Herbicides for Gorse Control

Gorse shrub in flower

Disclaimer

These herbicide recommendations are made subject to the product being registered for that purpose under relevant legislation. It is the user's responsibility to check that registration or an off-label permit covers the proposed use. Always read the herbicide label.

If in doubt, check with the Registrar of Chemical Products - 1300 368 550 (local call cost in Tasmania).

Wetting agents

Most herbicides require a wetting agent for best results. Carefully consult the product label for specific directions regarding any adjuvants.

Waterways and wetlands

Be careful! Many herbicides can cause damage to waterways and wetlands. Check the herbicide label directions carefully before use near waterways and wetlands. For more information see Guidelines for Safe and Effective Herbicide Use Near Waterways.

Herbicide brands

Herbicides are referred to by the active chemical ingredient in the following tables. Information on available brands containing the herbicide you require should be obtained from a reputable herbicide supplier.

Foliar (leaf) application

Herbicide
(active ingredient)
Commercial products
(content of active ingredient)
Rate of commercial product per litre of water
Withholding
period
Comments
Triclopyr+
Picloram + Aminopyralid
Grazon Extra(300 g/L + 100 g/L + 8g/L)



2.5 ml (bushes 1 - 1.5 m tall)



3.5 ml (bushes > 1.5 m tall)


5 ml
nil
Use in spring to early summer treatments only.
Add a 100% concentrate non-ionic surfactant at 1ml per litre of water for best results.


Autumn Treatment. Add a 100% concentrate non-ionic surfactant at 1ml per litre of water for best results.

Winter treatment only. Brownout may not be complete until summer. Add a 100% concentrate non-ionic surfactant at 1ml per litre of water for best results.



Picloram is soil-residual, hindering the re-establishment of clovers and other broadleaved plants for up to twelve months

In dense stands, access paths should be cleared to allow complete coverage

Regrowth needs to be around 50 - 100 cm high before follow-up treatment

Does not affect grasses, will damage clovers and other broadleaved plants including surrounding trees
Triclopyr + PicloramGrass-up™
(300g/L + 100g/L)
2.5 ml (bushes 1 - 1.5 m tall)


3.5 ml (bushes > 1.5 m tall)


5 ml
nil
Use in spring to early summer treatments only.
Add a 100% concentrate non-ionic surfactant at 1ml per litre of water for best results.

Autumn Treatment. Add a 100% concentrate non-ionic surfactant at 1ml per litre of water for best results.

Winter treatment only. Brownout may not be complete until summer. Add a 100% concentrate non-ionic surfactant at 1ml per litre of water for best results.
Picloram is soil-residual, hindering the re-establishment of clovers and other broadleaved plants for up to twelve months

In dense stands, access paths should be cleared to allow complete coverage

Regrowth needs to be around 50 - 100 cm high before follow-up treatment

Does not affect grasses, will damage clovers and other broadleaved plants including surrounding trees
TriclopyrGarlon 600
(600 g/L)
1.7 ml - 3.4 mlnilApply from spring to mid-summer

Does not affect grasses, will damage clovers and other broadleaved plants including surrounding trees

Use the higher rate on older plants

Preferred to triclopyr + picloram mixture in urban or horticultural areas, and near waterways/wetlands
Metsulfuron-methylBrush-Off
(600 g/Kg)
0.1 - 0.15 gnil(APVMA Off-Label permit - PER8949

Suitable for bushes up to 2 m tall

Does not affect grasses, will damage clovers and other broadleaved plants including surrounding trees

Metsulfuron-methyl is soil-residual, hindering the re-establishment of clovers and other broadleaved plants for up to twelve months
GlyphosateRoundup Biactive
(360 g/L)

Glyphosate 360
(360 g/L)
10 - 15 ml1 dayApply all year round but only if actively growing

Non-selective and will affect grasses, clovers and most broadleaf plants
Ammonium thiocyanateAmitrole T®
(220 g/L)
20 mlOrchards and vines - 56 days

Other areas - nil
Apply during summer or before full flowering

Non-selective and will affect grasses, clovers and most broadleaf plants

Use in restricted spraying areas

Apply to bushes up to 2 m tall

Respraying will be necessary
Glyphosate+Metsulfuron-methylTrounce®
(835 g/L + 10 g/L)
1.7 gnilActively growing (except spring)

Use in restricted spraying areasUse surfactant as directed by label.


Cut-stump application

Herbicide
(active ingredient)
Commercial products
(content of active ingredient)
Rate of commercial product per litre of water
Withholding period for use in pasture
Comments
GlyphosateRoundup Biactive
(360 g/L)

Glyphosate 360
(360 g/L)
1 litre
nil
Use when plants are actively growing

Apply immediately (within 15 seconds) after top growth removal
TriclopyrGarlon 600
(600 g/L)
1:60 in diesel
nil
For cut-stump treatment

Apply immediately (within 15 seconds) after top growth removal (APVMA Off-Label permit - PER8949)
PicloramVigilant® Herbicide Gel
43 g/kg
3 - 5 mm thick layer

5 mm
nil
Stems up 20 mm diameter

Stems greater than 20 mm diameter

In the case of multi-stem plants treat at least 80% of stems including main stems


    Important Disclaimer
    To the extent permitted by law, the Tasmanian Department of Primary Industries, Parks, Water and Environment (including its employees and consultants) excludes all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using information or material (in part or in whole) contained on this website.

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