It is a perennial plant, growing each year from its extensive underground rhizomes, and spreads rapidly both by natural means and as a result of human activity. We are the preferred Japanese Knotweed removal specialists, possessing an unrivalled depth of knowledge and commercial experience to help companies, councils, and homeowners alike across South East England. The plant has worked its way into British vernacular—last year, a group of parliamentarians called Theresa May the “ Japanese knotweed prime minister ”; … You may need to do any or all of the following when using chemicals: You may need any of the following to dispose of certain chemicals: You must dispose of chemicals through a registered waste carrier to a permitted waste disposal facility. You must dispose of Japanese knotweed waste off-site by transferring it to a disposal facility that’s permitted, such as a landfill site that has the right environmental permit. Unfortunately, the records of this original discovery were lost for some time, so when more European botanists started exploring Japan some 150 years later, the plant was rediscovered and given a new name by a Bavarian botanist, Phillip von Siebold. It is a perennial plant, growing each year from its extensive underground rhizomes, and spreads rapidly both by natural means and as a result of human activity. David Layland, the joint managing director of Japanese Knotweed Control, based in Stockport, says it is the only thing that works. For this reason, large infestations can often be discovered in overgrown back gardens, or on abandoned industrial sites. Japanese knotweed is spread by fragments of rhizome or stem being transported to new sites. Bolton, Bristol, Conwy, Rotherham and Nottingham are areas in the UK that have been affected the most, however exact numbers are difficult to assess. The plant was originally discovered by Dutch naturalist Maarten Houttuyn in the 18th-Century, he named it Reynoutria japonica, a name which it still goes by today. How common is Japanese knotweed in the UK? Costs for Japanese knotweed removal vary depending on the area that has been affected and the form of treatment that you opt for. Why was Japanese knotweed imported to the UK? Japanese knotweed is a rhizomatous (produces underground stems) perennial plant with distinctive branching, hollow, bamboo-like stems, covered in purple speckles, often reaching 2-3 m high. The strong, almost woody stems of the Japanese knotweed grew up to 20cm a day: a rate previously unheard of. In 2010, the insects were licensed as a means of biological control of Japanese knotweed in England. Japanese knotweed is a member of the buckwheat family. Native to Japan, the plant is considered an invasive species. After you’ve transferred the Japanese knotweed waste at the disposal site you must: You do not need to report the presence of Japanese knotweed on your land. 2 / 2 Company Registration Number – 03943212, England and Wales. It’s not a true bamboo; it’s an aggressive member of the buckwheat family. Siebold and his partner Zuccarini, named the plant Polygonum cuspidatum. Japanese Knotweed is a species of plant that has bamboo-like stems and small white flowers. Japanese Knotweed identification is critical as this invasive plant can have a negative effect on property values. Contact us on 03335 777 888. Don’t worry we won’t send you spam or share your email address with anyone. 633045. Find Japanese Knotweed near England on Yell. Japanese knotweed now grows in almost every area of the UK. Low cost Japanese Knotweed removal by UK specialists working in Midlands Birmingham Cardiff Telford Warsall Shrewsbury Ironbridge Worcester. This is the same year that a nursery in Kingston became the earliest recorded nursery to offer knotweed for sale in Britain. In 2010, the insects were licensed as a means of biological control of Japanese knotweed in England. Polygonum cuspidatum, commonly known as Japanese knotweed or Japanese bamboo, was introduced from eastern Asia in the late 19th century. Despite the alarming rate at which this new discovery grew the Victorians believed that they had it under control. While Japanese Knotweed is becoming an increasing problem in the UK, it’s found more in some regions than others. "Once we inject into it, … Infamous for its devastating ability to cause costly damage to property, Japanese knotweed is the most widespread form of knotweed in the UK. Don’t include personal or financial information like your National Insurance number or credit card details. If you have pictures of your suspected knotweed problem, upload them here. It has been licensed by the UK Government for the biological control of Japanese knotweed in England; this was the first time that biological control of a weed was sanctioned in the European Union.. If you think you’ve found Japanese knotweed and would like some advice on what to do next, then you can contact us. Japenese Knotweed is an invasive plant that is disrupting the lives of citizens across the country. In winter the plant dies back to ground level but by early summer the bamboo-like stems emerge from rhizomes deep underground to shoot to over 2.1m (7ft), suppressing all other