Grazon Extra Herbicide (Aminopyralid, Triclopyr & Picloram)

Grazon Extra is the premium control option for foliar applications on hard-to-kill noxious and woody weeds. It contains three active ingredients, offering control of the broadest list of weeds in a single product on the market.

Grazon Extra offers outstanding knockdown and residual weed control and is registered to control of a range of environmental, noxious woody and herbaceous weeds.  

Active Ingredients: Aminopyralid @ 8 g/L, Picloram @ 100 g/L & Triclopyr @ 300 g/L 

Similar or comparable to Woody Extra Herbicide (Apparent Ag)

Click For Technical Info & Tips For Use
4 out of 5 (26 customers reviews)

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This item is large and requires a courier! Ensure a courier can reach your address.
Don’t worry, shipping is STILL FREE!
Click here for shipping info or give us a call.

Ordering multiple large items? They will be shipped on a skid or pallet to ensure that your items arrive safely and securely. The delivery truck will need to be unloaded with a forklift. If you do not have a forklift, please provide an address where a forklift is present.

Grazon Extra Herbicide (Aminopyralid, Triclopyr & Picloram) GRAZON Corteva

Description

Grazon Extra Herbicide

Active Ingredients: Aminopyralid @ 8 g/L, Picloram @ 100 g/L & Triclopyr @ 300 g/L 

Similar or comparable to Woody Extra Herbicide (Apparent Ag)

Grazon Extra Herbicide is the premium control option for foliar applications on hard-to-kill noxious and woody weeds. It contains three active ingredients, offering control of the broadest list of weeds in a single product on the market. Grazon Extra offers outstanding knockdown and residual weed control.

  • Grazon Extra is registered to control a range of environmental, noxious woody and herbaceous weeds.  
  • Grazon Extra moves quickly to the tips of growing shoots and roots where the active ingredients disrupt plant growth. Exceptional results include rapid “brown-out”.  
  • Grazon Extra is the premium option for foliar spraying of tough-to-kill woody weeds and many noxious herbaceous weeds.
  • The ingredients in Grazon Extra Herbicide 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).
  • Grazon Extra controls the target weeds without harming pasture grasses.
  • Grazon Extra Herbicide offers control of the broadest list of weeds in a single product on the market.

Major Weeds Controlled:

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

 

Pack Sizes: 1L, 5L & 20L

Registrant: Dow Agrosciences Australia Limited. (APVMA #:60830)

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4.88 out of 5 stars

26 reviews

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What others are saying

  1. Jason davies

    First time user

    Jason davies

    Worked well on Cape Weed, even on dense patches, it took a bit longer to die (1 or 2 weeks) but stopped new growth and flowering immediately. Have also used on other weeds with good effect. Will kill some grasses but will leave other grass types alone.

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  2. Michelle

    Love this product

    Michelle (verified owner)

    We have been using grazon for quite a few years now. Can’t believe the difference in our 2.5 acres. The weeds are almost non existent and the grass grows beautifully each winter. Will not use anything else where there is grass now. Specialist sales very easy to order from, no hassles with delivery or product.

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  3. Rob

    Great killer for woody pests.Leaves grass untouched

    Rob (verified owner)

    It kills all the woody pests but leaves the grass alone.When I want to kill everything I add roundup equivalent to it and everything is killed.It does not effect trees.

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  4. Susan

    Grazon

    Susan (verified owner)

    Quick postage
    Works very well very pleased with the product.

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  5. Simon

    Simon (verified owner)

    Been very happy with this. Finally a product that will reliably kill all the hard to kills.

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  6. Anthony Kain

    Second purchase

    Anthony Kain (verified owner)

    I found this product excellent. Worked very well for me in my quest to irradiate wild blackberry which was taking over. Very eff

    (0) (0)

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  7. Mal

    Grazon Extra

    Mal (verified owner)

    Target aim to knock off Blackberry amongst native vegetation. So far excellent results found. Grazon Extra is working a treat.
    Purchased from Specialist Sales, a perfect Australian company to deal with. Very easy transaction, product packaging was perfect and speedy delivery. Thank You Specialist Sales.

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  8. Paul Abrey

    Unbelievable

    Paul Abrey (verified owner)

    Easy to use and incredibly effective, trouble free ordering and delivery from Specialist Sales. Very happy!

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  9. michael overington

    grazon extra

    michael overington (verified owner)

    this product is first class to remove gorse from paddocks that i graze

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  10. Chris

    Grazon Extra

    Chris (verified owner)

    Too early to tell yet as gorse is very, very stubborn but fingers crossed we get a good kill.
    Specialist Sales provided prompt delivery and product arrived in perfect condition.

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  11. Raymond Fuller

    Grazon Extra

    Raymond Fuller (verified owner)

    I use this product frequently and usually buy local, but I couldn’t get 5 litre containers of it so I went online and found SpecialistSales who do, and also offer free delivery, excellent service all at a very competitive price. The transaction went flawlessly and the order was delivered rather quickly. Would definitely use this company if I need more of similar products.

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  12. Lana

    Grazon extra

    Lana (verified owner)

    Great product, find it excellent on cape weed, Bindi and all broad leaf weeds, I like the 1ltr ideal for my small garden.

    (0) (0)

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  13. Nigel Ayres

    Excellent

    Nigel Ayres (verified owner)

    Used in a small towable boom sprayer does a brilliant job of removing multiple weeds including thistles etc. you can really see the difference between sprayed and not sprayed areas within a few days.
    Also like the fact it is not affected by rain after 1 hour.

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  14. John Morgan

    John Morgan (verified owner)

    Very effective on a variety of weeds.

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  15. Natasha

    Great product and service

    Natasha (verified owner)

    Great service from the team, answered my phone calls, helped with questions, product delivered quickly

    (0) (0)

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  16. Angelina

    Best herbicide for wandering jew!

    Angelina

    This is the best product we have found for controlling wandering jew – native and exotic one. It also works well on other common weeds we have on the property in the grass. Excellent delivery times and great price

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  17. Ross

    Lantana killer

    Ross (verified owner)

    Great product. Knocks the crapp out of lantana which is why i purchased it. Not expensive for what it does and other weeds that it controls. Suits my purpose for control of the lantana and other noxious weeds.
    Also great customer service. Product arrive well before expected. A top company to deal with. Questions asked about products, always answered, and with advice.

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  18. Bev Tucker

    Great customer service

    Bev Tucker

    Order received within 4 working days of order- thank you.

