These FAQs and answers are here to help, but please feel free to contact PLR Ltd with any queries you have.
What is 'land remediation' and do you offer this service?
What are invasive plants?
What is Japanese knotweed?
- American bamboo
- donkey rhubarb
- elephant ears
- Hancock’s curse
- Himalayan fleece vine
- Japanese bamboo
- Mexican bamboo
- monkey fungus
- pea shooters
- sally rhubarb
(By the way, despite the names, it is not bamboo or rhubarb.) Close
Where does Japanese knotweed grow?
What are the laws governing Japanese knotweed?
What do I look for?
The earlier shoots look a bit like dark asparagus tips! Soon, purply-green leaves unfurl:
The summer growth is attractive to look at, but it spreads very quickly and can grow 2-3 metres high and crowd out other species. The spade/heart shaped leaves are broad and thin and a bright to mid green and pretty clusters of white flowers bloom. The stems of the knotweed are hollow (like bamboo). They are green with a purple mottle.
Eventually the leaves brown and fall off. The rest of the growth browns and dies back a bit. Next year, new shoots will grow up through those remnants.
Why does having Japanese knotweed on my land matter?
- architectural sites
- canal sides
- concrete foundation
- flood defences
- paved areas
- retaining walls
It can also block water ways meaning, for example, that water traffic is hindered and that flood water can’t flow away.Close
What if I just leave it?
If you discover Japanese knotweed on your land, you must take steps to eradicate it – contact your local Department of the Environment or give us a call. If you do leave it, it will spread… and it can cause a lot of structural damage to patios, walls and buildings. Even worse, you will have real trouble selling it, as mortgage companies are unlikely to grant mortgages if Japanese knotweed is present. Close
How can you get rid of it for me?
Japanese knotweed has a large underground network of roots (rhizomes). To eradicate the plant the roots need to be killed.
It does depend on your circumstances as to the approach we take, but we can either clear the knotweed (or other invasive plants) in situ, or by taking the affected soil away with us and dealing with it in designated sites:
[/wpcol_1half] [wpcol_1half_end id=”” class=”” style=””] In situ in brief
In situ stem injection eradication: Stem injection is suitable for use in areas where sensitivity towards the immediately surrounding vegetation is necessary.
Aquatically approved in situ herbicidal eradication: This method is approved by the Environment Agency for use adjacent to water courses. (Click here for in situ details)
Instant eradication in brief
- Dig and dump eradication
- Soil screening
- Cell burial
- On site stock pile/relocation
- Geotextile non-permeable membranes
We are Environmental Agency approved and fully licensed controlled waste carriers, so you can be sure your land will be cleared. (See details here of the various ‘instant’ options)[/wpcol_1half_end]
If you come to clear our knotweed, will people know? I am worried about word spreading and my land/ property value falling!