Grazon® Extra

  • Herbicide


  • 4

Grazon Extra is primarily used for brushweed control plus difficult to control broadleaf weeds in fallow situations in northern Australia. In Southern Australia it is the standard for volunteer lucerne removal prior to cereal cropping.

Target Weeds

  • African boxthorn
  • Angophora spp.
  • Australian blackthorn
  • Banksia spp.
  • Biddy bush
  • Blackberry
  • Blue heliotrope
  • Brooms (Cape, English, flax leaf, montpellier)
  • Camphor Laurel
  • Capeweed
  • Casuarina spp. 
  • Chinee apple
  • Cockspur thorn
  • Common sensitive plant
  • Crofton weed
  • Eastern cotton bush (Maireana microphylla)
  • Eucalyptus spp.
  • Fireweed
  • Galenia
  • Giant bramble
  • Gorse
  • Groundsel bush (Baccharis halimifolia)
  • Green cestrum
  • Hawthorn 
  • Horehound
  • Lantana (Lantana camara) (Lantana montevidensis)
  • Lion’s tail (Leonatis nepetifolia)
  • Limebush
  • Manuka
  • Mesquite (Prosopis spp.)
  • Prosopis velutina
  • Milfoil (Yarrow)
  • Mistflower
  • Mother-of-millions
  • Paddy’s lucerne
  • Parkinsonia
  • Paterson’s curse
  • Prickly pear (common) Smooth tree pear
  • Rubber vine
  • Siam weed
  • Sicklepod
  • Spear thistle
  • St John’s wort
  • Sweet briar
  • Tobacco weed
  • Wattle (Acacia spp.) (except corkwood wattle)
  • Wild Rosemary (Cassinia laevis)
  • Wild tobacco tree

Technical Specifications

  • Active Ingredient
    300 g/L triclopyr; 100 g/L picloram, 8 g/L aminopyralid
  • Mode of Action
    Plant cell growth disruption (all pyridines)
  • Formulations
    Emulsifiable concentrate liquid
  • Group


  • Packaging

    1 L, 5 L and 20 L


See full label for details.

Woody Weeds Infestations


Mode of action

Acts on both foliage and roots to provide rapid brownout of leaves, dry down of stems and destruction of the root mass to prevent regrowth.

Residual activity

Ingredients remain active in the soil and prevent seeds of the target woody plants and secondary weeds from germinating for many months after application (in some cases up to two years).


Controls the target weeds without harming pasture grasses.

Additional Resources

Grazon Extra Fallow Technote

Grazon Extra Fallow Technote

Use in fallow situations 

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Rotational Crop Plantback Intervals

Rotational Crop Plantback Intervals

Northern Australia – for the black soils of the Northern NSW  and Qld cropping zones.

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Woody Weed Control Guide

Woody Weed Control Guide

Tailored solutions for your weed control problems 

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Fireweed Management strategies

Fireweed Weesheet

Fireweed Management Strategies 

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