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  19. Liz Day

    Horehound

    Liz Day (verified owner)

    It is really struggling to eliminate horehound. Plants about 10 cm high, seems to have hit them a little after 4 weeks. Will re apply.,

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    • specialistsales

      specialistsales

      Hi Liz. Please ensure you are applying Grazon Extra to Horehound pre-flowering and that the plants are being covered thoroughly.

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  20. andrew-5071

    Works a treat

    andrew-5071 (verified owner)

    Yes, prompt delivery and does exactly what it says it will do. We have a vast weed issue across a large paddock area and was looking for the right solution to the issue and believe it has been found.

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  21. Mick Clarke

    Service

    Mick Clarke (verified owner)

    Great Service, good information, highly recommended
    very effective product

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  22. Ranid May

    Grazon Extra

    Ranid May (verified owner)

    Awesome product which is very effective and easy to use and good value

    (0) (0)

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  23. Rob

    Excellent Product

    Rob (verified owner)

    Very effective herbicide. Easy to use

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  24. Ian 'David' Blake

    Great product, top service

    Ian ‘David’ Blake (verified owner)

    This is the Rolls Royce for woody weeds in the tropics, especially lantana

    (0) (0)

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  25. Bibi Liati

    Excellent product

    Bibi Liati (verified owner)

    Exactly as I expected

    (0) (0)

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  26. One person found this helpful
    Heidi

    Thoroughly Recommended

    Heidi

    This product significantly reduced the amount of Patterson’s Curse, Capeweed and other woody weeds from cropping up from last season when I sprayed with Grazon Extra. So much so in fact that I was able to spot spray this season the little amount of weeds that popped up, with the backpack rather than using the boom on 12 acres. Thoroughly recommend this product if you have horses and have to deal with Patterson’s Curse, Capeweed and other woody weeds.

    (1) (0)

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Features & Benefits

  • Grazon Extra includes the active ingredients Picloram and Triclopyr used in Grazon DS, plus the new ingredient Aminopyralid.’  
  • ‘Extra’ Tough on Noxious Weeds & Woody Weeds.  
  • Grazon Extra is registered to control of a range of environmental, noxious woody and herbaceous weeds.  
  • Grazon Extra moves quickly to the tips of growing shoots and roots where the active ingredients disrupt plant growth. Exceptional results include rapid “brown-out”.  
  • Is the premium option for foliar spraying of tough-to-kill woody weeds and many noxious herbaceous weeds.
  • 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.
  • Leaf brownout and distortion of stem tips will normally be obvious within a week of application.
  • 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.
  • Grazon Extra offers control of the broadest list of weeds in a single product on the market.

Directions Of Use

Application Rate:

  • For most weeds the rate of Grazon Extra to apply is between 350 and 500 mL per 100 litres of water.
  • Always check the label for the correct rate.

Application Methods:

  • Apply as a foliar spot spray to completely wet all leaves and stems. Coverage should be to the point of run-off in that the chemical mix is just beginning to drip from the leaves once the spraying is completed. Think of painting a wall and use that motion in your spray action to achieve full coverage of the foliage, then use a more directed stream to thoroughly treat the stems and canes.
  • This type of application is called high volume spraying as you are applying a large amount of spray mixture to the target weeds. Provided that good coverage of the target weed is possible, high volume spraying can be completed using a variety of equipment – from a small hand pump unit to a knapsack sprayer through to a large motorised pump and handgun unit.
  • With a foliar spray you are looking to capture enough chemical on the foliage to kill not only the above-ground portion of the weed but all of the root mass as well, so good coverage is essential. If you are spraying very large weeds like blackberries that are several years old, ensure that canes on the inside as well as the outside of the foliage mass receive direct contact with the applied spray. 
  • As a guide, one hectare of blackberries 1–2 metres in height will typically require a spray volume of 3000–4000 litres to be thoroughly covered, whilst the same area of a small herbaceous weed such as ragwort will require 500–1000 litres. 
  • Always refer to the label & directions before using, as some conditions apply to certain weeds, areas of use etc.  Further details of use can be found in the Direction of Use section on the Product Label.

Rates are a general guide only. Before opening, carefully read Grazon Extra Herbicide Directions for Use, Precautionary and Protection Statements, Storage and Disposal, Safety Directions and First Aid Instructions.

Questions and answers from customers

    Can I use Grazon Extra Herbicide to control burrs?

  1. Q Can I use Grazon Extra Herbicide to control burrs?
    Asked by Brett on December 4, 2023 1:15 pm
    Answered by the admin

    Although Grazon Extra Herbicide is registered to control many species of thistles, it is not recommended or registered to control any 'burr' species. We recommend to control burr 2,4-D Amine 300 Herbicide, Lantana 600 Herbicide, 2,4-DB 500SC Herbicide, OzCrop LVE MCPA 570 Herbicide, Sabakem Fluroxypyr 400 Herbicide, or Dicamba 500SL Selective Herbicide. Always read the 'directions for use' carefully, ensuring suitability for the burr species you are targeting and your situation.

  2. Does Grazon Extra Herbicide control convolvulous?

  3. Q Does Grazon Extra Herbicide control convolvulous?
    Asked by Robin on September 28, 2023 1:35 pm
    Answered by the admin

    Convolvulus is a genus of about 200 to 250 species of flowering plants in the bindweed family Convolvulaceae. Common names include bindweed and morning glory. Grazon Extra Herbicide is not recommended or registered to control Bindweed (Convolvulus). Herbicides including 2,4-D 625 Amine Herbicide, Dicamba M,  Metsulfuron, Glufosinate 200, Buckwheat Cereal Herbicide (Picloram & MCPA ), and Fluroxpyr 400 are all registered for certain varieties of Bindweed in differing situations. Always read the "directions for use' carefully to ensure suitability to your situation.

  4. Will Grazon Extra Herbicide kill Qld Heart-leaf Poison Bush?

  5. Q Will Grazon Extra Herbicide kill Qld Heart-leaf Poison Bush?
    Asked by Marisa on September 23, 2023 3:11 pm
    Answered by the admin

    Grazon Extra Herbicide is not recommended or registered to control Heart-leaf Poison Bush (Gastrolobium grandiflorum).  To our knowledge, Access Herbicide is the only herbicide registered to control Heart-leaf Poison Bush as a basal bark or cut stump application.  Always read the 'directions for use' label carefully to ensure suitability to your situation.

  6. When clearing Blackberries around a dam, can the dam still be used for livestock to drink from, or would we wait a period of time? How long after application should you wait before slashing the dead blackberries?

