and red asparagus-like shoots,' says Christopher O'Donoghue, one of the co-directors at Gardens Revived. 'Japanese knotweed stems look a lot like bamboo canes,' he explains, pointing out that they ...

Native to Asia, knotweeds were introduced to North America as an ornamental plant. They can spread into natural areas growing quickly and forming dense monocultures, reducing habitat diversity, ...

Giant knotweed, a terrestrial herbaceous plant in the Polygonaceae family, invades along waterways, roads, forest openings, and disturbed sites where dumped. Key characteristics of this invasive ...