As trusted experts we will advise on the best and most cost-effective treatment plan, these can include:
Excavation and removal off-site (Dig and Dump)
The process involves the excavation of the soil then taking the contaminated soil off site using controlled methods to minimise the risk of cross contamination, the process is controlled by strict legislation of waste movements. JKC take total ownership of the project ensuring all legal responsibilities are taken care of on your behalf. Waste is taken to a licensed landfill for which we hold a Waste Carriers Licence and also have preferential rates with tips that are licensed to take the waste. From a decade of experience, we can substantially reduce the amount of spoil taken off site by our specialist and trained team in root tracing.
Excavate and on-site treatment
In time critical projects, it is possible to excavate the infested soil and store in a safe area on-site for future treatment of herbicide. In a controlled move the infestation can be quarantined within the site boundary, clearly marked and protected with a root barrier in place. The barrier would prevent further contamination, leaving the main site available for continued development. The infestation would be treated using stem injection at a later, more convenient time.
Excavate and on-site burial
When the project is time critical and space restricted, it may be possible to excavate the infestation and then bury the contaminated soil in a specially designed interwoven sealed membrane capsule. The site must not be disturbed after excavation and re-burial and clearly marked on all site plans. The Environment Agency need to be advised that this process has taken place and plans approved with them.
Our unique stem injection process, which is proven to be the most effective and environmentally-friendly form of treatment, has been regularly praised in the press. With Japanese Knotweed and other invasive plants occupying 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 involves injecting a concentrate of glyphosate herbicide into each cane of the weed using specialist equipment specifically designed in the treatment of Japanese knotweed.
Japanese knotweed absorbs the glyphosate into the rhizome with a faster absorbency rate than that of foliar spraying. Less risky to the environment, as the injected herbicide has no effect on the surrounding vegetation and is also safe to use near water, stem injection is a more effective eradication method.
Results will be seen within two weeks. From injection the weed goes dormant and visible signs of foliar decay appear within days after treatment. Any canes missed during the process will be visible within the two-week period and a re-application carried out as part of the treatment process. Treatment is not affected by wind, rain or convection. Stem injection can be used at anytime during the growing season.
Environmentally Sensitive Areas
We also specialise in the treatment of Japanese knotweed on or near water by using the stem injection process, which minimises any risk to water and the environment. We have experience in survey and licence requirements and will ensure all documentation is filed and complete with the relevant government organisations.
Foliar application is useful for large swathes of infested sites that are not ecologically sensitive areas nor subject to strict treatment deadlines. Foliar spraying uses herbicides topically – the weed absorbs the herbicide through the leaves.
As such this takes time for the weed to absorb the herbicide down to its rhizome. Only then does this ensure no re-growth occurs. A number of treatments are required for effectiveness and may take up to 24 months to complete. Foliar spraying is dependent on weather conditions and only realistically effective, due to its growth cycle, in the Autumn.
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Identify Japanese Knotweed
Within this app are several ‘tools’ if you are worried that you might have a Japanese Knotweed infestation. Within the identify section are descriptions of the weed at various points of the year, along with close up images of what it looks like at these times.
And if you are worried that you might have an infestation that use the ‘Do I Have Japanese Knotweed’ button to get in touch with us. You can simply enter a few details so that we can contact you with our opinion, then using your device’s camera take a photo of the plant and email that to us. The form will also capture your GPS co-ordinates, which will give us more information about how likely it is that the plant is Japanese Knotweed.