  7. Q When clearing Blackberries around a dam, can the dam still be used for livestock to drink from, o...... Read more
    Asked by Mike H on September 12, 2023 4:02 pm
    Answered by the admin

    Although Grazon Extra Herbicide is registered to control blackberry, it should not be applied when the herbicide may end up in a waterway. Grazon Extra Herbicide should not be used under weather conditions or from spraying equipment that may cause spray to drift onto nearby susceptible plants/crops, cropping lands, pastures, waterways or native vegetation. You should also ensure that physical spray drift onto waterways, native vegetation and susceptible crops is not allowed. There are also individual state and council laws that need to be investigated before the application of herbicides around waterways. Do not burn off, cut or clear blackberry or other woody weeds for at least six months after spraying.

  8. Can I slash a roadside embankment of small gum trees, wattle and thick aftergrowth, etc. and spray Grazon Extra immediately onto all stumps to kill current and reduce future sapling growth?

  9. Q Can I slash a roadside embankment of small gum trees, wattle and thick aftergrowth, etc. and spra...... Read more
    Asked by jarron on September 5, 2023 4:38 pm
    Answered by the admin

    Grazon Extra is formulated to be applied to actively growing foliage. Grazon Extras 'directions for use' don't recommend 'cut stump'/ 'brush cut' as a suitable application method. Grazon can be applied as a foliar application to new gum & wattle regrowth after slashing. Other herbicides recommended for cut stump applications, such as Access Herbicide & Tordon Regrowthmaster, need to be applied to the cut stump immediately, as the sap will set very quickly and repel the application of herbicides.

  10. Will Grazon Extra Herbicide kill tubers, on or in the soil, from Madeira Vine?

  11. Q Will Grazon Extra Herbicide kill tubers, on or in the soil, from Madeira Vine?
    Asked by Peter Koch on August 15, 2023 2:35 pm
    Answered by the admin

    Grazon Extra Herbicide is registered to control Maderia Vine on AVPMA Permit # 11463 as a foliar application.  Please refer to the Department of Agriculture & Fisheries invasive species link https://www.daf.qld.gov.au/__data/assets/pdf_file/0008/59336/madeira-vine.pdf  for further detailed information regarding rates and critical comments.

  12. Will Grazon Extra Herbicide kill a 3-metre-high Kentia palm by spraying the foliage?

  13. Q Will Grazon Extra Herbicide kill a 3-metre-high Kentia palm by spraying the foliage?
    Asked by Warren on August 12, 2023 9:13 pm
    Answered by the admin

    Grazon Extra Herbicide is not registered or recommended to control palm species, including Kentia Palms. An 'off-label' application of Grazon Extra Herbicide plus a penetrant could be undertaken as a trial, and attention would need to be taken to ensure that all the foliage is sprayed. However, results can't be guaranteed. Other products, such as Tordon 75-D, are registered to control Zamia Palms when used as a stem injection, but whether Kentia Palms would also be susceptible is unknown.

  14. Will Grazon Extra Herbicide control Horehound ( Marrubium vulgare) when spot spraying? Should I also add MCPA and or Kamba?

  15. Q Will Grazon Extra Herbicide control Horehound ( Marrubium vulgare) when spot spraying? Should I a...... Read more
    Asked by Geoffrey on July 31, 2023 11:52 am
    Answered by the admin

    Grazon Extra Herbicide is registered to control Horehouse (pre-flowering) when mixed at a rate of 350mL per 100L and applied as a foliar spray. If you wanted to add another herbicide to your spray mix to enhance the killing power over Horehound, we would suggest a compatible herbicide such as 24D Amine 700. We recommend including a suitable wetting agent, surfactant or penetrant to guarantee the best results.

  16. Can I use Grazon Extra Herbicide in my carpet wick wiper to target fireweed in a pasture where cattle graze?

  17. Q Can I use Grazon Extra Herbicide in my carpet wick wiper to target fireweed in a pasture where ca...... Read more
    Asked by Robyn on July 23, 2023 7:20 pm
    Answered by the admin

    When used to control fireweed, the Grazon Extra Herbicide 'directions for use' recommendations to apply as a foliar spray, thoroughly wetting the plant's leaves.  A wick wiper may not provide sufficient coverage to the foliage of the fireweed, thus giving poor results.

  18. I have probably 4 acres that have a lot of Lomandra, Tea Trees and Swamp Grass. Will Grazon Extra Herbicide work to kill these? 

  19. Q I have probably 4 acres that have a lot of Lomandra, Tea Trees and Swamp Grass. Will Grazon Extra...... Read more
    Asked by Michael on July 9, 2023 7:20 pm
    Answered by the admin

    Grazon Extra Herbicide is a selective herbicide designed to kill woody weeds that are broadleaf species. It is not recommended for killing grasses, so it is important to ensure that you are targeting the correct type of weed before using this herbicide. Unfortunately, Lomandra and Swamp Grass are not broadleaf species, so they are unlikely to be affected by Grazon Extra, and Tea Tree is not listed as a species controlled on the Grazon Extra label. The recommended method to control Tea Trees includes Garlon 600 or Access Herbicide, either applied as a basal bark spray or cut stump application. Alternatively, Tordon Regrowthmaster can also be applied via stem injection. Lomandra, Swamp Grass & various rush species are very difficult to control. A general 'off-label' method is often used whereby the old, hard leaves/growth is removed. Once new growth appears, it should be sprayed with a potent mix of glyphosate and penetrant. Repeat applications are likely to be required.

  20. Will Grazon Extra Herbicide kill Chinese bush (Cassinia arcuata) when painted on the cut stem of a bush?

  21. Q Will Grazon Extra Herbicide kill Chinese bush (Cassinia arcuata) when painted on the cut stem of ...... Read more
    Asked by Shane on July 5, 2023 2:28 pm
    Answered by the admin

    Grazon Extra is registered only as a foliar application for controlling Chinese Shrub/ Sifton Bush (Cassinia arcuata). Grazon Extra makes no recommendations on the 'directions for use' label of an application using the cut stump/stem method. The registered 'directions for use' are available on the Grazon Extra Herbicide website page. Scroll down to the 'SDS & Technical' tab and select; a PDF will be available to download or print. You may conduct an off-label test by applying Grazon Extra via cut stump application. However, there are no guarantees of success.

