Knotweed is becoming an ever increasing problem in Co. Clare. It is capable of undermining masonry constructions, increasing soil erosion along river banks and out competing native species whilst it propagates easily to colonise an area very quickly. It is also costly to remove.

In recognition of this, Clare Local Development Company (CLDC) commissioned a survey in 2021 under our LEADER Biodiversity objective to identify five areas of the county where knotweed is particularly prevalent and to develop an action plan to deal with the problem in each area.

Arising from this, CLDC plans to roll out a collaborative community and agency project to treat, monitor and manage the spread of Knotweed in Lisdoonvarna, Doolin, Miltown Malbay, Connolly and Mountshannon. It is important that these communities are fully aware of the growing problem of invasive alien plants species and the impact of these plants on their respective landscapes. Furthermore, as the use of herbicides may be necessary as part of the treatment programme it is important that people are aware of best practice in the application of these products.

CLDC have engaged Dr. Frances Giaquinto and Nicholas Head to provide a one day practical training course for the control of Japanese Knotweed for community members and landowners living in or near these areas.

Participants will learn how to identify knotweed and to recognise the differences between the various types of knotweed. They will learn to assess the severity of an infestation and to work out the best control method while learning how to use herbicide safely without causing harm to themselves or the environment.

The training is scheduled for July starting with

  • Connolly-5th July
  • Doolin- Date to be confirmed
  • Lisdoonvarna- Date to be confirmed
  • Miltown Malbay-12th July
  • Mountshannon- 13th July.

The training will run from 10am-3pm each day and will be both classroom and field based. All participants will receive a training manual which they can use for future reference.

Click here for detailed information on the training.

To express an interest in participating in the training or to find out more, please email Gerry McDonagh, CLDC at or Fran Giaquinto at

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