Herbicides

Herbicides and Weed Killers for Lawns, Gardens and Farms

From bindii in the lawn to blackberry on the fence line, the right herbicide makes weed control faster, cheaper and safer for the plants you want to keep. Our range covers selective lawn weed killers, glyphosate, path weeders, woody weed and stump killers, and organic options.

We stock trusted brands including Roundup, Yates, David Grays, SureFire, Amgrow, Brunnings, Naadco and Slasher, in sizes from ready-to-use sprays to 20L drums. Order online with delivery across Australia for eligible products, or collect free from our store.

Selective or Non-Selective: Choosing a Weed Killer

Selective herbicides kill certain weeds while leaving your lawn grass unharmed, so they're the choice for weeds growing in turf. Non-selective herbicides such as glyphosate kill almost any green plant they touch, making them ideal for paths, fence lines and clearing ground before planting.

Always check which lawn types a product is safe on. Some lawn weed killers that work well on couch and kikuyu will damage buffalo grass.

Bindii, Clover and Broadleaf Lawn Weed Killers

David Grays Dart Bindii & Clover Herbicide controls bindii, clover, capeweed, creeping oxalis, cudweed and flatweeds. It suits buffalo, couch and kikuyu lawns when used as directed. Spray in late autumn or winter while weeds are young, before bindii sets its prickly seeds.

For couch and kikuyu lawns, sports fields and larger areas, SureFire Dicamba M combines MCPA and dicamba to control a long list of broadleaf weeds, including dandelion, thistles and clover. It isn't suitable for buffalo lawns. Other options include Brunnings Bindii & Clover Kill, David Grays Crab Grass & Clover Killer, and Brunnings Feed n Weed, which fertilises and weeds in one step.

Winter Grass Killers

Winter grass (Poa annua) appears in the cooler months and quickly spreads its seed heads through lawns. David Grays Blockade H Winter Grass Killer contains propyzamide, which controls germinating and established winter grass in couch and buffalo lawns. Apply it in late autumn to winter, before seed heads form, and water it in well.

Don't use Blockade H on kikuyu, ryegrass, fescue or bent lawns. Amgrow Winter Grass Killer is another option for smaller lawns.

Glyphosate and Total Weed Control

Glyphosate is a Group 9 systemic herbicide that moves from the leaves down to the roots, killing annual and perennial weeds and grasses. It has no soil residual, so treated areas can usually be replanted once the weeds have died. Check the label for exact timing.

SureFire Glyphosate 360 is a great-value 1L concentrate for home gardens. Roundup, Brunnings Weed Kill and Yates Zero are trusted alternatives, including ready-to-use packs. For farms and large properties, choose Glyphosate 450 or Roundup UltraMAX in 20L drums.

Path and Driveway Weed Control

On paths, driveways and paved areas, a residual weed killer saves you spraying every few weeks. Yates Path Weeder combines glyphosate with residual herbicides that stop most new weeds germinating for up to 12 months, and Roundup Path is a handy ready-to-use option. Never use residual products in garden beds or lawns, or near the roots of trees and shrubs.

Blackberry, Woody Weed and Stump Killers

Woody weeds and regrowth from cut stumps need stronger herbicides that move through the whole plant. SureFire Treeson combines triclopyr and picloram to control blackberry, gorse and unwanted trees, applied as a foliar spray, to cut stumps or by stem injection. David Grays Blackberry & Tree Killer suits smaller home jobs, and SureFire Metsulfuron is a low-rate option for blackberry and broadleaf weeds in pastures and non-crop areas.

Woody weeds can take weeks or months to die completely, so give them time before re-treating. Keep these products well away from the roots of trees you want to keep.

Organic and Fast-Acting Weed Killers

Slasher Organic Weed Killer is made from plant-based fatty acids. It burns down weeds within hours and leaves no soil residual. It's ideal for organic gardens and quick results, in a 1L ready-to-use pack for spot spraying or a concentrate for larger areas.

Commercial Herbicides

For farms and contractors, we also stock paraquat knockdown herbicides, including Naadco Paraquat 250 and Kendon Sprayquat 250. These are restricted products for trained, licensed users only. Always work from the current label and your state's requirements.

Which Weed Killer Do You Need?

• Bindii and clover in buffalo lawns: David Grays Dart
• Broadleaf weeds in couch and kikuyu: SureFire Dicamba M
• Winter grass in couch or buffalo: Blockade H
• Clearing garden beds, fence lines and new ground: Glyphosate 360 or 450
• Long-lasting control on paths and driveways: Yates Path Weeder
• Blackberry, woody weeds and stumps: SureFire Treeson
• Organic gardens and fast results: Slasher

Tips for Spraying Herbicides

Spray on a calm, dry day when weeds are actively growing, and avoid rain for several hours afterwards. A good garden sprayer with a low-pressure nozzle gives even coverage and reduces drift onto plants you want to keep. Keep a separate sprayer just for herbicides.

After weeding the lawn, feed it with a quality lawn fertiliser so the grass fills in bare patches before new weeds move in. In garden beds, a thick layer of garden mulch blocks light and stops most weed seeds germinating.

Australia-Wide Delivery on Herbicides

Bonnyrigg Produce & Garden Supplies is a produce, garden and pet supply store delivering to customers right across Australia. Order your herbicides and weed killers online and we'll ship them to you for eligible products, with most in-stock orders dispatched within one business day.

Prefer to collect? Choose free in-store pick-up at our Sydney store, 462 Elizabeth Dr, Bonnyrigg NSW 2177. We're open Monday to Friday 8:00am to 5:30pm, and Saturday and Sunday 8:00am to 5:00pm.

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