  22. Will I get a better kill on blackberry by adding spray adjuvant to Grazon Extra Herbicide?

  23. Q Will I get a better kill on blackberry by adding spray adjuvant to Grazon Extra Herbicide?
    Asked by Peter on July 2, 2023 11:08 pm
    Answered by the admin

    Adding a surfactant/ adjuvant /or penetrant to the tank mix with Grazon Extra will ensure a better result, particularly when plants have waxy or hairy foliage. Surfactants/ adjuvants /or penetrants maximize spray application by wetting and sticking the herbicide to the plant by lowering the surface tension of the spray droplet. Penetrants (i.e. Consume Penetrant) also assist in penetrating the plant by forcing the active ingredient deep inside the weed tissue, where it is translocated to the root system, creating a greater success rate in completely eradicating the weed. 

  24. I have eucalyptus saplings emerging in a paddock that was recently cleared. They are about 1.5 meters tall. Is Grazon Extra Herbicide the best product and how should I apply?

  25. Q I have eucalyptus saplings emerging in a paddock that was recently cleared. They are about 1.5 me...... Read more
    Asked by Adam on June 12, 2023 6:43 pm
    Answered by the admin

    Grazon Extra Herbicide is an excellent option to control Eucalyptus sapling regrowth. Grazon Extra 'directions for use' recommend a foliar spray application to Eucalyptus seedlings and regrowth from small lignotubers 1-3m tall at a rate of 350mL to 500mL of water, applying the higher rate where difficult-to-control species regrowth is present. We recommend adding a penetrant to improve results, i.e. Consume, Eurochem or PCT Reactor Penetrant. Always read the 'directions for use' carefully before application. This can be found on the product page in the  SDS & Technical tab. A PDF file is available for download or printing.

  26. Will Grazon Extra Herbicide kill Leucaena?

  27. Q Will Grazon Extra Herbicide kill Leucaena?
    Asked by Brett on June 5, 2023 10:25 pm
    Answered by the admin

    Grazon Extra is currently registered under Australian Pesticides and Veterinary Medicines Authority permit PER11463 to control Leucaena leucocephala as a foliar application for seedlings only at a rate of 350mL/100L water.  Other registered herbicides for the control of Leucaena are Access as basal bark or cut stump application at a rate 1L per 60L diesel, or Vigilant II Gel applied directly to cut stems no higher than 10cm above ground level, 3-5 mm thick over cut surface.

    For further information on the control of Leaucaena - https://www.daf.qld.gov.au/__data/assets/pdf_file/0019/73450/leucaena.pdf

  28. I usually buy the Grazon Extra Herbicide 1 litre but was thinking about the 5-litre container. Grazon Extra Herbicide 5 litres will probably last me two years. Is there a use-by date?

  29. Q I usually buy the Grazon Extra Herbicide 1 litre but was thinking about the 5-litre container. Gr...... Read more
    Asked by Paul on May 3, 2023 12:58 pm
    Answered by the admin

    Grazon Extra Herbicide does not have a best-before or expiry date.  The best practice for this herbicide is to try to use the contents within approximately five (5) years from the date of manufacturer.

  30. Hi, What is the purpose of having 8g/l Aminopyralid in the ingredients? What does this achieve?

  31. Q Hi, What is the purpose of having 8g/l Aminopyralid in the ingredients? What does this achieve?... Read more
    Asked by David on April 30, 2023 4:46 pm
    Answered by the admin

    When added to other active ingredients, such as triclopyr & picloram, aminopyralid can enhance the effectiveness of the herbicide by providing additional control of certain broadleaf weed species. Aminopyralid disrupts the growth and development of the target weeds, leading to their eventual death. It's also important to be aware of the potential for aminopyralid to persist in the soil for an extended period.

  32. Does Grazon Extra Herbicide kill running bamboo? If yes, is it best to chop the bamboo down and then apply it to regrowth or should we apply it to the leaves on the mature stand?

  33. Q Does Grazon Extra Herbicide kill running bamboo? If yes, is it best to chop the bamboo down and t...... Read more
    Asked by Judy hurditch on April 19, 2023 8:45 am
    Answered by the admin

    Grazon Extra Herbicide is registered to target specific species (mainly broadleaf) without harming grasses. Grazon Extra is unlikely to have any effect on controlling bamboo. Bamboo Grass is usually sprayed with Flupropanate or Glyphosate Herbicides. Flupropanate is currently unavailable, possibly returning to market later in 2023. Glyphosate can be applied as a Spot spray. Remove tops of bamboo shoots and spot spray actively growing foliage and regrowth 1–2 m high. It can also be used via the Cut stump method, where you cut stems back to 20 cm tall and immediately pour herbicide down the hollow stem and wet the cut). Refer to the Glyphosate label for mixing rates.

  34. If we use Grazon Extra Herbicide, can horses be re-introduced to the area, is there a withholding period and will grass grow back in the area sprayed? 

  35. Q If we use Grazon Extra Herbicide, can horses be re-introduced to the area, is there a withholding...... Read more
    Asked by John on April 13, 2023 4:52 pm
    Answered by the admin

    Although not stated on the Grazon Extra Herbicide label, removing horses while spraying is considered the best practice. The re-entry period is usually long enough for the chemical to dry and be translocated through the plant. Twenty-four hours would be more than adequate. You do need to be aware of any plants that may become poisonous once sprayed. Toxic plants may become more palatable after spraying, and stock should be kept away from these plants until they have died down. Many plants remain poisonous after death, and stock should not be allowed access, as there is a likelihood that they may graze the dead material. Such material should be burnt if possible. The Withholding Periods for Grazon Extra only apply to livestock destined for slaughter or export markets. Grazon Extra should not kill the grass if it is applied at the correct rates. If the chemical is being used by high-volume hand spraying, the volume of the chemical may be applied higher than recommended, so care must be taken. The result may be some damage to the grass due to phytotoxicity.

  36. Once a paddock has been sprayed with Grazon Extra Herbicide, how long would I be able to plant a fruit orchid?

  37. Q Once a paddock has been sprayed with Grazon Extra Herbicide, how long would I be able to plant a ...... Read more
    Asked by Michael on April 7, 2023 7:13 am
    Answered by the admin

    Grazon Extra Herbicide contains two active ingredients that can persist in the soil for a lengthy period after application. Picloram degrades very slowly, with half-lives in the soil ranging from 167 to 513 days. Aminopyralid photodegrades slowly in soil, at a moderate rate depending on the soil type, with a half-life range of about 31.5 days to 193 days. These residues may affect the health of fruit trees if they are still present in the soil.

