Re: Japanese Knotweed article last week.
Laboratories have come up with a biological solution to keep the Japanese knotweed from spreading and hopefully keep it under control. The weed up to yet has no natural enemies in this country so the plant can spread undisturbed. This is changing as bugs and fungi that grow on the plants in their native country are to be introduced. The beetle eggs are injected into the stems and when they hatch they dig their way out into the open, the result of the tunnelling snaps the stems. The fungus will hopefully kill off the vulnerable plant
The other method that has been used for a while now is to cut each stalk and painstakingly inject each stem with herbicide, this will still take between 3-5 years to kill the plant. Regards. B.T Derry