Guidance leaflet NW10 - Herbicides for the control of noxious weeds in grassland

Date published: 30 March 2017

Last updated: 15 February 2021

In Northern Ireland land owners have a responsibility to control  noxious weed such as thistles and  Ragwort before they seed and spread, and maybe legally required to do so by a DAERA notice. Herbicides are a very useful tool in controlling noxious weeds and ensuring a highly productive pasture.


The following guide gives information on what sprays to use and the best time for applications.

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