen to death, and it can't continue to multiply, which also gives the agriculture in the north a sigh of relief.

Alternanthera philoxeroides

Alternanthera philoxeroides, also known as Alternanthera philoxeroides, is native to Brazil. It is a gradual invasion, and it can be seen in north and south, land and water.

Alternanthera philoxeroides is not afraid of cold in winter and heat in summer. It can grow in ponds and grow on land. Its stems can crawl and take root wherever its branches extend.

After Alternanthera philoxeroides takes root, it is difficult to uproot it completely. First of all, it grows very densely and has many roots. Even if the plants on the soil surface are roughly cleaned up, there may be residues in the soil, which is very stubborn.

Mikania micrantha

Mikania micrantha, native to Central America and South America, is a vine that grows very fast. It is said that in the growing period, Mikania micrantha can grow a mile a minute. Whether there are exaggerated ingredients or not, it is surprising to see its actual "expansion" ability.

Mikania micrantha has a strong climbing ability, and especially likes covering growth. As long as the plants covered by Mikania micrantha are limited in growth and malnutrition, they will die directly.

Once Mikania micrantha grows wildly, whether it is flat or swamp, it can cover a large area in a few months, which is very scary for native plants.

Photo author: Self-growing nature

Solidago canadensis

Solidago canadensis is native to North America, and it is common in Canada. When it comes to China, it has no natural enemies and grows recklessly. If one plant is found anywhere, it will be a piece the next year if it is not eradicated.

Solidago has a large inflorescence and a high seed setting rate. It will spread with the wind and birds. It does not pay attention to the environment and can grow even in a very barren and narrow space. As long as it grows and blooms, it can continue to breed in the local area.

Solidago canadensis is extremely fertile. Once it grows in pieces, it is difficult to eradicate it at one time. A robust plant is almost taller than an adult. Even if it is cut down, the seeds that fall to the ground will grow.

wild oat

Originated in Europe, it is very similar to the weeds we saw in the fields when we were young. Wild oats easily compete with wheat for space and nutrition, and it is difficult to eradicate them.

Wild oats have strong viability. It is reported that wild oats can reduce wheat production by 20% or more. No wonder farmers hate it when they see it.

If the growth of wild oat is not controlled artificially, it may occupy the field within 1-2 years, and the seeds are scattered in every corner, which can't be stopped. The root system seriously damages the nutrition of cultivated land and has a very bad influence.

Phytolacca americana

Phytolacca americana, also known as Phytolacca americana, has red stems and clusters of fruits, and the whole plant is toxic. Don't be curious and eat it by mistake.

When the fruit of Phytolacca americana is ripe, it looks attractive with bright black and purple, but don't eat it by mistake. Its fruit, stem, roots and other whole plants are poisonous.

The stem of Phytolacca americana is very big, which will rob the surrounding plants of nutrients and water, and the rhizome is also very toxic. Don't eat it by mistake.

False sorghum

Fake sorghum, which originated in the Mediterranean region, entered China with grain imports. At first, it only appeared in the fields, but now it has been widely propagated, and some urban green belts have also flooded.

False sorghum belongs to Gramineae, and it is difficult to eradicate it with pesticides and herbicides, so the best way to control it artificially is to weed it artificially.

The growth of fake sorghum is very strong, which will deprive the surrounding plants of nutrition and water. Once it is found, it should be pulled out as soon as possible, otherwise there will be endless troubles.

Flaveria bidentis

Native to South America, it is a world-class invasive species, which grows rapidly. If it is discovered in spring, it will spread in a few months.

Photo by: My name is Zhang Yuanbo

Flaveria bidentis will not only occupy the growth space, but also rob the soil of nutrients and water. It is a very powerful invasive plant. Moreover, its roots will also produce a substance that can inhibit the growth of other plants, which is very overbearing.

Therefore, if you meet Flaveria bidentis on the walk, you'd better eradicate it safely, or report it to the relevant departments to contribute to maintaining the balance of the ecological environment ~

guayule

Originated in America, it entered China earlier, and when people began to pay attention to it, it began to flood.

