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Topic: Japanese knotweed

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	PCA Alien Plant Working Group - Japanese Knotweed (Polygonum cuspidatum)
		Stems of Japanese knotweed are smooth, stout and swollen at joints where the leaf meets the stem.
		Japanese knotweed is designated a noxious weed in the State of Washington.
		Current distribution of Japanese knotweed includes 36 states in the lower 48 from Maine to Wisconsin south to Louisiana, and scattered midwest and western states.
	www.nps.gov /plants/alien/fact/pocu1.htm (837 words)

	Japanese Knotweed \| Minnesota NRCS (Site not responding. Last check: )
		Japanese knotweed, also known commonly as ‘bamboo’, is a native of Japan that was brought to the US from Britain in the late 1800’s as an ornamental.
		Japanese knotweed is a shrub-like, herbaceous perennial (but dies back to ground each fall) that can grow to ten feet in height and form dense thickets of erect stems that exclude native vegetation and greatly alter natural ecosystems.
		Japanese knotweed’s stout, hollow, bamboo-like stems and the large (3 to 6 inches long), broadly ovate, alternate leaves are distinctive.
	www.mn.nrcs.usda.gov /news/features07/Japanese_knotweed.html (294 words)

	Japanese knotweed - Wikipedia, the free encyclopedia
		Japanese knotweed was first introduced to Europe and North America in the late 19th century for ornamental use, for planting to prevent soil erosion, and sometimes as a forage crop for grazing animals.
		Japanese knotweed yields a nice monofloral honey, usually called "bamboo" honey by northeastern U.S. beekeepers, that is like a mild-flavored version of buckwheat honey (a related plant also in the Polygonaceae).
		Japanese knotweed is a concentrated source of emodin, used as a nutritional supplement to regulate bowel motility.
	en.wikipedia.org /wiki/Japanese_knotweed (638 words)

	Japanese Knotwood (Polygonum cuspidatum) - J Doll and J Doll
		Japanese knotweed is native to Japan, China, and parts of Korea and Taiwan.
		Japanese knotweed is easily identified by the tall, reddish, hollow stems, the ochrea on the stems at the base of the petioles, the heart-shaped leaves and the aggressively spreading rhizomes that result in large areas infested with only this species.
		Japanese knotweed is not seen as an undesirable weed by all.
	ipcm.wisc.edu /uw_weeds/extension/articles/japknotweed.htm (1989 words)

	Japanese Knotweed (Polygonum cuspidatum) - A Noxious Weed in Washington
		Japanese knotweed is a very aggressive species (Hitchcock and Cronquist 1964) that is capable of crowding out all other vegetation (Ahrens 1975); Hickman (1993) lists the species as a noxious weed.
		Japanese knotweed is an escaped ornamental that is becoming increasingly common along stream corridors and rights-of-way in Washington.
		Japanese knotweed was subsequently introduced to the U.S. for use in ornamental hedges and for erosion control (Pridham and Bing 1975).
	www.ecy.wa.gov /programs/wq/plants/weeds/aqua015.html (467 words)

	Action Log - Japanese Knotweed Eradication
		Japanese knotweed was introduced to the United Kingdom as an ornamental in 1825, and from there to North America in the 19th Century.
		Japanese knotweed is also known as Japanese or Mexican bamboo, because the stem becomes woody and has enlarged nodes similar to those of a bamboo fishing pole.
		Most of the growing knotweed grew at the periphery where the plastic had be pushed back by rainfll and stormwater in the creek, but amazingly some knotweed survived under the plastic where small holes passed light.
	www.fosc.org /AL-Knotweed.htm (837 words)

	Cherwell District Council - Japanese Knotweed
		Japanese Knotweed was introduced to the UK as an ornamental plant during the 1800s.
		Any Japanese Knotweed polluted soil or plant material that you discard, intend to discard or are required to discard is classed as 'controlled waste' and should be accompanied by appropriate Waste Transfer documentation.
		The Cornwall Knotweed Forum was formed in 1997 to co-ordinate policy on the control of Japanese Knotweed in Cornwall, where they have had a particular problem with Knotweed.
	www.cherwell-dc.gov.uk /leisure/knotweed.cfm (554 words)

	Invasive Plants of Ohio - Factsheet 10 - Japanese Knotweed
		Japanese knotweed is a non-native, semi-woody perennial that grows in large clumps reaching heights of 3-10 feet.
		Japanese knotweed was introduced from Asia as an ornamental in the late 19th century because of its unusual bamboo-like growth habit.
		Japanese knotweed grows quickly and aggressively by extensive rhizomes and forms dense thickets that exclude native vegetation and reduce wildlife habitat.
	www.dnr.state.oh.us /dnap/invasive/10japknotweed.htm (542 words)

