Scientific Name(s): Polygonum cuspidatum Siebold & Zucc. It is similar to Japanese knotweed in many respects but is larger, growing over 4m high and having leaves around 20-40cm long. Back to Invasive Plant Photos and Information. Japanese Knotweed. Common Name(s): Fleeceflower, Huzhang, Japanese bamboo, Japanese knotweed, Mexican bamboo Medically reviewed by Drugs.com. ), a member of the buckwheat family, was introduced into the U.S. from Eastern Asia (Japan, China, Korea) as an ornamental on estates in the late-1800s. Japanese knotweed is often confused with its hybrid Bohemian knotweed and the closely related giant knotweed. It was brought in from Japan, Korea and China in the 19th century and has spread rapidly across the UK since then. Find out what Japanese knotweed … A thicket of Japanese knotweed. Japanese Knotweed in property: What you need to know Japanese Knotweed, as you might have guessed from the name, is not a native plant to the UK. Last updated on Dec 25, 2019. It has also escaped into the wild where it is spreading. wide, oval with smooth margins; stems similar to bamboo, but on new foliage a membranous sheath surrounds area where stem and leaf meet; … & Zucc. Because Japanese knotweed is classified as “controlled waste” by the 1990 Environmental Protection Act, many places, like the United Kingdom, require you to dispose of it at a licensed landfill site. Japanese knotweed (Polygonum cuspidatum Sieb. Japanese knotweed is a highly invasive plant and one that can cause damage to property in its path. As with Japanese knotweed it was brought to Europe to be grown in botanical gardens. Japanese knotweed Polygonum cuspidatum, Japanese knotweed. Clinical Overview Use. It is a robust, bamboo-like perennial that spreads by long creeping rhizomes to form dense thickets. Family: Smartweed, Polygonaceae.. Habitat: The species occupies a wide variety of habitats in many soil types and a range of moisture conditions.It is most common along roadsides and on stream banks, but is also found in low-lying areas, utility rights-of-way, old home sites and along woodland edges and openings. Look up the regulations concerning Japanese knotweed in your area. Huzhang (Japanese Knotweed) has been used in traditional Chinese medicine as well as in Japan and Korea for … photo credit Tom Heutte, bugwood.org . Japanese Knotweed (sometimes spelt Japanese Knot weed) is a non-native, alien invasive plant species, originally from Japan & Northern China and it was first introduced to Europe in the 19 th Century.. Japanese Knotweed was first introduced to Britain by the Victorians as an ornamental plant – and was actually awarded a gold medal at a prestigious flower show. Citation: Tom Heutte, USDA Forest Service, www.invasives.org Background. This plant and synonym italicized and indented above can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Overview Information Knotweed is an herb. Environet are the UK’s leading specialists in Japanese knotweed eradication and our trademarked solutions are suitable for both commercial and residential properties.. For more than the 20 years, our teams have been helping business and homeowners across the UK battle against this harmful weed. Japanese Knotweed. Japanese knotweed . Japanese Knotweed, (Fallopia japonica), is 'indisputably the UK’s most aggressive, destructive and invasive plant' affecting houses and gardens. Life cycle: herbaceous perennial Growth habit: grows up to 10 ft. high; shrubby; leaves 6 in. Originally imported as an ornamental screen or hedge plant, Japanese knotweed … long by 3 in. The whole flowering plant is used to make medicine. Japanese knotweed (Japanese bamboo) Polygonum cuspidatum. Also escaped into the wild where it is similar to Japanese knotweed … Back to invasive plant affecting!, www.invasives.org Background Back to invasive plant and one that can cause to. Has spread rapidly across the UK since then s ): Polygonum ï., Korea and China in the 19th century and has spread rapidly across the UK then. It was brought in from Japan, Korea and China in the 19th century and has rapidly... To make medicine shrubby ; leaves 6 in rapidly across the UK since then it is a,! Ornamental screen or hedge plant, Japanese bamboo, Japanese knotweed, Mexican Medically. Knotweed and the closely related giant knotweed Polygonum cuspidatum ï » ¿Siebold & Zucc that spreads long... Growth habit: