Grassland Weed Control

lush grass

Weed control in grassland 

Choosing the right grassland herbicide for the right situation and applying it at the right time are key to being able to grow great grass.

Use the tables below to find the right solution to a range of weed problems in grassland and to identify the best timing for the control of key weeds.

Use our solutions to grow great grass!

Controlling weeds in pastures is important because they:
  •       Compete with grass for space, light, nutrients and water.
  •       Are unpalatable to stock.
  •       Can be poisonous e.g. ragwort or buttercup.
  •       Take over the pasture and left unchecked limit ability to graze.
  •       Can spread to neighbouring properties.
  •       Make pastures look messy, untidy and unkempt.  


Herbicide control options

A grassland herbicide will not cure the underlying problems but will help renovate the pasture to a more productive level for a period of time.

Knapsack control works out more cost-effective if weed populations are below 5% (count number of docks and/or thistles in a 5m x 7m area – this number gives the % weed population).

Choose a product that will deliver a:

  •       High level of safety so grass growth is unaffected.
  •       Grazing interval that is short so animals can return back to paddocks quickly.
  •       High level of grass safety so grass growth is unaffected.

Products for use in established grassland

Doxstar® Pro

Doxstar Pro is a concentrated formulation controlling all species of docks in established grassland.


Envy is for use in three key areas and controls buttercups, dandelions and other perennial weeds in paddocks and low productivity grassland. 

Forefront T®

Forefront T delivers the highest levels of control of docks, thistles, nettles, ragwort, buttercups and dandelions.

Pas·Tor Agronomy Pack®

Pas·Tor Agronomy Pack delivers long-lasting perennial weed control, including dock, thistle and nettle control all in one convenient box.


Thistlex is a very effective grass-safe translocated product for both creeping and spear thistle.

Grazon® Pro

Grazon Pro contains 60 g/L clopyralid + 240 g/L triclopyr. This combination provides excellent control of broad-leaved dock, curled dock, creeping thistle, spear thistle and common nettle and also has an effect on a large range of other weeds.


Leystar is a selective herbicide for use in newly sown leys, established grassland, grass for seed, forage maize, cereals and cereals under/sown with grass. 

Grassland Weed Control Leaflet

Please download the grassland weed control leaflet to find out more.