  38. What is the mixing rate for Grazon Extra Herbicide when spraying Mesquite and/or Parkinsonia?

  39. Q What is the mixing rate for Grazon Extra Herbicide when spraying Mesquite and/or Parkinsonia?
    Asked by Rob on January 19, 2023 10:05 am
    Answered by the admin

    As per the APVMA registered 'directions for use' for Grazon Extra Herbicide, which can be found on the product screen under the SDS & Technical tab, advise the rate of application for both Mesquite & Parkinsonia is 350mL / 100L water.  Please read the 'directions for use' carefully before applying for critical comments regarding the application.

  40. Can Grazon Extra Herbicide be used near waterways? For example, the banks of creeks?

  41. Q Can Grazon Extra Herbicide be used near waterways? For example, the banks of creeks?
    Asked by Alex on January 19, 2023 3:19 am
    Answered by the admin

    Grazon Extra Herbicide should not be applied when the herbicide may end up in a waterway.  Grazon Extra Herbicide should not be used under weather conditions or from spraying equipment that may cause spray to drift onto nearby susceptible plants/crops, cropping lands, pastures, waterways or native vegetation.  You should also ensure that physical spray drift onto waterways, native vegetation and susceptible crops is not allowed.  There are also individual state and council laws that need to be investigated before the application of herbicides around waterways.

  42. What do you recommend to kill suckers that are invading my yard after the removal of a Gleditsia Tree? The stump was not poisoned and has since been removed.

  43. Q What do you recommend to kill suckers that are invading my yard after the removal of a Gleditsia ...... Read more
    Asked by Rosemary on January 2, 2023 2:16 pm
    Answered by the admin

    Herbicides used to kill sucker regrowth in domestic situations should be cautiously handled.  Spray drift or application close to non-target plants may result in severe damage or death, hence why these herbicides are not registered or recommended for domestic use.  For sucker regrowth control, the following chemicals are often used.  1) A mixture of Grazon, Metsulfuron and a Wetting Agent, 2) Access Herbicide + Diesel & 3) Vigilant II Herbicide Gel.  The Vigilant Gel is the safest option as it is a cut-and-paint application method that reduces damage to non-target species.  

  44. Does Grazon Extra Herbicide kill Scotch Thistle?

  45. Q Does Grazon Extra Herbicide kill Scotch Thistle?
    Asked by Wayne on October 9, 2022 5:48 pm
    Answered by the admin

    Grazon Extra Herbicide is not registered to control Scotch Thistle (Onopordum acanthium).  We suggest herbicides such as MCPA 750 Herbicide, Kamba 750 Herbicide (Dicamba) or Clopyralid Herbicide as better options to control Scotch Thistle. 

  46. Regarding the grazing WHP on Grazon Extra Herbicide, for the domestic stock going to slaughter, is there a time interval required between application and grazing?

  47. Q Regarding the grazing WHP on Grazon Extra Herbicide, for the domestic stock going to slaughter, i...... Read more
    Asked by Warwick on October 6, 2022 7:32 pm
    Answered by the admin

    The label for Grazon Extra Herbicide advises that stock grazing treated pastures are not subject to a withholding period (WHP) when the herbicide is used as directed.   This applies to domestic animal commodities destined for human consumption and has no bearing on livestock remaining on the property.

  48. Do you ship to Canada?

  49. Q Do you ship to Canada?
    Asked by Robert Oddie on August 30, 2022 12:18 pm
    Answered by the admin

    We do not ship Grazon Extra Herbicide outside of Australia.

  50. Will Grazon Extra Herbicide kill stinging nettle?

  51. Q Will Grazon Extra Herbicide kill stinging nettle?
    Asked by Terry on August 20, 2022 9:28 am
    Answered by the admin

    Grazon Extra Herbicide is not registered for or claims any control over stinging nettle.  We recommend products such as 2,4-DB 500SC Herbicide, Bromicide 200 Selective Herbicide, or 2,4-D Ester 680 Herbicide for stinging nettle control.

  52. Will Grazon Extra Herbicide kill giant Devils Fig?

  53. Q Will Grazon Extra Herbicide kill giant Devils Fig?
    Asked by Claire on August 11, 2022 9:52 pm
    Answered by the admin

    Grazon Extra Herbicide is approved under Permit 12942 to control Giant Devil's Fig.  It requires a tank mix of 350-500mL Grazon Extra plus 10gm Metsulfuron Methyl in 100L Water plus a suitable wetting agent or penetrant. Apply a maximum of 2 times yearly at a minimum interval of 60 days. Do not use products containing picloram and triclopyr (i.e. Grazon Extra) within 5 m of a  waterway. Ensure spray covers all foliage and stems as incomplete application will result in regrowth.

  54. Can Grazon Extra Herbicide be mixed with Fluroxypyr 200 or 2,4-D amine?  

  55. Q Can Grazon Extra Herbicide be mixed with Fluroxypyr 200 or 2,4-D amine?  
    Asked by Anonymous user on August 3, 2022 12:00 pm
    Answered by the admin

    The label for Grazon Extra Herbicide states it can be mixed with Starane (Fluroxypyr) and Statesman 720 (2,4-D) Herbicides.

  56. Will Grazon Extra Herbicide kill Cherokee Rose multi flora? What is  the best combination?

  57. Q Will Grazon Extra Herbicide kill Cherokee Rose multi flora? What is  the best combination?
    Asked by Rodney Kahla on August 3, 2022 9:18 am
    Answered by the admin

    Grazon Extra Herbicide is not registered for control of Cherokee rose multi multiflora.  Roses are broadleaf species of plants that are likely to be highly susceptible to this herbicide and the active ingredients it is made from.  Grazon Extra and a wetting agent applied to all the Cherokee Rose foliage should be sufficient to control the plant.

  58. Can Grazon Extra Herbicide be mixed with Metsulfuron-Methyl Herbicide?

  59. Q Can Grazon Extra Herbicide be mixed with Metsulfuron-Methyl Herbicide?
    Asked by Bryan Cooper on July 22, 2022 12:12 am
    Answered by the admin

    The compatibility for Grazon Extra Herbicide is available in the directions for use (page 15) on the Specialist Sales website.  It advised that Grazon Extra Herbicide is compatible with Metsufluron-Methyl.

