Skip to content “How long will it take to get rid of Japanese knotweed?”
It’s one of the first questions homeowners, buyers and developers ask — and for good reason.
Timeframes depend entirely on:
Below you’ll find a clear, side-by-side comparison of removal and treatment timeframes for every method used in the UK.
| Method | Timeframe | Best for |
| Resi-Dig-Out™ | Days | Fast residential removal before landscaping or extensions |
| Xtract™ | Days | Fast commercial removal on development sites |
| Dig and dump | Days | When no other method is feasible |
| DART™ | Days + seasonal herbicide | Cost-effective residential solution |
| Stockpile and treat | Months to seasons | Large sites with space for stockpiling |
| Herbicide treatment | 2–5 growing seasons | Where the ground won’t be disturbed |
| Biological control | Multi-year | Long-term suppression (developing method) |
| Method | Timeframe | Key notes |
| Resi-Dig-Out™ | Days | Fastest residential method |
| DART™ | Days + seasons | Excavation + herbicide |
| Xtract™ | Days | Fastest commercial solution |
| Dig & dump | Days | Fast but costly |
| Screening | Days | Used as supporting method |
| Cell burial | Days | Requires space and correct conditions |
| Stockpile & treat | Months–seasons | Dependent on growth cycles |
| Herbicide | 2–5 seasons | Long-term control |
| Biological | Multi-year | Not widely available |
Yes. Excavation-based methods such as DART™, Resi-Dig-Out™ and Xtract™ can be carried out year-round.
Typically late spring to early autumn, when the plant is actively growing.
Resi-Dig-Out™ removes knotweed in days and can support an insurance-backed guarantee.
Xtract™, with complete removal in days and no landfill required.
Rest assured, where invasive species are identified at an early stage and tackled correctly, problems can usually be avoided. Our specialist consultants complete thorough surveys to identify the extent of the problem. Our plans aren’t one-size-fits-all; they’re customised to tackle the invasive species at your property effectively, taking account of all of your requirements.
Our team of experts is available between 9am and 5:30pm, Monday to Friday to answer your enquiries and advise you on the next steps
Want a survey?
If you already know you have an invasive plant problem, you can request a survey online in less than two minutes by providing a few brief details. A member of the team will swiftly come back to you with further information and our availability.
Need quick plant identification?
Simply upload a few images of your problem plant to our identification form and one of our invasive plant experts will take a look and let you know, free of charge what you are dealing with. We’ll also be there to help with next steps where necessary.
