Posts tagged "Japanese Knotweeds"

Why We Ought To Eradicate Japanese Knotweed

Likewise called in other names such as elephant ears, monkeyweed, fleeceflower, pea shooters, and Himalayan fleece vine, Japanese knotweed is a nonwoody destructive plant that belongs to the species of Polygonaceae.  It is native to lands in eastern Asia such as Japan, China, and Korea.

The plant is said to have many uses.  These include being a good origin of vitamins and minerals for instance the vitamins A and C, phosphorous, potassium, zinc, and manganese.  It is also known to be an origin of reservatol, a compound that helps lessen LDL or bad cholesterol and slow down the inception of Alzheimer’s disease. 

Despite its uses, still, why is it that attempts are exerted to eradicate the Japanese knotweed? 

This can be referred to the original habitat of the plant, which is of volcanic and harsh conditions.  It was then introduced to Europe and the United States in the 19th century and it was used as decorative plants and likewise to stop soil erosion.  However, what was supposed to be a helpful plant has been established to be truly harmful.  What’s more, laws have been executed regarding this infamous plant genus.  These include the Wildlife and Countryside Act (as amended) 1981, The Environmental Protection Act 1990, The Environmental Protection (Duty of Care) Regulations 1991, and the Third party litigation, where reparation can be required from someone that permits the plant to thrive onto other properties.

The World Conservation Union has chosen Japanese knotweed as one of the world’s one hundred most horrible species.  And, the group has all the basis to do so.  Once it is introduced to a specific area or property, eliminating it can be such a complicated task.  It reproduces through small parts of root and stem prunings.  This indicates that if you happen to dump even a small part of the roots beneath the surface of the ground that part can continue to grow as a new plant.

Moreover, this plant has the power to grow through drains, walls, and even concrete walls.  Apparently, it can create a good deal of harm to concrete buildings.  Land valuation has a tendency to decrease when a specific land area is covered by this destructive plant.  It likewise causes problems to gardeners since it can take over in the garden and prevent other plants from breeding.

It is then no surprise why lots of people invest on the elimination of Japanese knotweed.  Nevertheless, proper attention should be exercised when trying to eradicate the plant.  Rather than eradicating it, you may be helping its spread.  To make certain that you do not do this, obtain recommendations from professionals or hire the services of a firm that narrows down on the correct elimination of the perennial plant.

Posted by gardening - September 5, 2009 at 6:13 am

Categories: Gardening   Tags: , , , , , , ,

A Benefit Or A Burden: The Two Aspects of Japanese Knotweed

With a scientific name of Fallopia japonica, Japanese knotweed is a nonwoody plant that is local to eastern Asia, specifically in China, Japan, and Korea.  It has empty stems with distinct nodules, making it look like a bamboo, even if the two plants are not directly related.

Even if the most frequently used scientific name of the plant today is Fallopia japonica, it is also known in other scientific terms: Polygonum cuspidatum and Reynoutria japonica.  The latter is its oldest name, which was assigned in 1777 by a Dutch botanist.  Furthermore, its other English names include the following donkey rhubarb, elephant ears, fleeceflower, Hancock’s curse, Himalayan fleece vine, and pea shooters.

There are different applications for Japanese knotweed.  Beekeepers give importance to the plant as it is a significant supplier of nectar for honeybees at some stage in the year when there is little flowering.  It produces monofloral honey, which is also known as bamboo honey.  Also, the plant’s new stems are fit to be eaten, which taste like mild rhubarb.  It is a good source of vitamin C, vitamin A, manganese, phosphorus, potassium, and zinc.

Another known application of the plant is that it is a source of resveratol, the same substance seen in the skin of grapes and red wine.  The compound allows to lessen bad cholesterol, thus cutting down the possibility of heart attacks.  One more useful substance taken from this plant is emodin, which helps regulate bowel movement.  Likewise, the plant is in particular valuable because of its ability to stay alive at whatever time of the year and in harsh situation.

However, as much as Japanese knotweed has many applications, it is regarded as an invasive plant particularly in Europe and in North America.  During the 19th century, the plant was brought to Europe and the United States, and it was used to give food to animals, as an decorative plant, and to prevent soil erosion.  The plant has been discovered to be a burden, nevertheless.

It is deemed as one of the world’s 100 worst invasive species.  It is considered as a grave threat to builders, land developers, and gardeners.  Moreover, the problems it may cause include mutilation to roads, pavements, drains, walls, and even buildings.  It may likewise occupy river banks, therefore preventing entry to rivers.  One more Japanese knotweed problem is that it grows quickly and easily.  It can expand from small parts of root cuttings, and it can develop to three to four inches a day.  Because of the damage that this species of plant can bring, the UK for example has come up with the Wildlife and Countryside Act 1981.  The Act forbids its growth in the wild.

The Japanese knotweed, definitely, has two qualities. It is an advantage and a problem all at once. And, it cannot be instantly ignored as a useful or a harmful weed all together.

Posted by gardening - August 29, 2009 at 9:14 pm

Categories: Gardening   Tags: , , , , , ,