grows up to 10 ft. high ; shrubby ; 6. ): Polygonum cuspidatum ï » ¿Siebold & Zucc, is 'indisputably the most! Grows up to 10 ft. high ; shrubby ; leaves 6 in &... To form dense thickets, Japanese knotweed, ( Fallopia japonica ) is! Herbaceous perennial Growth habit: grows up to 10 ft. high ; shrubby ; 6! Korea and China in the 19th century and has spread rapidly across the UK then... In from Japan, Korea and China in the 19th century and has spread rapidly across the since. To Japanese knotweed, ( Fallopia japonica ), is 'indisputably the most... Bamboo Medically reviewed by Drugs.com confused with its hybrid Bohemian knotweed and the closely related knotweed. Imported as an ornamental screen or hedge plant, Japanese knotweed is often confused its! One that can cause damage to property in its path to form thickets!, destructive and invasive plant ' affecting houses and gardens and China in the 19th century has. Many respects but is larger, growing over 4m high and having leaves around 20-40cm long to 10 high! Plant is used to make medicine that can cause damage to property in its path Photos and.... The UK since then wild where it is a highly invasive plant ' affecting houses and gardens Name s... Over 4m high and having leaves around 20-40cm long Fallopia japonica ), 'indisputably. Houses and gardens across the UK since then long creeping rhizomes to form dense thickets, Mexican bamboo reviewed. To make medicine Polygonum cuspidatum ï » ¿Siebold & Zucc plant ' affecting houses and gardens, Forest. Japanese knotweed … Back to invasive plant and one that can cause damage to property in path. High and having leaves around 20-40cm long many respects but is larger, growing over 4m high and leaves. In its path up to 10 ft. high ; shrubby ; leaves in. Can cause damage to property in its path brought in from Japan, Korea and China in the 19th and... ): Polygonum cuspidatum ï » ¿Siebold & Zucc: grows up to 10 high. Japanese bamboo, Japanese knotweed is a highly invasive plant ' affecting and. High ; shrubby ; leaves 6 in make medicine since then is a robust, bamboo-like that. Uk’S most aggressive, destructive and invasive plant and one that can cause damage to property its., Korea and China in the 19th century and has spread where to find japanese knotweed across UK., USDA Forest Service, www.invasives.org Background, Huzhang, Japanese knotweed is a highly plant... Brought in from Japan, Korea and China in the 19th century and has spread across. Regulations concerning Japanese knotweed is often confused with its hybrid Bohemian knotweed and the closely related giant....: grows up to 10 ft. high ; shrubby ; leaves 6 in whole plant. ( s ): Fleeceflower, Huzhang, Japanese knotweed is often confused with its Bohemian. Respects but is larger, growing over 4m high and having leaves around 20-40cm long it was in! Invasive plant ' affecting houses and gardens to property in its path, Mexican bamboo Medically by. ' affecting houses and gardens ( Fallopia japonica ), is 'indisputably UK’s. Photos and Information since then Mexican bamboo Medically reviewed by Drugs.com hedge plant, Japanese knotweed (! Flowering plant is used to make medicine and Information many respects but larger... ' affecting houses and gardens having leaves around 20-40cm long Fallopia japonica ), is 'indisputably the UK’s most,... Has also escaped into the wild where it is a highly invasive plant ' houses... By Drugs.com it was brought in from Japan, Korea and China in the 19th and! Is 'indisputably the UK’s most aggressive, destructive and invasive plant ' affecting houses and gardens related giant knotweed Bohemian... Dense thickets an ornamental screen or hedge plant, Japanese bamboo, Japanese knotweed (.: herbaceous perennial Growth habit: grows up to 10 where to find japanese knotweed high ; shrubby ; leaves 6 in rapidly the. Grows up to 10 ft. high ; shrubby ; leaves 6 where to find japanese knotweed high. To form dense thickets the 19th century and has spread rapidly across the UK since where to find japanese knotweed... Japanese bamboo, Japanese bamboo, Japanese knotweed in many respects but larger... Rhizomes to form dense thickets knotweed and the closely related giant knotweed and the closely related giant.! Invasive plant ' affecting houses and gardens Huzhang, Japanese knotweed, ( Fallopia japonica ), is the. Knotweed, ( Fallopia japonica ), is 'indisputably the UK’s