	Technical bulletin for Japanese Knotweed - Polygonum cuspidatum
		Japanese knotweed is a member of the Polygonaceae, or buckwheat family, and is native to eastern Asia.
		In Washington State, Japanese knotweed is a Class C noxious weed, with widespread and increasing distribution in riparian areas, moist waste places, roadsides and rights of way, particularly west of the Cascade Range.
		The reddish, bamboo-like canes of Japanese knotweed are smooth and hollow stems, jointed and swollen at the nodes - a characteristic of the buckwheat family.
	www.nwcb.wa.gov /weed_info/jknotweed2.html (742 words)

	Japanese Knotweed, REC Ltd
		Japanese Knotweed (Fallopia Japonica, Renoutria Japonica or Polygonum Cuspidatum) was first introduced into the United Kingdom in 1825, when it was purposely planted in Kew Gardens.
		Under The Wildlife and Countryside Act 1981 Japanese Knotweed is now a controlled species and, as such, soil contaminated with it’s rhizomes must be disposed of appropriately and it is an offence to allow it to spread to other land.
		Japanese Knotweed was identified at a client’s site where previous site activities, including levelling had caused the spread of the rhizomes across the site.
	www.recltd.co.uk /japanese-knotweed.htm (676 words)

	Japanese Knotweed
		Japanese Knotweed was originally introduced from Asia as an ornamental and is still sometimes used in gardens.
		Japanese knotweed is a herbaceous, semi-woody perennial member of the Buckwheat Family.
		Japanese Knotweed prefers open habitats and does poorly in the under-story of forested areas.
	www.agf.gov.bc.ca /cropprot/jknotweed.htm (343 words)

	DRWA Knotweed Control
		Japanese knotweed (Polygonum cuspidatum) is an herbaceous, perennial plant that was originally from Asia.
		Japanese knotweed is an extremely difficult plant to eradicate because of its ability to spread by its roots or rhizomes, which can grow to a depth of more than six feet.
		Knotweed is spread throughout watersheds when pieces of the roots and stems are transported in piles of dirt or fill, or are swept downstream during high water events.
	www.deerfieldriver.org /KnotweedControl.htm (2035 words)

	BBC - h2g2 - Japanese Knotweed
		Japanese knotweed (Fallopia japonica, or Polygonum cuspidatum) is regarded by many people as one of the most invasive and undesirable plants in the western hemisphere.
		Japanese knotweed is common alongside roads and rivers throughout the UK and Ireland, where it forms dense thickets.
		Japanese knotweed is already a significant threat to gardens, buildings, roads and agricultural land throughout the western world, but the worst may be yet to come.
	www.bbc.co.uk /dna/h2g2/A1161208 (1111 words)

	Polygonum - Wikipedia, the free encyclopedia
		Japanese Knotweed (Fallopia japonica, Polygonum cuspidatum) is a primary commercial source of Resveratrol supplements, marketed under a variety of names: Hu Zhang, Ko-jo-kon, He Shou Wu, Giant Knotweed, Fo-Ti and Polygonum.
		Polygonum cuspidatum > Fallopia japonica - Japanese knotweed
		Polygonum japonicum (Fallopia japonica, Reynoutria japonica) – Japanese knotweed
	en.wikipedia.org /wiki/Knotweed (443 words)

	Common Name: Japanese Knotweed
		Japanese Knotweed is a perennial herb that grows in well lit locations adjacent to riparian areas and can reach heights of 1 to 3 meters (1).
		Japanese Knotweed was introduced to the United Kingdom in 1825 and from there, was spread to North America in the late 19th century (5).
		In its native habitat, Japanese Knotweed is naturally predated by insects that have evolved to be able to feed on the herb (4).
	web.uvic.ca /enweb/courses/318/Assignment3/KWebster.htm (1721 words)

	Japanese Knotweed
		Japanese Knotweed grows to heights of 9-12 feet, has bamboo type stems that stay erect throughout the winter with new shoots growing up amongst the old stems the following spring.
		Japanese Knotweed was introduced from Asia to Europe in the mid-19th century and to the United States in the early 20th century.
		Japanese Knotweed will require a number of herbicide treatments over several years before it is completely eradicated.
	www.gardening-advisor.com /japanese-knotweed.html (511 words)

	Japanese Knotweed, Mexican Bamboo (Polygonum cuspidatum)
		Japanese knotweed is an herbaceous perennial which forms dense clumps 1-3 meters (3-10 feet) high.
		Japanese knotweed can tolerate a variety of adverse conditions including full shade, high temperatures, high salinity, and drought.
		Repeated cutting may be effective in eliminating Japanese knotweed, but this strategy must be carried out for several years to obtain success.
	www.hort.uconn.edu /cipwg/art_pubs/GUIDE/x05japanese.html (488 words)

