A growth of Japanese knotweed in Ohio’s Cuyahoga Valley National Park.

Source: https://alaskapublic.org/2023/11/29/alaska-experts-try-to-untangle-invasive-japanese-knotweed/

Homeowners need to be particularly wary, as even the slightest presence of Japanese knotweed in the can deter potential future buyers - and even lead to banks refusing a mortgage application.

Source: https://www.mirror.co.uk/lifestyle/gardening/japanese-knotweed-how-rid-notoriously-31052972

Nic Seal, founder and managing director of Environet, said: “Japanese knotweed tends to strike fear into the hearts of homeowners.

Source: https://www.knutsfordguardian.co.uk/news/23527595.map-shows-warrington-hotspot-invasive-japanese-knotweed-plant/?ref=rss

Spraying or injecting the stems with chemicals can be an effective treatment to stop knotweeds spreading, however it usually takes at least three years to treat Japanese knotweed.

Source: https://www.derbyshiretimes.co.uk/news/people/japanese-knotweed-nine-chesterfield-high-risk-areas-according-to-latest-heatmap-how-to-stop-it-4165761

The data shows almost 58,000 instances of Japanese knotweed across the country, with hundreds in Stoke-on-Trent and North Staffordshire.

Source: https://www.stokesentinel.co.uk/news/stoke-on-trent-news/stoke-trent-north-staffordshires-japanese-8780679

While Japanese knotweed is a particularly pervasive specimen, environmentalists stressed that invasive species are all too common on the Island, and the average gardener or hiker may not fully understand their ecological threat.

Source: https://vineyardgazette.com/news/2023/10/05/island-ecologists-grapple-invasive-japanese-knotweed