It can cause declines in native plants, including rare or localised species, due to their quick growth and shading out other plants. We are The Invasive Plant Company, industry experts in the delivery of successful, cost-effective solutions for the control and eradication of Japanese Knotweed and other invasive plant species. Under this Act, “an occupier1 must control noxious weeds growing or located on land and premises, and on any other property located on Do not ignore Japanese knotweed when you see it in your garden or building plot. You need the Knotweed Management Company! It’s a large, thicket-forming plant, reaching up to 2m tall, and has become established on stream sides, hedge banks, woodland edges, roadsides, railway banks and waste ground. If you have a Himalayan Balsam problem and want to talk to the invasive weeds experts at Wise knotweed Solutions then call 0808 231 9218 or find your local branch. Despite its attractive appearance, Himalayan Balsam is, just like Japanese Knotweed, considered a problem weed. First introduced to the UK in 1839, its rapid growth and attractive flower made it a favourite with gardeners and the seeds were happily shared and traded. Why Is Himalayan Knotweed A Problem? Japanese Knotweed Ltd are experienced contractors in the surveying and remediation of invasive non-native plant species, including Himalayan balsam. It can grow quickly and costs will grow as the plant does. Himalayan knotweed is just as capable of reducing the value of a property as Japanese knotweed. Himalayan knotweed will grow on most soil types, but does require moisture. If you spot Japanese knotweed, we recommend leaving it undisturbed, and getting in touch with us to confirm your diagnosis and make a start on the removal and management process. Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. Mature leaves are 20 - 40 cm long. Can form dense stands that outcompete native species.Die back in the winter can leave areas vulnerable to erosion. Furthermore, using herbicides in or near canals, rivers or drainage channels within the country may require prior agreement from the Scottish Environmental Protection Agency (SEPA). In Japanese knotweed, male and female flowers are on They are very fast growers and can reach full height by the end of June. An effective Himalayan Balsam control measure for larger strands of the plant is to repeatedly cut or mow the plant. Japanese Knotweed Management offers a survey service that will quantify the extent of the problem and provide a long-term solution. Polygonum polystachum CONTAIN Family: Polygonaceae (Knotweed). It spreads by creeping underground rhizomes and by seed. For any help in removing Himalayan Balsam or Japanese Knotweed, please contact Japanese Knotweed Specialists. It grows in both sunlight and partial shade. Invasive Plant Solutions. Eradicate Himalayan Balsam (Impatiens Glandulifera) from your land. Bohemian knotweed (figures 4 and 5) is a hybrid of Japanese knotweed and giant knotweed and has characteristics of both parents. We are an environmental company specialising in all types of land remediation, based in Co Kerry and we cover the whole of Ireland with our services. The Japanese Knotweed Company is Ireland’s leading Knotweed control company, we specialise in the treatment, control and eradication of Japanese Knotweed throughout the island of Ireland. The creeping rhizomes must be completely removed from a site, which means sifting soil to capture rhizome pieces as small as 2 cm.2 Habitat: Himalayan knotweed can grow in loamy, silty, or sandy soils and can tolerate a pH up to 7.4.2 It does require full sun and moist sites. We’re also part of The LK Group of companies, providing expertise in a range of sectors within the environmental industry. Company registration number: SC1681538 Muriel Street, Barrhead, Glasgow G78 1QB. Himalayan Balsam plants have very shallow roots, therefore, can be pulled straight from the ground. Himalayan Balsam Removal Specialists. Stems are 2-3 m tall and are branched in the upper half. New shoots start to arise during the early spring. Fax 062-71589 | Mobile 086-2621443 Alternatively, you can contact the team using our contact form. Himalayan knotweed is native to south and central Asia, including the Himalayas. As another persistent non-native species, regulatory bodies advise that it is managed in the same way as Japanese Knotweed. [ - Japanese Knotweed Fallopia japonica Invasive Species Identification and Control Guide Species Description Japanese Knotweed is a native plant species in Japan, China and Taiwan. instructions how to enable JavaScript in your web browser. Japanese knotweed, giant hogweed and Himalayan balsam are three of the most common invasive non-native plants in Northern Ireland. They can grow up to 20 cm long and are about ½ as broad. We are The Invasive Plant Company, industry experts in the delivery of successful, cost-effective solutions for the control and eradication of Japanese Knotweed and other invasive plant species. For full functionality of this site it is necessary to enable JavaScript. Canes are hollow and have jointed nodes. If you are undertaking Japanese knotweed, Giant hogweed or Himalayan balsam control with your application, you must submit a 1:10 000 OS map identifying the current distribution of plant species that you propose to treat before control work starts. We are pleased to offer our Japanese Knotweed solutions and other invasive weed removals nationwide to … Himalayan knotweed (Persicaria wallichii) is an aggressive competitor in the Buckwheat Family that was introduced from Asia as an ornamental. Giant knotweed (figure 3) is taller than Japanese knotweed. They hybridize to produce Bohemian knotweed. Himalayan Balsam is an invasive plant with easily identifiable pink or white heart-shaped flowers, that was introduced to the UK in 1839. Himalayan knotweed is native to south and central Asia, including the Himalayas. Knotweeds have often been transplanted during various types of earth movements but at Otterhead are among the surviving ornamental plants in the lost gardens of …  All species were introduced into the U.S. and Canada starting in the late 1800s as ornamental plants and for erosion control and have since spreadwidely. Invasive Species Guide: Himalayan Balsam 1 | P a g e Invasive Species Guide: Japanese Knotweed Photos are sourced from GBNNSS, Trevor Renals and CABI. Weed Control in Natural Areas in the Western United States. Each year after that you must map the affected area following control work, each year. For a copy of the guidance to control Japanese knotweed in construction and landscape contracts contact plant.health@gov.wales. You must prevent Japanese knotweed on your land … Eradicate Himalayan Balsam (Impatiens Glandulifera) from your land. It forms dense clumps which can be up to three metres in height. Pulling or cutting Himalayan Balsam plants before they flower and set seed is the main form of manual Himalayan Balsam removal. If you have problems with Himalayan Balsam, Buddleia and Ragwort to name a few, Wise Knotweed Solutions is here. Therefore, to avoid making a Himalayan Balsam infestation worse, any control measures must minimise the spread of these seeds by removing mature plants. Small areas can be hand dug, although care must be taken to remove as much as the root system as possible. Japanese, Sakhalin, Bohemian, and Himalayan knotweeds . Do not ignore Japanese knotweed when you see it in your garden or building plot. 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