Japanese Knotweed

Countess of Mar Excerpts

Monday 8th July 2013 Lords Chamber

[Lord De Mauley]

Yes, my Lords. It is called Aphalara itadori and my noble friend is entirely right. On top of research work that has already been done testing it against more than 90 plant species, we are going through a phased release over five years to make absolutely sure that it focuses entirely and exclusively on Japanese knotweed. That is a really important point.

[The Countess of Mar]

My Lords, Japanese knotweed is frequently found on publicly owned land, such as railway property and council land. In view of the fact that the Government seem to be totally unable to enforce regulations regarding ragwort, how can any rulings be given on Japanese knotweed?

[Lord De Mauley]

The noble Countess has a point but this Question is about the use of a biocontrol against it. She mentions Network Rail, which, as a matter of interest, is a member of the project consortium for the natural control of Japanese knotweed and is fully involved in discussions about how the trial proceeds. Along with Defra, it sponsored the Environment Agency knotweed code of practice, published in 2006. It has been a major funder of the research and was among the instigators of the project.