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Japanese Knotweed Removal Specialists in West Sussex & the South East

Stop the Spread - Protect your Garden and Property Value with effective Japanese Knotweed treatment

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Japanese Knotweed isn’t just a garden nuisance, it’s a legal liability and a serious threat to your property. If you’ve spotted suspicious shoots in your garden or been told knotweed is present, act fast and get in touch with our Japanese Knotweed specialist team.

At The Gardensmiths, we offer expert, fully compliant Japanese Knotweed removal services for homeowners and businesses across West Sussex, East Sussex, Surrey, Hampshire and South London.

With years of experience and the right tools, we tackle the toughest garden challenges that standard maintenance just won’t fix to make gardens and grounds manageable, helping restore a sense of normality once again.

Why Japanese Knotweed Must Be Taken Seriously

Japanese Knotweed is one of the UK’s most invasive and destructive plants. Under the Wildlife and Countryside Act 1981, it is an official offence to cause the spread of Japanese Knotweed into the wild.

1: It can weaken building foundations
2: Kill off native plants in your garden
3: Reduce your property value and may even void mortgage approvals
4: If allowed to spread, you could face fines or legal action

Why choose The Gardensmiths for Japanese Knotweed Treatment?

  • Specialists in Invasive Weeds – We've spent years tackling some of the UK's toughest plant infestations and this has equipped us with the well-rounded expertise required to effectively remove Japanese Knotweed in all areas we tackle.

  • Locally Based – We're familiar with the soil and reoccurring problem zones throughout West Sussex and the surrounding counties. Our team can provide fast-response times to emergency call outs for situations that require drastic attention.
  • Safe & Certified Methods Tailored to your Property – Whether you need root removal, containment or renovation of your neglected area, we provide the right solution for your problem in a safe and controlled manner by following best practices.
  • Ongoing Support – Japanese knotweed removal is a specialised service and we ensure the problem is fully eradicated post-treatment through our monitoring & aftercare support as part of our service.
  • Respect for Your Outdoor Space and Property - We'll carry out our service to the best of our ability whilst avoiding long-term damage to your garden and outdoor foundations.

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Our Process: how we remove your Knotweed 

Step 1 - Free Site Visit & Identification: Think it might be Japanese Knotweed? Our specialists will inspect the area and confirm the species.
Step 2 - Custom Removal Plan: We tailor the strategy to your site: soil type, spread level, surrounding risk and budget. 
Step 3 - Treatment & Removal:​​​​​​​ Depending on severity, we’ll recommend one or more of the following:


🌿 Herbicide Treatment: We spray or inject stems with licensed herbicides. This method requires multiple visits over time to ensure full eradication. Ideal for low to medium infestations.​​​​​​​​​​​​​​
🚜 Excavation & Screening: For larger or urgent cases, we dig out and sift through the soil, ensuring every rhizome is removed. Controlled waste disposal is safely transported off-site.  
♻️ Hybrid Approach​​​​​​​: Often the most effective for the best end-result: combining deep excavation with herbicide monitoring over time.

Residential and Commercial Japanese Knotweed Removal  

For Homeowners: We act fast and respectfully. Our goal is to solve the issue while preserving the natural beauty of your garden. Where needed, we’ll provide documentation to satisfy mortgage lenders and surveyors.​​​​​​​​​​​​​​
For Business and Property Managers: We understand the need for minimal disruption. Our team works discreetly and efficiently, with out-of-hours options available for sensitive sites. 

Areas We Cover Across the South East  

As a local business to West Sussex and the wider South East, we're passionate about helping residential and commercial customers who need our specialist services. When it comes to effective Japanese Knotweed removal, we proudly serve: 

West Sussex - Chichester, Worthing, Bognor Regis, Horsham, Crawley
East Sussex - Brighton, Eastbourne, Lewes, Hasting
Surrey - Guildford, Redhill, Dorking, Leatherhead, Camberley, Oxted, Reigate
Hampshire - Southampton, Portsmouth, Winchester, Basingstoke, Aldershot, Andover, Gosport, Farnborough, Havant
South London - Croydon, Bexley, Bromley, Greenwich, Kingston, Richmond, Lewisham, Lambeth, Southwark

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Frequently Asked Questions

How do I know it’s Japanese Knotweed?
It has bamboo-like stems, heart-shaped leaves and grows rapidly. Misidentification is common so we’ll confirm for free.

Can I remove it myself?
No. Improper handling can worsen the spread and result in prosecution.

How long does treatment take?
Herbicide programs may take 1–3 seasons. Excavation is faster but more intensive. We’ll guide you based on your case.

Is removal guaranteed?
Yes - our removal plans include monitoring, follow-ups and necessary documentation.

What’s the cost for Japanese Knotweed Removal?
It varies by severity and method. All quotes are free and no obligation.

Contact us

Please feel free to contact us for a quote or any other information.
We will use your details to reply to your email, they will not be kept for any other purpose.


Chichester
PO20 3US

07877 945084
[email protected]