  60. Will Grazon Extra Herbicide kill Box thorn in winter if there is good soil moisture?

  61. Q Will Grazon Extra Herbicide kill Box thorn in winter if there is good soil moisture?
    Asked by Elizabeth Mackenzie on June 15, 2022 5:31 pm
    Answered by the admin

    The recommended time to treat African Boxthorn is from August to February, when the plants are actively growing.  However, geographic areas and climatic conditions will differ, and these times may be extended.  The general rule is that if the plant is actively growing with sap flowing, you can apply the chemicals.  

  62. Will Grazon Extra Herbicide kill Cactus?

  63. Q Will Grazon Extra Herbicide kill Cactus?
    Asked by Charlie on June 9, 2022 9:56 pm
    Answered by the admin

    Grazon Extra Herbicide is not registered for the control of Cactus. There are approximately 127 genera of plants in the Catus family, so identifying the plant you want to control is essential. Quite often, plants such as prickly pear are confused with Cactus. Prickly Pear or Pear Cactus is a genus of flowering plants in the cactus family, and Grazon Extra is registered to control this plant.  

  64. Does Grazon Extra Herbicide control "Farmers friends" or known as "cobbler's pegs"?

  65. Q Does Grazon Extra Herbicide control "Farmers friends" or known as "cobbler's pegs"?
    Asked by Ross Gregory on April 21, 2022 6:46 pm
    Answered by the admin

    Grazon Extra Herbicide is not registered to have any control over Cobbler's Pegs / Farmers Friends.  Recommend products for this purpose include Fluroxypyr Herbicides (i.e. Starane Advanced), 24D Amine 625 Herbicide, Dicamba 500SL Selective Herbicide & Tordon 75D Herbicides.

  66. Does this product kill grasses (Kikuyu, couch and maybe buffalo) whilst I spray for Lantana and other broadleaf weeds?

  67. Q Does this product kill grasses (Kikuyu, couch and maybe buffalo) whilst I spray for Lantana and o...... Read more
    Asked by Ross on April 20, 2022 6:48 pm
    Answered by the admin

    Grazon Extra Herbicide is a selective herbicide that only targets certain broadleaf species.  Provided it is applied at the correct rates, it should not kill the grass.  Note that Buffalo is a broadleaf variety and is likely to be susceptible to Grazon Extra.  If the chemical is being applied by high volume hand spraying, the volume of the chemical will likely be higher than recommended.  The result may be some damage to the grass due to phytotoxicity.

    Grazon Extra Herbicide is not registered in domestic garden situations or turf.  We do not recommend it in these situations.

  68. Will Grazon Extra Herbicide work on Lantana in a concentrated form from a Phillips Splatter gun, or should I just stick to Glyphosate? Glyphosate gets a lot of bad press due to residual properties why not Grazon? 

  69. Q Will Grazon Extra Herbicide work on Lantana in a concentrated form from a Phillips Splatter gun, ...... Read more
    Asked by Tony on April 15, 2022 5:39 am
    Answered by the admin

    Grazon Extra Herbicide is registered for application with Gas Powered Guns (i.e. Splatter Guns) @ 335mL-500mL per 10L Water to control various weeds.  Unfortunately, Lantana is not one of the species listed for this application technique.  You may like to trial the application 'off-label' to see if it is adequate for your requirements.  See Table D in the 'directions for use' booklet. 

    We recommend you look at the document we have called 'Glyphosate - Facts v Myths' that might help clear up a lot of what you see and hear about Glyphosate.  You can find this in our Glyphosate listings in the SDS & Technical tab (Knockout 450 Herbicide).

  70. Can I use this to paint on the stumps of small wattle trees to stop them regrowing?

  71. Q Can I use this to paint on the stumps of small wattle trees to stop them regrowing?
    Asked by Monica Cole on April 8, 2022 11:31 am
    Answered by the admin

    Grazon Extra Herbicide is only registered for foliar spray applications.  For Cut Stump and Basal bark applications on Wattle, we recommend Access Herbicide, Garlon 600 (Triclopyr), Tordon Regrowthmaster or equivalents to Tordon DSH.

  72. Can I mix Grazon Extra Herbicide with diesel, and will it kill Mulga?

  73. Q Can I mix Grazon Extra Herbicide with diesel, and will it kill Mulga?
    Asked by Warren Gregory Manns on March 21, 2022 7:36 am
    Answered by the admin

    Grazon Extra Herbicide is formulated only to be mixed with water.  There are only a small number of herbicides compatible to be mixed with Diesel.  These include Access Herbicide, Fluroxypyr Herbicides (i.e. Starane) and Triclopyr Herbicides (Garlon 600).  Of these herbicides, only Access Herbicide has claims to control Mulga.

  74. Will Grazon Extra Herbicide kill ivy? I have lots of ground ivy covering the whole of the garden, also on large trees and fences. I want something that will kill the roots, not much else is growing in the garden.

  75. Q Will Grazon Extra Herbicide kill ivy? I have lots of ground ivy covering the whole of the garden,...... Read more
    Asked by Mel Herd on March 20, 2022 1:56 pm
    Answered by the admin

    Grazon Extra Herbicide is not registered to control Ivy.  We suggest looking at Garlon 600 Herbicide as it has claims to control English Ivy (when mixed with Glyphosate).  Research on this product is strongly recommended, and care must be undertaken as Garlon will kill trees and other woody, broadleaf species.  Do not treat Ivy growing up trees or on other plants as the host's death may result.

  76. Is Grazon extra suitable for control of sorrel (Acetosella vulgaris/ Rumex acetosella) in a pasture situation?

  77. Q Is Grazon extra suitable for control of sorrel (Acetosella vulgaris/ Rumex acetosella) in a pastu...... Read more
    Asked by Mary on February 28, 2022 12:22 pm
    Answered by the admin

    Grazon Extra does not claim to control any sorrel species.  The main chemicals recommended for sorrel control in pasture include 24D Amine, MCPA, Bromoxynil & MCPA, Bromoxynil 200, Dicamba 500, Dicamba M, Picloram & MCPA, Diflufenican + Bromoxynil & Metsulfuron Methyl.  

  78. Hi. I've got a weed the locals call possum piss. I think its proper name is Siam weed.  I also have thistle. Will Grazon Extra help with these weeds?

  79. Q Hi. I've got a weed the locals call possum piss. I think its proper name is Siam weed.  I also ha...... Read more
    Asked by John Westlake on February 27, 2022 7:41 am
    Answered by the admin

    Grazon Extra Herbicide will control Siam Weed and many thistle varieties.  A good mix for these weeds is;

    Grazon Extra Herbicide @ 35-50mL per 10L Water

    Metsulfuron Methyl Herbicide @ 1gm per 10L Water

    Consume Penetrant @ 10mL per 10L Water

  80. Can a marker dye be added to Grazon Extra Herbicide when spraying blackberries?

  81. Q Can a marker dye be added to Grazon Extra Herbicide when spraying blackberries?
    Asked by Peter on February 22, 2022 5:46 pm
    Answered by the admin

    Spray marker dyes are compatible with Grazon Extra Herbicide when spraying Blackberry so you can see which bushes have been sprayed.

