Invasion by the way is not the prerogative of humans! Mother Nature too has its own ways of invading the self-proclaimed Emperor of all species! Japanese Knotweed is among many ways of this silent or sometime noisy invasion. These intrusive species “blossom” from late summer to early autumn. It has 8 centimeter to 12 centimeter long clusters of small green-white flowers. As they say, if you love the rose, be prepared for the stems as well! But, here, a stem has obviously a stem. But wait! You are obviously wondering why this weed is called invasive right from the beginning! The wondering deserves explanation for sure! Japanese Knotweed grows in any place occupied or used by humans. It loves to grow in building crevices, landscapes, gardens, golf courses, road sides, moist areas etc. This obviously shatters human dreams or plans of any structural development. And, this is precisely the reason why it is deemed as invasive. It comes without notice, grows and invades! Due to this invasive nature of Japanese Knotweed, the government of Britain has listed it in Wildlife and Countryside Act of 1981 under which whoever grows this plant intentionally or causes it to grow is tantamount to commit an offense. Apart from this, if you are planning property development and facing the enormous growth of Japanese Knotweed at the site, it is advised to take the help of ecological consultants.
To remove this weed on your own is difficult because its roots are so powerful that they have the capacity to grow till seven years after the removal of the species! These roots are called rhizome and they are the main driving force in the growth of Japanese Knotweed. Usually, professional ecological consultants have in-depth knowledge of eradication of the invasive weeds. They have site specific and pragmatic approach to eradicate such invasive species like Japanese Knotweed.