Chrysanthemum morifolium flowers look a bit like white stars all over the sky. Since it has this value, why didn't it turn into flowers? Mainly because of its toxicity, the smell of Chrysanthemum morifolium will inhibit the growth of surrounding plants, which is also harmful to human body and can cause allergies.

However, Chrysanthemum morifolium is afraid of cold, and it is mostly spread in the southern region. If you see it, try not to go alone. In addition to the smell, it may cause allergies, skin contact may also be allergic, itchy and red.

False stinky grass

Eupatorium odoratum is native to South America, and it is also an early species in China. It blooms in summer and many people have seen it, but they just don't know its name.

The fake stinkweed is very similar to Ageratum. The picture below shows the comparison made by netizens. The A side is fake stinkweed, with narrow flower stalks, messy flower heads, small leaves and obvious serrations. On the B side is Ageratum, with round flower stalks, short flower heads and large and regular leaves.

There is no natural enemy in China for the time being, and it grows rapidly, and its smell will "expel" the nearby vegetation. In the end, the whole land is full of it, and it is still a headache to completely eliminate it.

Amaranthus retroflexus

Amaranth retroflexus is also called wild amaranth. Although it is an invasive plant, it is in a similar situation to crayfish. People in China like to eat amaranth in summer, so how can they let it go?

The branches of Amaranthus retroflexus are rough, and the taste is not as tender as domestic amaranthus. The speed of eating Amaranthus retroflexus is much lower than its reproduction speed. As long as no one cares, Amaranthus retroflexus grows into a large area, which seriously occupies the growth space of other plants.

If there is Amaranthus retroflexus in the garden, other crops will suffer. Amaranthus retroflexus will rob the soil of nutrients and water, which will reduce the production of other crops. The best solution is manual weeding, which is very hard work in summer.

Zeqi

Ze lacquer is native to South America. When I was a child, I only saw it occasionally in the fields. Now when I go home, it is everywhere, growing in a large area, and there is a trend of flooding.

Zeqi looks very distinctive, with green leaves and five distinct branches, which are also called five clouds by the people. Euphorbiaceae plant, Euphorbiaceae, has white juice, very sticky feeling, toxic, easy to cause skin itching, allergies, cattle and sheep and other animals eat, but also poisoning flatulence, need to feed salt to detoxify.

The rampant growth of Euphorbia helioscopia not only occupies the growth space of other plants, but also seizes the moisture in the soil, which has a very bad influence on grassland and animal husbandry.

Plantago americana

Plantago asiatica originated in North America and is so common in China that many people think it is the real plantain.

The common plantain in China actually looks like this, with wide leaves, oily green leaves and no white hair.

The leaves of Plantago asiatica in North America are narrow and small, and the biggest feature is white hair.

Plantago asiatica is very barren-tolerant. It doesn't pay much attention to the environment, but will continue to expand and expand, seriously affecting the local ecological environment and destroying plant diversity. Animals that live on other plants will also be implicated.

Horseweed?Herb?

Erigeron breviscapus is native to North America, also known as white wine grass and Erigeron canadensis. It looks very delicate and delicate, unlike being very invasive, and it is also eaten as a wild vegetable in some places.

But don't underestimate it. Although it looks fragile, it is actually not friendly to the surrounding plants. It will occupy the water and nutrients in the soil, and the smell will drive away other plants. There are no natural enemies in China and it grows recklessly.

You can't really feel the strength of erigeron breviscapus until it blooms and bears seeds. A erigeron breviscapus has thousands of seeds, more than dandelion, and eventually it flies all over the mountains.

Cuscuta japonica

Cuscuta chinensis has always been called the "vampire" in the plant kingdom, which shows its power. There are also Cuscuta chinensis in China and an invasive species, Cuscuta japonica, which are equally harmful.

The growth of dodder basically does not need roots. It will take root in the stem of the plant and absorb the water and nutrition of the plant until the plant is hollowed out. Just thinking about this process makes people feel goose bumps.

It can be seen that the damage of dodder to the ecology is very serious. Wherever it goes, no matter how big and strong the plants are, they will suffer. If dodder is found when growing flowers and vegetables, it must be eradicated in time.