Japanese Knotweed Removal

Japanese Knotweed Treatment Options

Herbicide Application

Our herbicide treatments target Japanese knotweed using either foliar spraying or direct stem injection, depending on the site’s needs as determined by our specialists.

Cost-effective and straightforward
Gradually eliminates above-ground knotweed
Ideal for sites where excavation isn’t feasible

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Excavation and Removal

For complete knotweed eradication, including its root system, our excavation services are highly effective.

Involves digging out affected areas, screening soil, and installing root barriers
Perfect for time-sensitive projects, allowing off-site disposal
Ensures thorough removal of knotweed and its roots

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Understanding Japanese Knotweed

Despite its appealing appearance, Japanese knotweed is classified by the Environment Agency as a highly invasive species. It’s considered “controlled waste” under UK regulations, requiring strict measures for identification, control, and disposal.

Difficult to eliminate without professional intervention
Subject to legal restrictions on spread and disposal
Requires multi-season herbicide treatments or full excavation for rapid results

At Knotweed Solutions UK, we offer expert identification, treatment, and removal services across regions like Manchester, Surrey, and London, all backed by a guarantee for your confidence.

Step 1: Knotweed Identification

Step 3: Tailored Knotweed Management Plan

Step 2: Comprehensive Site Survey

A survey is conducted to assess the extent of the infestation.

Step 2: Comprehensive Site Survey

Step 3: Tailored Knotweed Management Plan

Step 2: Comprehensive Site Survey

Our PCA-accredited surveyors inspect your property and surrounding areas, sometimes using trained sniffer dogs to detect knotweed. We evaluate risks, costs, and environmental impacts.

Step 3: Tailored Knotweed Management Plan

Within 5 working days, you’ll receive:

A detailed report
A clear quote
A customized Knotweed Management Plan (KMP) compliant with the Knotweed Code of Practice

Step 4: Guaranteed Service

Step 3: Tailored Knotweed Management Plan

Our PCA-approved services meet mortgage lender standards and are RICS-compliant. Guarantees range from 5 to 35 years, with optional GPI insurance for added assurance.

Step 5: Ongoing Support

Step 4: Guaranteed Service

Step 5: Ongoing Support

Post-treatment, we monitor your site to ensure no regrowth occurs, providing long-term peace of mind.

Frequently Asked Questions

How can I identify Japanese knotweed on my property?

Japanese knotweed’s appearance varies seasonally. Look for:

Shovel-shaped leaves with pointed tips
Creamy white flowers in late summer
Zig-zag stems
Rapid growth (up to 2 cm per day in spring)
In winter, the plant may appear dormant, but its rhizome (root system) remains active underground.

Why is Japanese knotweed a problem?

Knotweed is highly invasive, capable of damaging buildings, gardens, and infrastructure by growing through concrete and tarmac. It complicates property sales and mortgages, costs the UK economy millions, and is illegal to allow to spread knowingly under UK laws.

Can I remove Japanese knotweed myself?

DIY removal is not recommended. Even a tiny root fragment (0.2g) can cause regrowth. Methods like weedkillers (glyphosate) take years, while bleach or vinegar are ineffective and harmful. Professional treatment, combining herbicide and excavation, is the most reliable solution.

What are the legal implications of Japanese knotweed?

Under UK laws, including the Wildlife and Countryside Act 1981 and the Environment Protection Act 1990, knowingly allowing knotweed to spread is illegal and can result in fines or imprisonment. It’s classified as “controlled waste,” requiring proper disposal.

How long does it take to eradicate Japanese knotweed?

Herbicide treatments require 3–4 growing seasons for complete eradication. Excavation offers faster results, often completed within weeks, depending on the site’s size and infestation level.

What happens after treatment?

We provide ongoing monitoring to ensure no regrowth occurs. Our guarantees (5–35 years) and optional GPI insurance offer peace of mind, and our iTrack system keeps you updated on progress.

Professional Japanese Knotweed Eradication Services