Native to Japan, Korea and parts of East Asia and China, the plant species Japanese Knotweed (fallopia Japonica) was brought to the United Kingdom by the German born botanist, Philipp von Siebold in the year 1850, on the wave of popularity surging through Victorian Britain to collect and study plants from all across the world. Japanese knotweed flowers and foliage were used for animal fodder and, at first and were prized for their beauty, so much so, that in 1847, the plant was named as ‘the most interesting new ornamental plant of the year by the Society of Agriculture and Horticulture in Utrecht.

Inevitably, the interest in the invasive plant quickly evolved into, “How on earth can we get rid of the stuff?” because it proved to be a ferocious and destructive plant. The presence of Japanese Knotweed in its natural habitat is on the side of volcanoes and the extreme climate and deposits of volcanic ash, native insects and fungi limited the spread of the plant, but in Britain there are no such natural regulators or predators.

So, Japanese Knotweed spreads like wildfire when it’s growing, but it also spreads when anyone tries to get rid of it, unless professionally managed by Japanese Knotweed Specialist companies such as ours. 

The species quick growth rate allows it to outcompete much of the native vegetation in the UK and Ireland.

Other negative impacts include:

  • Loss of biodiversity.
  • Aesthetic damage to gardens and landscaping.
  • Increased flooding risk by impeding river-water flow.
  • Increased riverbank erosion.
  • Loss of amenity and recreational space.
  • Delays to development.
  • Economic loss, primarily associated with control costs in the construction sector.
  • Adverse publicity for landowners.

Japanese Knotweed eradication

Getting rid of Knotweed is difficult because the tiniest fragment of stem or rhizome will easily take root and regrow into another voracious plant and it spreads rapidly so removing Japanese Knotweed a real problem. Contact us to hear how we deal with Japanese Knotweed.