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Slasher Organic Weedkiller Concentrate

Original price $34.58
Original price $34.58 - Original price $50.75
Original price $34.58
Current price $31.44
$31.44 - $46.13
Current price $31.44
Size: 500ml
in stock, ready to be shipped
Only 11 left!
Shipping Info

Shipping is charged at cost and ranges from $6.95 to $22.00 depending on the weight of your order.

Most orders are between $6.95 and $9.95.

Click the Shipping Calculator on the shopping cart page to get an accurate price.

Need it urgently? Call us and we can try for express post.
1800 222 800

Returns Policy

All products in the Aussie Gardener Store carry a

✅30 day

✅100% Satisfaction

✅Money Back Guarantee.

We get very few returns because we only sell products that don't disappoint and we provide the after sales service to make sure you have a great customer experience.

Call us anytime for assistance 1800 222 800

Where are you?

The Aussie Gardener Warehouse is in Galston. (North West Sydney). We ship hundreds of orders all over Australia every day.

If you are a local to the area you are welcome to pickup your order from the warehouse. Call us at 1800 222 800 and let us know you'd like to pick your order up.

Slasher Weedkiller is a Registered Organic herbicide that is glyphosate-free and rapidly kills weeds, moss, algae and lichen.  Use it in gardens, paths, drive-ways, around buildings and as a spot spray in lawns. It works quickly to easily control weeds the organic way!

Slasher Weedkiller is a non-selective contact weedkiller.  Thorough coverage is needed when spraying because any parts you miss won’t be killed.  Take care when spraying around your favourite plants as any spray drift will also damage them.  Do not apply to wet weeds or if rain is imminent as the extra moisture will dilute the spray and weaken its impact.


  • Kills weeds, moss, algae and lichen on contact
  • Rapid action, desiccating plants within hours
  • Doesn’t require heat or sunlight to work
  • Can be used anywhere in the garden and around the house
  • Active ingredient made from plant oils (GM free)
  • No lasting spray residues (100% biodegradable within a few days)
  • Does not contain glyphosate
  • Registered Organic for use in organic farms and gardens
NOTE: Do not spray on porous surfaces without spot testing first. Slasher Weedkiller may cause discolouration on porous hard surfaces like pavers and bricks.

Aussie Gardener Tip : Slasher works well on smaller weeds and may require repeat treatments on large weeds. It works differently to glyphosate. 
Slasher is organic but it is a corrosive acid so take GREAT CARE when mixing and spraying. It is corrosive on skin and can cause permanent damage to eyes. 
Wear full protective gear and treat it seriously. 

The dilution rate for the concentrate is 70ml per litre of water and can be found on the back of the bottle. Simply peel off the top layer to reveal a second layer underneath which contains the dilution rate and instructions. Peel from the top right hand corner where it says “Peel Here”.

If you can’t see a second layer underneath it means you’ve accidently peeled back both layers instead of just the top layer.

If you have trouble separating the layers there’s a copy of the second label layer shown below. Alternatively you can download the entire product label from the Product Brochure & Label - See product images

For more information about slasher CLICK HERE  to visit the manufacturers webpage.
Customer Reviews
4.7 Based on 6 reviews
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I recommend this product

Slasher - perfect for big and small areas

Have been looking for a glyphosate-free **** killer for years, Slasher is perfect! In the Brisbane floods pest and noxious seeds washed through our gardens & burst into growth. From thousands of tiny eruptions, weeds everywhere, to much larger infestations, within hours the effects were obvious. Dead weeds, happy gardener, love it, love it!

Cathy Mia-Widdon
Murrumba Downs, Queensland Murrumba Downs, Queensland
I recommend this product

Truly Fantastic

Weeds dead within an hour. Like magic. Best stuff ever produced.

Narelle Hughes
Lake Haven, New South Wales Lake Haven, New South Wales
I recommend this product

Slasher Organic Weedkiller

I use Slasher on weeds in my rose garden and it works well and doesn’t affect the roses and is not residual in the soil.

Junice Pronk
Blacktown, New South Wales Blacktown, New South Wales
I recommend this product

Great stuff

This works really fast. I recommend it for sure.

Narelle Hughes
Lake Haven, New South Wales Lake Haven, New South Wales
I recommend this product


Good. but expensive

Robert Warren
Nerang, Queensland Nerang, Queensland
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Orders Shipped same day or the next from our Galston Warehouse

(NW Sydney)

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