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Japanese Knotweed

Find out about Japanese knotweed, why its become a problem and how to report it.

Search results for 'knotweed'

Japanese knotweed

Japanese knotweed (scientific name Fallopia japonica) is sometimes known locally as 'donkey rhubarb'....Mechanical flails and mowers will also spread the plant.In Cornwall Japanese knotweed has become widespread....It is also therefore an expensive weed to manage.Why it has become a problemJapanese knotweed is not native to Europe.

Last updated: 19/08/2026 09:43:58


Report Japanese Knotweed on Council land

This survey is being undertaken to assist Cornwall Council to control Japanese knotweed on land within its control....The Council is committed to working with the Cornwall Knotweed Forum to control the spread of Japanese knotweed in Cornwall....The reporting of knotweed will not necessarily result in its treatment.

Last updated: 27/05/2026 12:40:07


Invasive plants

Cornwall is currently pioneering work in the control of invasive alien weeds such as Japanese knotweed.

Last updated: 26/05/2026 13:41:39


Neighbouring Open Spaces

We will investigate: exceptional circumstances or significant risk grounds for a high hedge claim invasive plant such as Japanese Knotweed (see below) or there is a covenant or similar in the deeds placing an obligation upon us to maintain the vegetation....Japanese Knotweed or invasive plants growing on the open space side....Use: Report Japanese Knotweed on Council land A tree growing over your boundary Residents will exercise their common-law right to reasonably cut hedges and trees, over their boundary.

Last updated: 13/12/2021 15:04:54


Corserv and the Corserv Group including Cormac & Cornwall Housing

The following Freedom of Information responses cover Cornwall Housing and property and Housing issues, which include responses in relation to homelessness. The following Freedom of Information responses cover Cormac, highways issues, which include responses in relation to surfacing works.

Last updated: 17/08/2021 12:37:08


Problems with trees

For example, Japanese Knotweed, Giant Hogweed and Ragwort.

Last updated: 07/10/2024 10:43:40


Garden waste collections

Yes pleaseGrass cuttingsLeavesOrganic sweepingsTree, shrub and rose pruningsBranches (up to 30cm long and 2.5cm diameter, for example, broom handle width)Cut flowersWeedsWindfall  No thanksCardboard, glass, metal and plasticFood waste, including vegetable peelingsTurf, soil, compost and rubblePlant potsAnimal bedding and faecesInvasive species, such as Japanese knotweed, ragwort, giant hogweed, common ragwort, bambooCompostable bagsCoffee podsProlonging the life of your binThe garden waste bins are designed to take only the items shown under ‘yes please’ above.Please bear in mind that plastic degrades over time due to general wear and tear and the weather.Avoid overfilling or compacting waste as this can damage the bin.The garden waste bins have a 12-month warranty (3 months for bags) for manufacturing defects only.

Last updated: 24/09/2026 15:03:26


Verge maintenance

For example, Japanese Knotweed, Giant Hogweed and Ragwort.

Last updated: 21/04/2026 11:29:50


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