Posted: 23/04/2013 at 10:25
I have been keeping a patch of soil totally empty for the last 4 years trying to eradicate this pernicious thug from that section of the border. It has been dug over to a depth of at least 2 feet, the soli riddled and then left empty. This morning I find 3 new leaves appeareing. Every leaf that has ever shown its head has been sprayed with Roundup and it still grows.
I have given up even trying to rid the Roadside border of it and we are considering removing every plant and shrub from this 60 metres by 4 metres bed and returning it to grass Not that, that would work, I find it even comes up in the mown areas now. despite applications of Lawn Weedkiller.
As far as I am concerfned it should be banned from sale like Knotweed.