Japanese Knotweed Removal Cornwall and Devon serving Redruth, St Austell, Truro, Falmouth, Newquay, Penzance and Surrounding Areas,Exeter,Plymouth,Torquay,

Knotweed Removal in Cornwall
Japanese Knotweed Removal Survey


Cornwall lawn care is knotweed accreditedWe are PCA members (Property Care Association) and also Trust Mark accredited, with qualified certificated surveyors in Japaneese Knotweed.

Please Visit www.southwestknotweed.co.uk for more information

Japanese Knotweed is a highly invasive, non-native species of plant in the UK - and is on the increase.

Japanese Knotweed is not only a problem for our native wildlife, but its vigorous growth can damage hard surfaces and buildings. Lawns, gardens, footpaths and buildings can quickly become infested and it can be particularly hard to control.

Its root structure (rhizomes) are extensive and deep rooted.  It can reach up to 3-4 metres deep and extend up to 6 metres wide. You cannot just rely on a herbicide to treat the structure.

The cheapest, most effective treatment by far is by chemical control, attacking the plant’s rhizome, over a period of time, by a fully qualified member of staff.

We follow the Environment Agency’s Code of Practice for Japanese Knotweed.

Japanese Knotweed Identification

Japanese Knotweed has a stem of bamboo-like appearance, covered in purple speckles,  which is hollow. Its leaves are spade/shield shaped and with a flattened base and pointed tip, arranged in a zig zag pattern on arching stems.

Japanese Knotweed flowers quite late in the season – August to October and has small creamy white flowers hanging in clusters.

The rhizomes are thick, woody and knotty.  When they are broken they have a bright orange coloured centre.

During the winter the leaves die back to leave woody stems which are an orange/brown in colour.  In March and April, new red/purple shoots appear with rolled back leaves.  The rhizome stores nutrients and uses these to help the shoots grow rapidly.  (Up to 40mm per day). 

The plant spreads mainly through the rhizome system – through fragments and cut stems.  It can spread through water courses or systems, fly-tipping of contaminated soil and transportation of infested top soil, to name but a few.

Eradication can be very expensive, with some companies digging down up to 3 metres, transporting the soil and waste to a licensed site.

Cornwall Lawncare can offer a Herbicide Application Programme as an affordable solution.

Book a Japanese Knotweed Survey

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Cornwall lawn care is knotweed accredited

Cornwall lawn care is knotweed accredited