  82. Will Grazon Extra herbicide kill agapanthus?

  83. Q Will Grazon Extra herbicide kill agapanthus?
    Asked by Kathy Godwin on February 18, 2022 11:57 am
    Answered by the admin

    Grazon Extra Herbicide does not claim to control or kill agapanthus.  Specialist Sales recommends Vigilant II Herbicide Gel (Picloram & Aminopyralid) for agapanthus control.

  84. Can this product be used on an acreage with an infection of mother of thousands all throughout the lawn without killing the grass?

  85. Q Can this product be used on an acreage with an infection of mother of thousands all throughout th...... Read more
    Asked by Kristi on January 31, 2022 3:51 pm
    Answered by the admin

    Grazon Extra Herbicide is not recommended or registered for domestic applications and definitely not in turf situations.  The active ingredients in Grazon Extra can cause severe damage or death to off-target species in domestic areas plus there is also residual concerns with the Aminopyralid that you would not want in a garden situation.

  86. Is there an ideal pH that maximises the efficiency of Grazon Extra Herbicide?
  87. Q Is there an ideal pH that maximises the efficiency of Grazon Extra Herbicide?
    Asked by Phillip Gely on January 20, 2022 9:09 am
    Answered by the admin

    Grazon Extra Herbicide does not have an optimum pH level for use listed on the products label.  If you are worried about the quality of the water being mixed with the Grazon Extra, you should consider the option to use an Acidifying/buffering agent.  Acidifying/buffering agents adjust the pH of alkaline or acidic water and minimise decomposition of the pesticide through alkaline hydrolysis.  We recommend the best results will be achieved with Grazon Extra when mixed with a Polyether Modified Polysiloxane Adjuvant such as Pulse, Eurochem, or Consume.  These adjuvants spread, stick and forces the chemical into the plant

  88. Will this spray kill Broad-Leaved Pepper Tree?
  89. Q Will this spray kill Broad-Leaved Pepper Tree?
    Asked by Chloe on January 6, 2022 10:42 am
    Answered by the admin Grazon Extra Herbicide does not claim to control Broad Leaved Pepper Tree.  The recommended chemicals to use are Fluroxypyr (i.e. Starane) as a foliar spray, basal bark & cut stump application.  Glyphosate can also be used with cut stump application.  We suggest reading DAF Qld's tech sheet on Broad-Leaved Pepper Tree for more details.
  90. Should Grazon Extra be used in a domestic garden where roses, vegetables etc are present? Will it kill Magnolias, citrus, May hedge etc if it diffuses and will it kill grown trees by defoliating them? Will it kill anything planted in a bare bed which has been sprayed with Grazon and what lawn grasses will it kill?
  91. Q Should Grazon Extra be used in a domestic garden where roses, vegetables etc are present? Will it...... Read more
    Asked by Sue Fairlie - Cuninghame on December 30, 2021 2:16 pm
    Answered by the admin

    Grazon Extra Herbicide is not registered or recommended for use in domestic gardens.  Grazon targets broadleaf species, so it will be lethal on plants such as roses, hedges, shrubs & trees.  The Aminopyralid & Picloram used to make Grazon Extra have residual effects.  The main herbicides that can contaminate soils and compost include Aminopyralid and Picloram, both found in Grazon Extra.  Grazon Extra is not recommended for use on any turf or lawn situations.  It will definitely kill broadleaf lawn species such as Buffalo Turf.

  92. Is this suitable to spray thistles, blackberries, briar bushes & St. John’s Wort?
  93. Q Is this suitable to spray thistles, blackberries, briar bushes & St. John’s Wort?
    Asked by Helen Howell on December 29, 2021 5:45 pm
    Answered by the admin

    Grazon Extra Herbicide is registered to control Spear Thistle, Blackberry, Sweetbriar & St John's wort.  Application rates are listed in the directions for use on the Specialist Sales website in the 'SDS and Technical' tab.

  94. Will Grazon Extra kill wandering jew (tradiscantia) if so what is the mix rate? Thanks
  95. Q Will Grazon Extra kill wandering jew (tradiscantia) if so what is the mix rate? Thanks
    Asked by michael fox on December 29, 2021 5:01 pm
    Answered by the admin

    Grazon Extra Herbicide does have any claims to control Wandering Jew and is unlikely to affect the weed.  We would recommend herbicides made from Fluroxypyr.  For example, Starane Advanced Herbicide is mixed at 9mL per 1-Litre Water.

  96. Can I mix Grazon with roundup?
  97. Q Can I mix Grazon with roundup?
    Asked by Chris Roberts on December 27, 2021 10:26 am
    Answered by the admin

    Grazon Extra Herbicide is compatible with Glyphosate 450, Metsulfuron-methyl, Roundup CT, Starane Advanced (Fluroxypyr), Statesman 720 (2,4-D) & Stinger Herbicide (Aminopyralid).

  98. How is Grazon Extra with dogs?  I have small dogs and need to know withholding as with farmer spraying it goes onto the grassed areas and as you know dogs do eat grass. Thankyou
  99. Q How is Grazon Extra with dogs?  I have small dogs and need to know withholding as with farmer spr...... Read more
    Asked by Karen mccabe on December 22, 2021 10:52 am
    Answered by the admin

    The best practice is to keep your dogs away from any sprayed areas until the spray has dried.  As dogs do not 'graze' on grass as a food source, the risk of them ingesting a toxic quantity is very low.

  100. Does Grazon control Giant Rats tail grass?
  101. Q Does Grazon control Giant Rats tail grass?
    Asked by Warren Harvey on December 19, 2021 6:44 am
    Answered by the admin

    Grazon Extra Herbicide is registered to target specific species (mainly broadleaf) without harming grasses.  Grazon Extra is unlikely to have any effect on controlling Rat's Tail Grass.  Rat's Tail Grass is usually sprayed with Flupropanate or Glyphosate Herbicides.

