In 2015, California EPMT discovered Japanese knotweed along Lagunitas Creek. 2 years later, treatment cut knotweed by 93% on National Park Service land, a major g…

Japanese knotweed can spread quietly along waterways, making an early discovery especially valuable. In 2015, Californias ...
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Japanese knotweed is spreading more aggressively than ever thanks to warm weather, expert warns

Aggressive Japanese knotweed is thriving and spreading faster than usual this summer, experts have warned. The plant, which can grow up to 10cm (4 inches) per day, is reaching its peak season.
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Gardener's deep dig reveals the nightmare root that makes Japanese knotweed so hard to kill

A gardener on Reddit got an unsettling reminder of why Japanese knotweed has such a fearsome reputation: What shows above the soil may be only a small part of the problem. After digging deeper than ...
The Scranton Times-Tribune

Japanese knotweed: the notorious invasive taking root across Pennsylvania

Sprawling patches of Japanese knotweed are choking creekbanks and roadsides all over Northeastern Pennsylvania this summer, highlighting the persistence of the invasive species. What makes knotweed ...