Accredited surveys, treatment and removal of Japanese Knotweed in Croydon, including Thornton Heath, South Croydon, and surrounding areas.
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How We Remove Knotweed in Croydon
1. Identification & Photo Review
Think you’ve found knotweed? Send us a photo for free. We’ll confirm and offer next steps. Site visits are available throughout Croydon.
2. Site Survey & Management Plan
If knotweed is confirmed, we’ll conduct an on-site survey and produce a Knotweed Management Plan (KMP) including:
- Full risk assessment
- Recommended treatment strategy
- Fixed-cost quote
- Documents ready for mortgage use
3. Treatment & Removal Options
We tailor removal methods to the property. Our services include:
- Herbicide treatment (spraying and stem injection)
- Excavation & removal (including off-site disposal)
- Sifting & screening (for heavily affected soil)
- Root barrier installation (prevents future growth)
All work complies with PCA guidelines and is carried out by trained specialists.
4. Long-Term Guarantee & Support
We offer 5-, 10-, and 35-year guarantees. Optional insurance backing is available and accepted by mortgage lenders and major housebuilders.

We're recognised by the PCA (Property Care Association) and are members of their Invasive Weed Group (GWC), as well as being RICS approved, TrustMark accredited and SafeCotractor verified.



Why Croydon Is a Knotweed Risk Zone
Croydon has long been known as a knotweed hotspot. Its position between London and the South East, combined with intense development, has made it a breeding ground for invasive species.
Some of the highest risk zones include:
- Thornton Heath, where shared gardens make spread easy
- South Croydon, with redevelopment of older housing stock
- Brownfield areas around former garages and industrial plots
- Housing estates in Addiscombe, where planting mistakes and soil movement are common
Once established, knotweed spreads quickly underground, disrupts paving, cracks walls, and can interfere with drainage and foundations.


Why You Should Act Quickly
Property sales fall through without a plan
Many Croydon buyers use London-based lenders. They often refuse mortgages unless a treatment plan is already in place.
Development is time-sensitive
Delays from knotweed discovery can halt construction. Early excavation and documentation help keep projects on track.
Cost rises the longer you wait
Treatment is more expensive if the plant has reached walls or substructures. Early action keeps costs lower.
Where We Operate in Croydon
Our specialists cover all of Croydon and surrounding boroughs, including:
- Thornton Heath
- South Croydon
- Addiscombe
- Woodcote
- Shirley
- Purley
- Crystal Palace
- Waddon
- Norbury
We also serve the wider South London area and provide services nationwide.
Residential
From semi-detached homes to shared gardens, we work around your property layout to remove knotweed discreetly and completely.
Commercial
We assist property developers, housing associations, and contractors with surveys, documentation, and site remediation across Croydon.
Working with Japanese Knotweed Specialists
We work across multiple sectors, both private and public, to offer our expert services, from consultancy to removal.












FAQs About Knotweed in Croydon
How much does knotweed removal cost in Croydon?
Surveys start at £299 plus VAT. Full treatment plans vary depending on access, soil conditions, and site history.
Do you work with Croydon Council or housing developers?
Yes. We’ve handled removal for council-linked care homes and large developer sites across the borough.
Can I delay treatment until building starts?
We strongly advise against it. If excavation uncovers knotweed mid-build, costs and delays increase sharply.
What happens if knotweed comes back after removal?
Our guarantees include ongoing monitoring and support to prevent regrowth. You’re covered for up to 35 years.
Does DIY treatment work?
No, it often spreads the plant further and voids most guarantees. Always use a PCA-accredited specialist.