  102. Is this safe to spray while horses are still grazing or do they have to be locked up for an amount of time?
  103. Q Is this safe to spray while horses are still grazing or do they have to be locked up for an amoun...... Read more
    Asked by Mariola Nelson on October 1, 2021 9:57 am
    Answered by the admin

    Although not stated on the products label, removing horses while you are spraying is considered best practice.  The reentry period is usually long enough for the chemical to dry and be translocated through the plant.  24-hours would be more than adequate.

    You do need to be aware of any plants that may become poisonous once sprayed.  Poisonous plants may become more palatable after spraying and stock should be kept away from these
    plants until they have died down.  Many plants remain poisonous after death, and stock
    should not be allowed access, as there is a likelihood that they may graze the dead material. Such material should be burnt if possible.

    The Withholding Periods for Grazon Extra are only applicable for livestock destined for slaughter or export markets.

Send me a notification for each new answer.

Disclaimer: This information and product advice is not intended to be advice or recommendations for any specific use or circumstance. You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.

Host & Pest

Host Pest
Host & Pest
Agricultural Non-crop Areas, Commercial/industrial Land, Forest, Pasture & Rights Of Way African Boxthorn, Angophora, Australian Or Native Blackthorn, Banksia, Blackberry In Assoc With Other Weed (see, Blue Heliotrope Or Blue Top, Camphor Laurel, Cape Or Montpellier Broom, Capeweed, Casuarina Or Sheoak, Chilean Cestrum, Chinee Apple, Chinese Scrub, Cockspur Thorn, Common Prickly Pear, Common Sensitive Plant, Common Sida, Crofton Weed, Eastern Cotton Bush, English Broom, Eucalyptus, Fireweed, Flax Leaf Broom, Furze Or Gorse, Galenia, Giant Bramble, Groundsel Bush, Hawthorn - Less Than 2 M Tall, Horehound, Japanese Sunflower, Lantana - Lantana Camara, Lantana - Lantana Montevidensis, Limebush, Lion Tail, Manuka, Mesquite, Mesquite - Prosopis Velutina, Milfoil Or Yarrow, Mistflower Or Creeping Crofton Weed, Mother-of-millions, Parkinsonia, Paterson's Curse, Rubber Vine - Not Infected With Rust, Siam Weed, Sickle Pod, Smooth Tree Or Drooping Prickly Pear, Spear Or Black Thistle, St John's Wort, Sweet Briar Or Wild Rose, Tobacco Weed, Wattle - Except Corkwood Wattle, Wild Rosemary, Wild Tobacco Tree
Fallow Land Bitter Bark Or Quinine Tree, Blackberry Nightshade - Suppression, Camel Or Afghan Melon, Cowvine, Cucumber Melon, Lucerne - Established, Paddy Melon, Polymeria, Sow Or Milk Thistle

Tips For Use

Equipment Required for Application:

Depending on the Size of the Job at Hand:

  • Large dense infestations (for example, large, old dense blackberry stands) are best treated with a large motorised pump and handgun unit. This equipment can often be hired or a contract spray applicator can be engaged.
  • However, a suitable knapsack or hand pump spray unit will suffice in many situations, provided that good coverage can be achieved (to the point of run-off).
  • Ideally use a spray unit that is dedicated for application of herbicides only (to avoid cross contamination).
  • Measuring jug.
  • Cotton overalls or long-sleeved shirt and long pants.
  • Washable hat.
  • Elbow-length PVC gloves.
  • Safety glasses or face shield.

Correct Mixing Procedure:

  • If possible, mix Grazon Extra with clean water sourced from town supply or a rainwater tank, although any source of clean water may be used. Avoid using water that is particularly ‘hard’ or strongly alkaline as that may reduce herbicide efficacy. Half fill the spray tank with water then add the Grazon Extra before adding the remainder of the water. If the product label requires the addition of a spray oil, penetrant or wetting agent to assist in control your particular weed population, mix in once the spray tank is full. 
  • Once mixed, the spray solution should ideally be kept agitated and used immediately. However, if circumstances conspire to interrupt spraying, a mixture of Grazon Extra and water can be stored for up to seven days, provided that it is intermittently agitated each day, and well agitated again before use.

Application Timing for Best Results:

  • In general, smaller weeds are easier to control than large ones. 
  • Grazon Extra is most effective when applied to weeds that are not stressed due to lack of moisture, excessive heat, insect or pathogen (such as rust) damage, etc. and are actively growing. Actively growing weeds will draw the chemical into the vascular system and transport it through the stems and down to the roots to ensure maximum efficacy.
  • Grazon Extra needs to penetrate into the leaves of treated weeds before any rainfall occurs so do not make applications if rain is possible before the spray is completely dry – usually one hour. Similarly, avoid application if the leaves are wet from rainfall or dew.
  • Once the weeds have been sprayed leave them undisturbed so that the chemical is able to move throughout the leaves, stems and roots and provide complete kill. Disturbing the weeds by slashing, burning, mulching, etc. before the chemical is fully distributed will compromise the control achieved. We recommend that blackberries and other woody weeds not be disturbed for six months after spraying to maximise the performance of Grazon Extra.

First Aid:

  • If poisoning occurs contact a doctor or Poisons Information Centre. Phone Australia 131 126.
  • For further information, refer to the Safety Data Sheet (SDS).

Woody Weeds – Getting started with Grazon Extra herbicide


Spot Spraying with Grazon Extra


Spot spraying Tiger Pear with Grazon Extra

Withholding Period

Withholding Period Details (WHP):

  • Pasture: Cutting or grazing pastures for stock food: Not required when used as directed.
  • Livestock destined for export markets: The grazing withholding period only applies to stock slaughtered for the domestic market. Some export markets apply different standards. To meet these standards, ensure that in addition to complying with the grazing withholding period, the export slaughter interval is observed before stock are sold or slaughtered.
  • Export Slaughter Interval (ESI) – 3 days
  • Livestock that has been grazed on or fed treated crops within 42 days of application should be placed on clean feed for 3 days prior to slaughter.
  • Export Grazing Interval (EGI) – 42 days:
  • Livestock that has been grazing on treated crops or pasture should not be sold for export slaughter for 42 days (6 weeks) after application of chemical product, unless the export slaughter interval has been observed. When grazon extra is used as directed and the above withholding periods and/or export intervals are observed, treated grain and livestock commodities are considered acceptable for export. However, export requirements are subject to change. Consult your exporter for updated information about specific market requirements

SDS & Technical

Grazon Extra Herbicide Label (Text) Download Pdf
Grazon Extra Herbicide Label Download Pdf
Grazon Extra Herbicide SDS Download Pdf

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