plant growth. Left unchallenged Japanese knotweed can spread like a virus across land and into buildings, leeching anywhere from 5-20% off the value of your home. You must only use approved herbicides. All content is available under the Open Government Licence v3.0, except where otherwise stated, Telephone from outside the UK (Monday to Friday, 8am to 6pm GMT), Department for Environment, Food & Rural Affairs, Use a waste carrier to take Japanese knotweed off-site, Control of Substances Hazardous to Health, treatment and disposal of invasive non-native plants: RPS 178, Treatment and disposal of invasive non-native plants: RPS 178, Manage threats to woodland: destructive animals, invasive species, Stop ragwort and other harmful weeds from spreading, Stop invasive non-native plants from spreading, Coronavirus (COVID-19): guidance and support, Transparency and freedom of information releases, they usually infest areas where the compost is used, make sure anyone spraying holds a certificate of competence for herbicide use or works under direct supervision of a certificate holder, cover the plant remains with a material that does not allow the plant to grow through it (known as a root barrier membrane layer), do not bury any other types of waste with it, dispose of Japanese knotweed with other surplus soil, sell soil contaminated with Japanese knotweed as topsoil, check with the waste site in advance to make sure it’s got a permit to accept material containing invasive plants - the waste site may also need time to prepare, tell the waste site that you’re transferring Japanese knotweed waste, brush vehicles down vigorously or jet-wash them to clear them of any Japanese knotweed, inspect your vehicles to check there’s no trapped pieces of plant or rhizome, have more questions about how to handle Japanese knotweed, want to find out more about when you need a licence to dispose of Japanese knotweed, want to complain about waste producers who are not telling people they employ how to transfer Japanese knotweed - this is breaking the rules on their waste duty of care. Note: Only verified records appear on the map. Psyllids were released at these sites in 2011-2013. It goes by the name of Japanese knotweed, or Fallopia japonica. Japanese Knotweed grows freely in Japan and Japan doesn’t suffer from the same affects that we do here in Great Britain. Without professional help, it can be incredibly challenging to deal with. At our head office we have a dedicated team who are on hand to assist our clients with any advice they need. Monday to Friday, 8am to 6pm. The invasive plant is known for spreading quickly and for monopolising gardens. Rotherham It is commonly known as Asian knotweed or Japanese knotweed. We use cookies to collect information about how you use GOV.UK. It produces tiny greenish-white flowers that grow in linear clusters along the stem. Japanese knotweed ( Fallopia japonica ) is a weed that spreads rapidly. Soon the plant was being distributed to garden nurseries around the country and then shared in cuttings by enthusiastic gardeners. Click on a species to see results. What do I do if I find Japanese knotweed. Philip von Siebold brought Japanese knotweed to the UK in 1850, unaware of the impact that it would go on to have on the environment. We refer to these as Japanese Knotweed “hotspots”. This is under review and we hope to be able to extend them soon. The plant was given free rein to spread throughout the country for over a hundred years before being recognised as invasive by the government. It takes over stream banks, forming dense thickets that crowd out all other vegetation. Japanese Knotweed survey. Exposed: The Japanese Knotweed Heatmap is an interactive online heatmap of Japanese knotweed sightings across the UK. Any business wanting to burn Japanese Knotweed waste must register for a waste exemption (if they can meet the conditions) and notify their local EPR waste team at least a week before they intend to carry out the burning. You can contact them for guidance, but it is the responsibility of the landowner to deal with Japanese knotweed. The sites, and paired control sites on which the psyllid has not been released, continue to be closely monitored. In addition to being intentionally spread by people, the plant also began to spread by its own means, populating river banks and finding new routes to the rest of the country along roads and newly built railway lines. Japanese knotweed continues to be a problem for the construction industry, but it is one that is being taken more seriously than ever. The North West of England… You could be fined up to £5,000 or be sent to prison for up to 2 years if you allow contaminated soil or plant material from any waste you transfer to spread into the wild. All the latest news about Japanese knotweed from the BBC Wigan Council will set aside more than £100,000 over three years to tackle destructive plants in … Before you transfer Japanese knotweed waste you must: When you transfer the Japanese knotweed waste you must cover or enclose it in the vehicle so that no waste can escape. 