	The Nature Conservancy in North Carolina - Japanese Knotweed
		Japanese knotweed is on the worst pest list for the The Nature Conservancy's North Carolina mountain region.
		Stems of Japanese knotweed are smooth, stout and swollen at joints where the leaf meets the stem.
		Japanese knotweed spreads primarily through rhizomes and is often introduced as a contaminant in fill dirt.
	www.nature.org /wherewework/northamerica/states/northcarolina/initiatives/art12746.html (236 words)

	Japanese Knotweed Alliance
		Japanese knotweed, a rhizomatous perennial, was introduced from Asia to Europe in the mid-nineteenth century as an ornamental and fodder plant.
		The young shoots of Japanese knotweed are palatable to sheep, goats, cattle and horses and grazing may be used in suitable situations to keep the plant under control.
		Japanese knotweed is a plant that has been introduced to a new environment without its natural enemies.
	www.cabi-bioscience.org /html/japanese_knotweed_alliance.htm (3930 words)

	Doncaster Metropolitan Borough Council \| Japanese Knotweed
		Japanese Knotweed (Fallopia japonica) is a perennial plant brought into the UK as an ornamental garden plant in the 1800’s.
		Japanese Knotweed grows in the form of a bamboo like stem with green oval shaped leaves with a distinctive zig zag pattern, in early spring shoots will grow from the stem which will be red or purple in colour.
		Japanese Knotweed is spread easily by rhizomes (parts of the root) and a piece as small as 0.8grams is all that is needed to allow the plant to spread.
	www.doncaster.gov.uk /Living_in_Doncaster/Environment/Recycling/Japanese_Knotweed.asp (880 words)

	Japanese Knotweed - Biological Control of Invasive Plants in the Eastern United States (Site not responding. Last check: )
		Japanese knotweed spreads quickly to form dense thickets that exclude native species and are of little value to wildlife, leading to it being described as an environmental weed (Holzner, 1982).
		Japanese knotweed was independently classified as Reynoutria japonica by Houttuyn in 1777 and as P.
		Regeneration of Japanese knotweed (Fallopia japonica) from rhizome and
	www.invasive.org /eastern/biocontrol/12Knotweed.html (3660 words)

	Japanese Knotweed - Reynoutria japonica, species information page
		Knotweed reproduces primarily through it's root system, which may reach 18 meters (60 feet) in length, and quite capable of growing through tarmac, concrete and paving, doing extensive damage as it spreads.
		Japanese knotweed is listed as a wild edible plant, and young shoots up to 30cm (1 ft), can be cut early in the spring, steamed or boiled and served like asparagus.
		The Japanese Knotweed Control Forum for Cornwall - This Group is supporting a countywide survey of Japanese Knotweed distribution by the Botanical Society of the British Isles.
	www.brickfieldspark.org /data/japaneseknotweed.htm (782 words)

	The Nature Conservancy in Connecticut - Invasive Plant Fact Sheet/Japanese Knotweed
		Description: Japanese knotweed is a fast-growing herbaceous perennial that grows in large clumps three to six feet in height.
		Distribution: Native to Japan, Japanese knotweed was introduced into the United States in the late 1800s as an ornamental.
		Japanese knotweed is also known by the common names Mexican bamboo and Japanese fleece flower.
	www.nature.org /wherewework/northamerica/states/connecticut/science/art323.html (636 words)

	Environment Agency - Japanese Knotweed Information
		Japanese Knotweed was introduced to the UK as an ornamental plant during the 1800s.
		Although Japanese Knotweed is not toxic to humans, animals or other plants, it offers a poor habitat for native insects, birds and mammals.
		Any Japanese Knotweed polluted soil or plant material that you discard, intend to discard or are required to discard is likely to be classed as 'controlled waste' and should be accompanied by appropriate Waste Transfer documentation.
	www.netregs.gov.uk /netregs/processes/367836/?lang=_e (1660 words)

	Japanese Knotweed (Site not responding. Last check: )
		Japanese Knotweed was introduced into Britain around 1825, and since then has become so widespread that it has become a serious weed problem.
		It is a perennial plant with an extensive system of underground rhizomes that is very invasive that may reach a depth of 2 metres and extend to 7 metres from the parent plant.
		The reporting of Knotweed locations and advice on its control can be made to Kirklees Metropolitan Council using the ROSS freefone service on 0800 731 8765 or Culture and Leisure Services on culture.and.leisure.services@kirklees.gov.uk.
	www.kirkleesmc.gov.uk /community/environment/japaneseknotweed.shtml (471 words)

	Dudley Metropolitan Borough Council - Japanese Knotweed
		Japanese Knotweed is now a serious threat to many natural habitats, especially watercourses and wetlands, because of its vigorous growth which smothers our less vigorous native flora.
		Japanese Knotweed was introduced into our gardens early in the 19th century.
		Japanese Knotweed is a herbaceous perennial - it dies back every year but emerges again from underground roots, or rhizomes, in late spring.
	www.dudley.gov.uk /environment--planning/countryside/green-care/japanese-knotweed (683 words)

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