Noun
See Knot/rass.
Source: Webster's dictionaryAccording to the U.K. government, the cost of controlling knotweed has hit $3 billion. Source: Internet
He also introduced Japanese knotweed ( Fallopia japonica ), which has become a highly invasive weed in Europe and North America. citation All derive from a single female plant collected by Siebold. Source: Internet
Bohemian knotweed, a mutant hybrid— which is a cross between Japanese and giant knotweed that produces huge quantities of viable seeds —now accounts for about 80 per cent of knotweed infestations in British Columbia. Source: Internet
Following earlier studies imported Japanese knotweed psyllid insects ( Aphalara itadori ), whose only food source is Japanese knotweed, were released at a number of sites in Britain in a study running from 1 April 2010 to 31 March 2014. Source: Internet
In some cases, it is possible to eradicate Japanese knotweed in one growing season using only herbicides. Source: Internet
It is an offence under section 14(2) of the Wildlife and Countryside Act 1981 to "plant or otherwise cause to grow in the wild" any plant listed in Schedule nine, Part II to the Act, which includes Japanese knotweed. Source: Internet