1 It prefers sunny, moist areas, including riverbanks, roadsides, lawns, and gardens. You’ve accepted all cookies. If you are a Tenant, Homeowner, Japanese Knotweed Treatment or Excavation Company, Property Surveyor, Gardener, Local Authority, or Commercial business that is affected by Japanese Knotweed … We strive to operate with professionalism and integrity, not just with our clients, but also our professional network. You could be due significant compensation. We cover the entirety of England and Wales, identifying and treating Japanese knotweed and other invasive weeds. How did Japanese knotweed spread throughout the UK? Take into account the removal of any paving or pipes and the costs could be up to £1,000 per visible square yard. Japanese knotweed has since been designated as an invasive plant by the UK government making, improper disposal or transporting of it a criminal offence. After discovering how quickly the plant could grow in Britain, the horticulturists there recognised Japanese knotweed as a plant that could be easily cultivated and sold on to budding gardeners. Where is Japanese knotweed originally from? It grows to heights of 7 feet (2.1 m), and the roots can be twice that deep. Japanese knotweed can also be burnt as a method of eradication – if the waste belongs to a business rather than a private individual, the EA and local Environmental Health Officer must be notified at least a week in advance (.GOV.UK, 2017). Before the insects were introduced, it cost the UK over £150m a year to control and clear. Their confidence was derived from the fact that only one gender of the plant was imported. You must follow the law if you’ve been employed to transfer goods or material by road and you’re disposing of any waste that has or might have Japanese knotweed in it. You must use a registered waste carrier and an authorised landfill site or suitable disposal site. In its native environment, knotweed is kept in check by natural predators in the form of fungi and insects, not to mention other plants and an environment that can be much more hostile than the United Kingdom. It’s not a true bamboo; it’s an aggressive member of the buckwheat family. We operate not only in and around London, but also nationally around the rest of the UK including South East England, South West England, The Midlands, Northern England, Wales and Scotland. Japanese knotweed thrives in most conditions in the UK and is often found growing on land that has been abandoned or left unattended. Using these statistics, it’s been possible to recognise the areas of the country that have been most affected by Japanese knotweed. Japanese knotweed spreads relentlessly and grows back year after year, meaning you should use a multifaceted approach to eradicate it from your lawn or garden. Japanese Knotweed identification is critical as this invasive plant can have a negative effect on property values. It forms tall thickets with a dense leaf canopy that exclude other plants even bracken. At the time, botany and the cultivation of plants was a popular interest of the upper classes. Clarified that the Environment Agency are not responsible for dealing with Japanese Knotweed. Japanese knotweed is a perennial weed, producing tall canes, up to 2.1m (7ft) in height during the summer. If you think you’ve spotted Japanese knotweed on your land, or in your neighbour’s garden, then please send us an email to knotweed@cobleys.com or call us on 0151 242 9050. The leaves are two to six inches long and broadly oval with somewhat squared bases and pointed tips. You must prevent Japanese knotweed on your land spreading into the wild. Japanese knotweed is an invasive, fast-growing plant that has been slowly spreading throughout most parts of the UK since its introduction in the late nineteenth-century. Due to the current health emergency we have reduced the times our phone lines are open. In its native land, Japanese knotweed can reproduce naturally and also benefits from a prodigious underground system of rhizomes. Japanese Knotweed Brochure . You can bury Japanese knotweed at the site it’s produced as long as you: Where it’s not possible to bury the plant 5 metres deep, you should wrap a root barrier membrane layer completely around the plant remains and bury them at a depth of at least 2 metres. Japanese Knotweed in Surrey – a problem or not? Japanese Knotweed was first introduced in the 1850s and has since spread to occupy at least one site in every 10km2 across England and Wales. Very small fragments of stem/rhizome can give rise to new plants. The plant arrived from Japan to the U.K. and then to North America in the 19th century as a landscaping ornamental. You must make sure that the specialist you use: You do not need to hire a specialist contractor to treat Japanese knotweed, but there are a number of companies that specialise in Japanese knotweed treatment. In 1850, the Leiden nursery despatched an unsolicited parcel of plants, including Japanese knotweed, to the Royal Botanical Gardens at Kew. Soil or plant material contaminated with non-native and invasive plants like Japanese knotweed can cause ecological damage and may be classified as controlled waste. These branches support shovel-shaped leaves. 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