Treating Japanese Knotweed in Hampshire

Japanese knotweed is a highly invasive, aggressive plant found all over the UK, including the county of Hampshire. This invasive weed is detrimental to buildings and countryside across the Hampshire area, from Basingstoke to Southampton.

Why is Japanese Knotweed Such an Issue in Hampshire?

Hampshire, known for both beautiful rural areas such as Hartley Wintney and busy cities such as Winchester, can be a hive for the growth of Japanese knotweed. With one rhizome boasting the ability to spread up to 7m underground, and the plant itself growing 2cm a day, Japanese knotweed can do vast amounts of damage when left without treatment, breaking through garden walls and even crack or block drains.

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Identifying Japanese Knotweed in Hampshire

The first step to treating suspected Japanese knotweed is to correctly identify it. Often mistaken for bamboo or other garden shrubs, this damaging weed can often go unnoticed by many. The sooner it can be identified, the sooner appropriate treatment can take place.  

At Japanese Knotweed Specialists, we support you with identifying Japanese knotweed throughout the seasons. We’re fully accredited by the PCA Invasive Weed Group, the RICS and more, so you can be confident in our service delivery.

Japanese Knotweed Removal Services in Hampshire

We provide a wide range of services to treat and remove Japanese knotweed across Hampshire. Each removal project is approached completely individually and dependent on multiple factors, often including one or multiple approaches from the following:  

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How Is Japanese Knotweed Removed in Hampshire?

Depending on the needs of the site, we will use herbicidal methods such as foliage spraying and stem injection to assist in preventing the spread of Japanese knotweed. If needed, we will then excavate and remove the plant.  

The treatment used will always take into account the intensity of the infestation, the speed at which it needs to be removed, and the ecological state of the site in question.

Why Work with Japanese Knotweed Specialists?

Accredited by the Property Care Association and the Royal Institute of Chartered Surveyors, and a Certificated Surveyor in Japanese knotweed, you can rely on Japanese Knotweed Specialists to deliver market-leading services no matter the project.

We offer:

  • A free assessment – simply send us a photo of the plant you suspect to be Japanese knotweed
  • A 5- and 10-year guarantee when using our eradication services, so you can have peace of mind that you’re in safe hands

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Where Do We Operate?

We work across various areas of Hampshire, including:  

  • Winchester
  • Eastleigh
  • Andover
  • Alton
  • Basingstoke
  • Farnborough  
  • Fleet
  • Gosport
  • Southampton  
  • Portsmouth
  • …and more

Not only do we provide services in Hampshire, but we operate nationally across the UK from South East England to Scotland and everywhere in between.

Working with Japanese Knotweed Specialists

Whether you need support for private or public premises, a consultancy or removal service, you can trust us to deliver effective removal without the hassle.

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If Japanese knotweed has been identified on your property, you can be confident in our teams to deliver an effective, yet considerate service. Our trained staff will be respectful of your home, ensuring disturbance is kept to a minimum where possible, habitats are protected and pipes, gas or plumping will be worked around.

Residential Services


It is best for Japanese knotweed removal to take place before any construction begins on a development site. Our dog surveys and various methods mean we can locate Japanese knotweed year-round, helping to prevent any delays to your project where we can.

Commercial Services

Reach Out for Japanese Knotweed Removal in Hampshire

Get in touch today by calling on 0800 122 3326

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Japanese Knotweed Removal in Hampshire FAQs

Am I legally obligated to remove Japanese knotweed from my property in Hampshire?

According to the Wildlife and Countryside Act 1981, it is an offence to plant or allow Japanese knotweed to spread. You may not be legally obligated to remove Japanese knotweed from your Hampshire property, but failure to prevent it from spreading may cost you £5,000 or even a prison sentence.

I’ve found Japanese knotweed on my Hampshire property – will it devalue it?

The value and success of selling your property with Japanese knotweed present will have varying results depending on the lender. Some may even reject mortgage applications. A surveyor’s report, however, will provide an accurate risk assessment to satisfy some lenders.

How much will Japanese knotweed removal cost for my Hampshire property?

The price of Japanese knotweed removal will vary depending on several elements, including:

  • Size of infestation  
  • Survey results
  • Method needed
  • Ecological state of the site

By considering these elements, amongst others, our experts can assess what is needed for the best price.

What insurance-backed guarantees are available?

Japanese knotweed can be extremely challenging to remove, and despite best practices, it can return. If just 0.2g of the Japanese knotweed rhizome is left behind, it can continue to grow at rapid speeds. That’s why here at Japanese Knotweed Specialists, we can arrange third-party insurance-backed guarantees to ensure you’re always protected. Our insurance-backed guarantees cover:

  • 5-year insurance-backed guarantees
  • 10-year insurance-backed guarantees