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Control of Noxious Weeds

Control of Noxious Weeds

Under the Noxious Weeds Act, 1936, the Department of Agriculture, Food and the Marine is responsible for overseeing the control and the prevention of the spread of certain weeds.

It is an offence for the owner/occupier of lands not to prevent the growth and spread of noxious weeds.

Owners and occupiers of land must ensure that they abide by the provision in the act.

The following weeds are listed in the legislation:

  • Ragwort (Jacobaea vulgaris)
  • Thistle
  • Dock
  • Common barberry
  • Male wild hop plant
  • Wild oat

Further information on Noxious Weeds and best practice for control are set out in the following documents:



Mechanisms for the Control of Noxious Weeds

Information on methods for the control and safe disposal of Noxious Weeds are published by Teagasc:

Reporting of locations at which Noxious Weeds occur:

Persons wishing to report a location at which Noxious Weeds (ragwort, thistle, dock, common barberry, male wild hop plant and wild oat) are present can do so by completing the attached report form to this Department via the following email address:

Please note

  • This form is only used to report the location of Noxious Weeds. Please see information below if you wish to report the location of Invasive Species.
  • Only forms for which all information fields are completed will be followed up.

Reporting of Invasive Species:

The National Park and Wildlife Service in the Department of Culture, Heritage and the Gaeltacht is responsible for the control and the prevention of the spread of Invasive Species.  The Department of Agriculture, Food and the Marine has no responsibility for Invasive Species. Persons wishing to report the location of Invasive Species such as, but not limited to, those listed below, should visit the following links;

Examples of Invasive Species;

  • Japanese knotweed (Fallopia japonica)
  • Giant knotweed (Fallopia sachalinensis),
  • Bohemian knotweed (Fallopia x bohemica)
  • Himalayan knotweed (Persicaria wallichii)
  • Himalayan balsam (Impatiens glandulifera)
  • Giant hogweed (Heracleum mantegazzianum)

Animal Feedingstuffs, Fertilisers, Grain and Poultry Division