Non-herbicide treatment for Japanese knotweed Last updated: 03/08/2017 Subscribe. 2004 Noncrop and Turfgrass Weed Science Research. T 020 3463 2349 E london@knotweed.co.uk. Many herbicides exist that are effective in the treatment of Japanese knotweed, such as picloram and triclopyr, however, these act a little different to that of glyphosate, which contains several properties that make it a more viable option for homeowners. A Japanese Knotweed herbicide treatment program will generally take anywhere from 1-4 growing seasons to be 100% effective. Plants reach up to 10’ and the dead stalks remain standing through the winter. Weed. Management of Japanese knotweed Herbicide Application. But be careful, since these are non-selective herbicides and as such, will kill whatever plants they come into contact with, whether that’s Japanese Knotweed or your prize geraniums. Japanese Knotweed herbicide treatments. West. This perennial herb grows up to 10 feet tall, with heart-shaped leaves and white flowers. With Japanese Knotweed and other invasive plants inhabiting a vast number of development sites in the UK, and our reputation for excellent and effective treatment, we are sure we will continue to grow. Stem Injection. deformed Japanese knotweed regrowth following treatment with glyphosate-based herbicides. Further, where individuals are acting unreasonably and persistently in a way that has a detrimental effect on the quality of life of those in that locality, for example by allowing the unmanaged growth of knotweed, local Eradicate the roots completely — Once removed, Japanese Knotweed needs to be disposed of to ensure it can’t regrow. • Once knotweed has been effectively controlled using herbicide don’t disturb this land by digging, for example, as it is likely to come back; even if the aboveground parts of the plant are dead, the belowground rhizome system may not be. Japanese Knotweed Chemical Control . Email page . Japanese Knotweed is not an easy plant to control and trying getting rid of or kill Japanese Knotweed yourself is not easy and takes patience! Sci. Stem injection was used to eradicate a stand of Japanese knotweed in the front garden of a house in St Andrews. and H. Witt, 2004. Japanese Knotweed Treatment Plan. Our experts will advise on the best course of action when they visit your site. 2005 … Japanese knotweed (Fallopia japonica var. It grows in dense patches to heights of 10 feet, on sites ranging from strip mine spoil to shaded streambanks. While you could always use a glyphosate herbicide such as Roundup, this can be harmful to the environment. Foliar Spray. The infestation was surrounded by ornamental garden plants so it was not feasible to spray herbicide or dig out the Japanese knotweed. The best commercially sold herbicide to kill Japanese knotweed is Roundup Tree Stump. Whether you should have the affected area excavated or simply treated with herbicides depends on what you intend to immediately do with the land. Japanese knotweed: a particular case in point In the UK, there are four invasive knotweed species, collec-tively referred to as Japanese knotweed sensu lato (s.l. Information Note 2004-A. It is very difficult to remove large or well-established infestations without the assistance of herbicides. Typically blooming between late summer and early autumn, Japanese knotweed flowers are a distinct creamy white colour and … Japanese Knotweed Killer Recipe. Room 5, Television House, 269 Field End Road, Eastcote, Middlesex, HA4 9XA. Thread starter S2Klay; Start date Apr 21, 2020; S. S2Klay LawnSite Member. 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