There are few garden discoveries more disappointing than realizing that the beautiful plant in your yard is actually Japanese knotweed (Polygonum cuspidatum), an invasive plant that is a problem in ...

“We’ve been trying to control it rather than eradicate it,” he said with a sigh. “We’ll never be able to eradicate it.” Knotweed spreads easily, through a wildly aggressive root system. An invasive, ...

Bristol is the Japanese knotweed 'capital of England', new data from Environet shows. In the year to date, there have been 1,440 reported sightings of Japanese knotweed in the South West city, ...

St. Louis County is using a $15,000 state grant to help get rid of noxious weeds like invasive knotweed and wild parsnip. The invasive knotweed can be a big problem for homeowners, because it can do ...