Japanese knotweed new shoots

Japanese knotweed springs into action - red shoots spotted across the UK

It is that time of year again; new Japanese knotweed shoots have been spotted across the UK.

It is no co-incidence that Japanese knotweed has been described as indisputably the UK's most aggressive and destructive invasive plant (Environment Agency). The annual spend in the UK on control and eradication is £165m, with in excess of 500,000 homes being affected.  

Do you know what to look for?

Japanese knotweed and construction sites – herbicide treatment or physical removal?

It’s a question we’re often asked, and there is a very clear answer. 

If your planned works are likely to result in ground disturbance do NOT rely on herbicide alone. The entire rhizome system should be removed, because the chances are that not all of the rhizome system will be killed by herbicide, the consequence being that your groundworks will spread the knotweed around the site, and possibly off-site too.

Japanese knotweed growing in multiple gardens

House prices affected by Japanese knotweed

“House value halved due to presence of Japanese knotweed”.

There are many stories in the press, with similar headlines, that state Japanese knotweed is causing house values to be slashed by as much as a half.  Most recently, a property in Woolston Park in Cheshire claimed a potential £30,000 loss due to the presence of knotweed.