Japanese knotweed

Japanese knotweed (uncountable)

1. A large, herbaceous perennial plant, Fallopia japonica, native to Asia; it is a highly invasive colonizer outside of its native territory.
   • 2022 June 29, Paul Clifton, “Using AI technology to manage lineside vegetation”, in RAIL, number 960, page 32:

     "We got into this because we were looking at invasive species at the roadside, such as Japanese knotweed. A lot of rail embankments have been solidified by knotweed because the roots are so strong.

• Japanese knotweed psyllid — Aphalara itadori

• Mycosphaerella - leafspot fungus
• Puccinia polygoni-weyrichii
• Gallerucida nigromaculata

• Japanese knotweed on Wikipedia.Wikipedia
• Fallopia japonica on Wikispecies.Wikispecies
• Fallopia japonica on Wikimedia Commons.Wikimedia Commons
• Japanese knotweed at USDA Plants database
• Fallopia japonica at Invasive plants.net.