Further about the Japanese Knotweed

Because of the enormous vitality and the ability of this plant across to grow (dry and wet soil, nutrient-rich and nutrient poor, sand, clay and peat) and in all those situations the other herbs and shrubs to crowd the plants internationally to 100 Worst exotics included. It can grow through cracks in the foundation and asphalt grow houses within outgrow. There are no insects or fungi that are significant for food (nectar at most), so the plant cannot be interrupted in its march. The absence of insect life is an undergrowth that is dominated by Japanese knotweed for birds totally uninteresting. A Fallopia vegetation is ecologically poorer than a corn field.

In several countries, legislation to prevent the spread of this plant, including the United Kingdom. At construction sites, the first plant to be contested, the free Fallopia of the site for the Olympic Games has tons of cost. In Washington state, this plant closely contested (in nature with glyphosate) to the valuable habitat of streams and stream banks not to lose this plant.

By EPPO (European and Mediterranean Plant Protection Organization, whose member almost all countries from Europe and around the Mediterranean) is strongly recommended for countries affected by this plant threatened to take measures to prevent further introduction and spread and unwanted populations manage, through publicity, restrictions on sale and planting and eradication.

The Japanese knotweed by its vigor and relative immunity to pesticides are difficult to kill in places where he once well established (= more than 50 stems). Control is based on (a combination of) three tactics and is a multi-annual (minimum three years):

Mowing and removal: best around flowering period (August to September) or several times a year. Caution: the cuttings should not be mixed with ordinary green waste, since each piece again to continue through a new colony!

By frequently mowing was once every four weeks mowing initially very effective: the plant will be cut if there is a lot of energy in new shoots was stopped, but the sprouts do not have roots back to the energy can provide. To complete the plant will eventually lose every 14 days to be mowed.

Cover: best in the beginning of winter by covering it with a flexible, non-translucent material. Beware: the edges of the old stems are razor sharp and pierce easily through most materials before! Rigid materials (eg concrete slabs) must be absolutely smooth, because the minimum is enough to crack the plate to burst. Up to 7 meters of the cover, new shoots arise control remains necessary.

Chemical: glyphosate-based products may contribute to the fight. These products cause only a weakening of the plant and not kill. Application is by spray, cover with fresh pruning wounds or injection (recently cut) stem. Especially fighting between mid August and early October is very effective. The plant gets food reserve in the fall from the leaves back to the roots and take the glyphosate along.

Excavation is inefficient and labor intensive. The roots can be up to 3 meters deep and if you forget a piece of 1 cm, the plant (although much smaller) back.

In England in 2010 decided to release the Aphalara itadori (a bladvlo) as biological control of Japanese duizenknoop. The plant is eaten by goats.

The stems are used in floral art and the young shoots can be eaten (tastes like rhubarb, a vegetable from the same plant family). The plant is also known as nectar plants.


Names in other languages:

• German: Japanischer Staudenknöterich

• English: Japanese Knot Weed

• French: Renouee bambou

• Czech: Křídlatka japonská

• Danish: Japan-Pileurt

• German: Japanischer Staudenknöterich

• Finnish: Japanintatar

• French: Renouee du Japon

• Hungarian: arteri japánkeserűfű

• Polish: Rdestowiec ostrokończysty

• Swedish: Park Slide




Source: http://nl.wikipedia.org/wiki/Japanse_duizendknoop


See also: Sending Flowers, Online Florist