2 or more treatments are often required. wikiHow is where trusted research and expert knowledge come together. Once a week, mow the area to trim down any remaining knotweed until the plant weakens and dies. In an ideal world, you could kill Japanese knotweed yourself over a nice weekend in the garden and not have to worry about the troublesome plant again. How many treatments will it take? If you would like to use chemical treatment – this is an option but will only work with repeat applications of multiple sprays – over several years! Plants commonly grow rapidly in short vigorous bursts but then stop. The cost of dealing with Japanese knotweed is hefty. Treating an infestation yourself is not recommended as waste has to be disposed of very carefully. Japanese knotweed can grow up to 4 metres high and its bamboo-like stems have the ability to sprout up to 10cm in a single day during summer. Joe and his team went far beyond the call of … Japanese knotweed (Polygonum cuspidatum) is a non-native invasive species that threatens our community. As one of the most invasive plants throughout North America and the U.K., you would sooner be asking yourself how to get rid of Japanese Knotweed, rather than how to maintain it. What makes Japanese knotweed so much of a problem is its huge root systems, which are capable of burrowing up to 3 metres deep into the ground and spreading rapidly if even the smallest piece is discarded in the soil. Finding Japanese knotweed in your garden can be quite a punch in the gut. Japanese Knotweed’s root system can extend up to three metres deep and seven metres out from the parent plant, growing through cracks and gaps in and around concrete finishes and floors. At this point, it can be tempting to try and remove the Knotweed yourself, but should be avoided. Japanese knotweed treatment will exhaust the plant from producing aerial growth and prevent its natural spread. There are many specialist firms who can tackle the problem, but it will be a lengthy process. Then, spray a glyphosate weedkiller, like Roundup, on the remaining plant, making sure not to get it on the surrounding vegetation. The herbicide treatment period can also be reduced by using a number of clever techniques to reduce the vigour of knotweed rhizomes. To remove the weed, you should get in touch with a licensed professional who specialises in such work. While it’s always best to treat or remove Japanese knotweed as soon as possible, in most cases it won’t do too much harm to leave it happily growing for the next few weeks. If you plan to buy or sell an affected property, do not undertake a treatment plan you cannot guarantee. Find out more about creating a root barrier. After 7 days, pull out and remove all the dead Knotweed, making sure to … By using our site, you agree to our. 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. Avoid Using “Natural” … Chinese Knotweed is far more easier to eradicate than Japanese Knotweed. Many candidates find the In house training option we provide to be more convenient and cost-effective. This article was co-authored by Lauren Kurtz. Getting Rid of Japanese Knotweed Organically; 7. Treatment methods include stem injection, herbicide spray and leaf wiping. Curious about intermittent fasting? 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