Invasive non-native weeds

Non-native plants are those that have been brought in to the country by humans. A small number of these can cause damage to the environment and our health. These are called invasive non-native weeds.

For more advice on how to deal with invasive non-native weeds see GOV.UK

Invasive non-native weed control

Responsibility for dealing with invasive non-native weeds, such as Giant Hogweed, Japanese Knotweed and Ragwort rests with individual landowners. 

We don’t have a role in controlling and managing these weeds unless they are on land owned or managed by us. 

On council owned land:

If these weeds are found on our land and are a concern please contact our Property Services Team on: 01594 810000 

For roads, highways and road verges please contact Gloucestershire County Council on: 08000 514 514

The Forestry Commission will also have policies about managing these weeds on their land.

On privately-owned land:

The landowner is ultimately responsible for the weed’s removal. For guidance on the management of invasive non-native weeds and options where a landowner or occupier fails to take action, see: 

Identifying invasive non-native weeds

For identification guides, with detailed seasonal photographs, see the: Non-native Species Secretariat website

  • Giant Hogweed - has a similar appearance to cow parsley with long, green stems which branch out into clusters of small, white flowers. However, it can grow to over 3 metres and can be identified by its purple-hued stem and leaf stalks covered in spots.
  • Japanese Knotweed - the different seasons bring out different characteristics of the plant with red/purple shoots appearing from the ground at the start of spring, which then grow rapidly into canes and grow leaves.
  • Ragwort – grows up to a maximum height of about a metre and has flat topped clusters of bright yellow daisy-like flowers, generally flowering in late June, July and August. The leaves on mature plants are strongly divided into narrow lobes. The plant has dandelion-like seed heads which can be dispersed over a wide area by the wind. There are other plants that look similar so careful identification is important.