Japanese Knotweed

Lord Tebbit Excerpts

Thursday 16th May 2019 Lords Chamber

[Lord Gardiner of Kimble]

My Lords, trials often take longer than we wish, but I assure the noble Lord that we are collaborating with Canada, because it has a similar problem, and with experts across Europe and the United States. I agree: it is frustrating that the psyllid has not established as we wished. We are working on another form of control, which is also under evaluation: a mycoherbicide. This is all part of using the science. I agree with the noble Lord that it is very invasive. That is why I will read some of the advice in the Science and Technology Committee report that came out this morning. We need to attend to this. The problem with the noble Lord’s first point is that, if someone fly-tips spoil with elements of Japanese knotweed, will the landowner really be required to remove that fly-tip? That is the problem if you make it a legal liability on the landowner to remove it.

[Lord Tebbit (Con)]

My Lords, could my noble friend have a word or two with the highways agency? It has recently been spraying all over the place to kill insects. The effects of that are rather dubious, apart from keeping our car windscreens rather cleaner. But there is knotweed, and other noxious weeds which are surely covered by the Weeds Act, all the way along the sides of our motorways. Why not get it to do something?

[Lord Gardiner of Kimble]

We are strongly of the view that we need to look after our pollinators and insects, so we should not cut verges unless it is necessary for safety. This is certainly an issue I will take up with my Department for Transport colleagues, but I know that both Highways England and Network Rail are conscious of their responsibilities. Indeed, there have been cases in which Network Rail has been required to attend to Japanese knotweed. This is a real problem, and I encourage landowners to attend to it.