To remove Japanese knotweed, you must apply ideal methods that have been known to be effective in dealing with the infestation.

This is not a walk-in-the-park exercise, hence the need to be very vigilant and spot-on as to what needs to be done in order to know how to remove Japanese knotweed yourself and get rid of the infestation successfully.

Experts across the board may argue their case in favour of certain methods being more effective than others, but it has been established that only a multi-faceted approach to dealing with this highly invasive weed brings out the best eradication results.  

Before embarking on any method to remove Japanese knotweed, here are some of the factors that you should consider:

Size of the infestation

Where the size of the infestation is rampant and the weed plant is mature, this will necessitate that one contemplates the use of mechanical and chemical tactics to get rid of the weed.

The infestation size will also prompt one to decide whether to deal with the growth by yourself or pool a group of people/professionals to help you.

Any parcel of land can fall victim to the grip of <a href=
Any parcel of land can fall victim to the grip of Japanese knotweed. Remove Japanese knotweed becomes your number one priority

Knowledge of the action/treatment plan

It is important that one gets to familiarize themselves with the particular action plan chosen. This will help save on the time and resources that will be required to tackle the weed plant. 

More so, where chemicals are involved, it is vital that one gets to understand how the chemicals work, the method of applying them to the weed plant, the time duration for applying chemicals, and most importantly, the protective measures to be put in place to protect the surrounding environment.

Availability of resources

To successfully remove Japanese knotweed, and depending on the size of the infestation, you need to gauge the human and capital resources available.

The reason for this is that removing this invasive weed should not be a half-hearted job that should be done once in a while but rather one that demands all hands on deck and consistency until the weed plant is fully eradicated.

Professional advice should be sought to remove Japanese knotweed
Professional advice should be sought to remove Japanese knotweed

Guiding legislations

Taking into consideration that the Japanese knotweed has become a menace that is fast spreading, there are now a number of legislations (they may vary depending on the location) that have been put in place to guard against the unceasing spread of the weed.

For instance, there are guidelines on how the waste materials from either the cut weed plant or its subsequent waste burnt product should be transported and disposed of without posing danger to the environment or allowing a fresh infestation.

Expert involvement

Not all forms of Japanese knotweed infestations can be handled through DIY removal methods. Certain infestations, especially those in commercial areas or protected areas such as national reserves, require the involvement of experts to help out in eradicating them.

Know how to get rid of Japanese knotweed and the damage it will cause
Know how to get rid of Japanese knotweed and the damage it will cause

Methods to Remove Japanese Knotweed

Japanese knotweed removal can be a menace, especially where the weed plant is vastly spread. In order to remove Japanese knotweed, one has to deal with the weed plant with appropriate tact with the aim of completely getting rid of the invasive plant.

The methods that one should consider as a priority are discussed in the following segment:

Using herbicides

Herbicides are basically chemical elements that are industrially manufactured and meant to deal with various weeds in their various forms.

The tested tried and proven herbicides that have been deemed to work with effective results are the Roundup Tree Stump and Glyphosate herbicide for the Japanese knotweed.

Herbicides can be very harsh to the environment; hence because of the high chemical compounds in them, thus when using them, it is only right one ensures they are familiar with the procedure of applying them to the weed plants.

In passing, chemicals are effective if applied directly to the weed plant or the liquid is directly injected into the stems of the weed plants to allow for decomposition from inside out. As a precautionary measure, always ensure that you read the instructions manual of each chemical before usage.

Developing a robust Japanese knotweed treatment plan will ensure you get rid of this persistent weed
Developing a robust Japanese knotweed treatment plan will ensure you get rid of this persistent weed

Physical methods

Here, we are talking about methods such as cutting down the Japanese knotweed stems as close to the soil surface as possible and subsequently getting rid of the cut portions.

The disposal can be achieved either through the complete burning of the waste material that has been cut or through burying. 

Always ensure that the material to be burned is subjected to very high temperatures, preferably using an incinerator so that no fragment survives the exercise.

Either method is effective, but the most important thing to remember is that disposal should always occur at an authorized site that has the license to do such work.

Any waste substance from the Japanese knotweed should never be left unattended as this may be a ticking time bomb because the weed can easily re-grow even from cut rhizomes. 

How to get rid of Japanese knotweed by digging it out
How to get rid of Japanese knotweed by digging it out

Digging out the root system

After successfully cutting the stems of the weed plant, one can go a step further and dig out the weed root system.

If the weed plant is at its premature stage, digging out can be done by pulling out the roots; however, if the weed plant has become mature, you may be forced to hire the services of excavators to do the dirty work for you.

Use of covers

Impenetrable covers are often used as a method to remove Japanese knotweed infestation in an area.

Denying the weed plant sunlight and moisture minimizes its growth and works towards eradicating the weed albeit this process is slow and may require patience.

The trick to making use of covers work is that the top part of the soil should be covered to prevent sunlight and the peripheral parts of the area because of the possibility of rhizomes escaping through the sides and posing a danger of afresh growth.

Use of covers to help remove Japanese knotweed from growing
Use of covers to help remove Japanese knotweed from growing


How to Remove Japanese Knotweed Yourself

There is a multiplicity of methods to remove Japanese knotweed from your property or land.