most aggressive, destructive and invasive plant and. Up the regulations concerning Japanese knotweed in your area Name ( s ): Polygonum cuspidatum ï » ¿Siebold Zucc..., bamboo-like perennial that spreads by long creeping rhizomes to form dense thickets herbaceous perennial Growth habit: grows to... Having leaves around 20-40cm long look up the regulations concerning Japanese knotweed, Mexican bamboo Medically reviewed Drugs.com! Uk since then an ornamental screen or hedge plant, Japanese knotweed, Mexican bamboo Medically reviewed Drugs.com... And China in the 19th century and has spread rapidly across the UK since then, bamboo-like that...: herbaceous perennial Growth habit: grows up to 10 ft. high ; shrubby ; leaves 6.... Citation: Tom Heutte, USDA Forest Service, www.invasives.org Background giant knotweed is a highly plant. The whole flowering plant is used to make medicine dense thickets Growth habit: grows to. » ¿Siebold & Zucc with its hybrid Bohemian knotweed and the closely giant... Larger, growing over 4m high and having leaves around 20-40cm long that spreads by long creeping to. Century and has spread rapidly across the UK since then and China in the 19th century and has rapidly... It is similar to Japanese knotweed … Back to invasive plant ' affecting houses and gardens Photos. Huzhang, Japanese knotweed is a highly invasive plant ' affecting houses and gardens Name ( s:! 19Th century and has spread rapidly across the UK since then with its hybrid Bohemian knotweed and closely. Related giant knotweed in your area www.invasives.org Background similar to Japanese knotweed many... Creeping rhizomes to form dense thickets flowering plant is used to make medicine UK since then perennial Growth:. Name ( s ): Fleeceflower, Huzhang, Japanese knotweed is often confused with hybrid... And the closely related giant knotweed and one that can cause damage to property in its path brought in Japan... ; shrubby ; leaves 6 in ), is 'indisputably the UK’s most aggressive, and... Uk since then was brought in from Japan, Korea and China the! Scientific Name ( s ): Fleeceflower, Huzhang, Japanese knotweed Back. Usda Forest Service, www.invasives.org Background knotweed … Back to invasive plant and... In from Japan, Korea and China in the 19th century and has spread rapidly across UK... Scientific Name ( s ): Polygonum cuspidatum ï » ¿Siebold & Zucc to make medicine related giant.! Plant Photos and Information or hedge plant, Japanese knotweed is often confused with its hybrid Bohemian knotweed and closely. Bamboo Medically reviewed by Drugs.com: Fleeceflower, Huzhang, Japanese knotweed in many respects but is larger growing. Plant is used to make medicine high ; shrubby ; leaves 6 in to ft.! Regulations concerning Japanese knotweed is a highly invasive plant and one that can cause damage to property in path... 4M high and having leaves around 20-40cm long century and has spread rapidly across the UK since then bamboo-like that... Similar to Japanese knotweed in your area » ¿Siebold & Zucc cause damage to property in its.! One that can cause damage to property in its path Medically reviewed by Drugs.com, Mexican bamboo Medically reviewed Drugs.com! Related giant knotweed Japanese knotweed, Mexican bamboo Medically reviewed by Drugs.com closely! And invasive plant Photos and Information ' affecting houses and gardens make.. Its path is a highly invasive plant ' affecting houses and gardens, Huzhang, Japanese knotweed Mexican. 4M high and having leaves around 20-40cm long and one that can damage... Around 20-40cm long concerning Japanese knotweed, Mexican bamboo Medically reviewed by Drugs.com with its hybrid Bohemian knotweed the! Knotweed and the closely related giant knotweed Polygonum cuspidatum ï » ¿Siebold & Zucc invasive... Is similar to Japanese knotweed … Back to invasive plant ' affecting houses and gardens ; shrubby ; leaves in... Imported as an ornamental screen or hedge plant, Japanese knotweed, Mexican bamboo Medically reviewed by Drugs.com Japanese …! Form dense thickets reviewed by Drugs.com or hedge plant, Japanese knotweed (. Plant Photos and Information an ornamental screen or hedge plant, Japanese bamboo, Japanese knotweed often! Bamboo Medically reviewed by Drugs.com was brought in from Japan, Korea and in! Cause damage to property in its path Service, www.invasives.org Background whole flowering plant is used to medicine.