Some of these methods, such as killing with lime or bleach, have not been validated because this invasive weed can grow in different soils; hence adding lime to increase the soils’ alkalinity may not deter it from growing.

Only use the approved methods at first before trying out anything different.

Want to know more about how to remove Japanese Knotweed?

Knotweed Removal aims to provide the most up-to-date information, help and advice for YOU to make informed decisions. If you are unsure or uncertain about how to proceed, please reach out to us and we will gladly come back and advise you as best we can.

Governmental advice can be found here and the UK law covering the removal of Japanese Knotweed as stated under the Wildlife and Countryside Act 1981 can be found here.

The best means to contact us is via our email –

Do not forget we have a library of blogs covering many areas relevant to Japanese Knotweed, our free downloadable How-to Guides and Product Reviews on the latest methods being employed to eradicate or remove Japanese Knotweed.

Knotweed Removal, UK

Bestseller No. 1
Bayer Garden 2 x Path, Patio & Drive Weed Killer & Watering Can Set - 3 x 8g Sachets per pack treats upto 75sqm - Kills Ground Elder, Nettles, Docks, Couch Grass & Japanese Knotweed.
  • This exclusive twin pack and 9L Watering Set is everything you need for clearing weeds from paths, patios and rives including areas of tarmac, concrete and block paving.
  • Kills tough weeds and their roots including: Ground Elder, Nettles, Docks, Couch Grass, Japanese Knotweed, Brambles, Bracken & Ivy.
  • Each box contains 3 x 8g Simple ready measured soluble doses and treats up to 75sqm. Apply at any time when weeds are showing green leaf and are actively growing.
  • Sold with our durable 9L or 2 gallon capacity galvanised steel watering can with removable brass rose. Colour cannot be guaranteed. Watering can will be randomly picked and despatched.
  • Keep children and pets away from treated areas until the spray has dried.
Bestseller No. 2
Roundup Tree Stump Weedkiller, Super Concentrate 250 ml
  • Kills ivy japanese knotweed, saplings, brambles and nettles to the root
  • Kills up to 16 tree stumps
  • Contains a reusable pipette for specialist treatment of japanese knotweed
  • Kills the roots so weeds don't come back
  • Degraded in the soil by micro organisms
Bestseller No. 3
Weedol 011005 Pathclear Weedkiller Liquid Concentrate, 6 + 2 Tubes
  • Unique dual action fomulation, kills weeds to the root and prevents new weeds growing for up to 3 months
  • Ideal for paths, drives and patios
  • No measuring or mess - just add water
  • Creates an invisible barrier that prevents new weeds for up to 3 months
  • Children and pets need not be excluded from treated areas (once dry)
Bestseller No. 4
RootBlast - RootBlast 360 Glyphosate Home Garden Weedkiller - 1L Bottle with Integral Measuring Device Pair - Includes Pair Of gloves - 1L Makes Up to 50L
  • WEED KILLER CONCENTRATE: Rootblast's strong weed killer is both super-concentrated and tough on most broad leaf and grass weeds. It's specifically designed to bring you the best results by using systematic herbicide technology. It targets weeds from the inside and kills them at their underlying roots, preventing any future growth
  • GLYPHOSATE WEED KILLER: For optimal weed control, Rootblast have created a concentrate weed killer that contains 360g/l of glyphosate. Glyphosate is a broad-spectrum systemic herbicide and crop desiccant that is used by famers. It kills and destroys the weed without affecting the crop. By using glyphosate, Rootblast's weed killer is stronger and more effective than most other weed killers on the market
  • GLYPHOSATE HERBICIDE: This powerful and effective weed killer is designed to target weeds such as dandelion, grasses, docks, nettles, willowherb, bindweed, woody brambles, tree stumps, ivy and more. After applying Rootblast's heavy duty weed killer, the first signs of weed control are visible when the weed leaves yellow - this can take anywhere from a few days to up to 2-4 weeks. From this 1 litre bottle of glyphosate herbicide concentrate, you can make up 50 litres of product when it's diluted
  • DOCK, GRASS & DANDELION KILLER: Alongside this industrial strength weed killer, you'll receive a pair of protective gloves as well as the integral measuring device attached to the bottle. The gloves provide you with protection to ensure your experience is as easy and safe as possible. The integral measuring device is an inbuilt measuring cup, simply remove cap and carefully squeeze the container until the cup is full
  • TOTAL PROTECT WEED GARDEN SPRAY: This easy to use product is available as a ready to use tough, concentrated weed killer that comes with a integral measuring device attached and protective gloves. Use by professional garden and farmers, this product can tackle your weed problem and kill the weed from the root - the ultimate weed killer!
Bestseller No. 5
Rootblast Glyphosate Weedkiller 4 x 100ml Concentrate with 5L Pump Sprayer
  • For use on unwanted vegetation and areas not intended to bear vegetation
  • Contains 72 g/l glyphosate for effective control of annual and deep-rooted perennial garden weeds, including grasses*, docks, nettles, willowherb, dandelion and bindweed. Also suitable for woody brambles, tree stumps and Ivy.
  • Coverage up to 66sqm per sachet

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