What Are the Best Weed Killers That Are Safe for Grass?

Request a Callback

Get one of our team members to give you a call to discuss your project!

Farmer in white protective costume spraying vegetable in the garden with herbicides, pesticides or insecticides.

Weeds are one of the most common frustrations for Australian homeowners. They spread fast, compete with your grass for water and nutrients, and can quickly make an otherwise healthy lawn look neglected.

The problem is, not every weed killer is safe to use on turf. Grab the wrong product, or apply the right one incorrectly, and you can end up doing more damage to your lawn than the weeds ever did.

So what actually works? Let’s break down the safest, most effective weed control options for Australian lawns, and how to use them properly.

Why Not All Weed Killers Are Safe for Lawns

Herbicides fall into two broad categories, and understanding the difference is the key to protecting your grass.

  • Non-selective herbicides kill everything they touch, weeds and grass alike. These are designed for driveways, garden beds, or spot treatment, not for use across a lawn.
  • Selective herbicides are formulated to target specific weed types, such as broadleaf weeds, while leaving turfgrass unharmed.

Using a non-selective product across your whole lawn is one of the fastest ways to end up with bare, dead patches that need to be reseeded or re-turfed entirely. Choosing the right selective herbicide for your weed type and turf variety is essential.

Understanding Your Weed Type

Before choosing a weed killer, it helps to know what you’re dealing with. Weeds generally fall into a few categories:

  • Broadleaf weeds: Clover, bindii, dandelion, and similar weeds with wide, flat leaves
  • Grassy weeds: Winter grass, crabgrass, and other grass-like weeds that blend in with your turf
  • Sedges: Nutgrass and similar weeds with a triangular stem, often found in damp areas

Different herbicides target different weed categories, so correctly identifying your weed is the first step toward choosing an effective, lawn-safe treatment.

A View Turf Can Help
Leave the hard work to the experts and contact us online or call today 1800 799 222

Best Weed Killer Options for Grass

1. Selective Broadleaf Herbicides

These are formulated specifically to kill common broadleaf weeds like bindii, clover, and dandelion, without harming most common turf varieties.

Best for: Buffalo, couch, and Kikuyu lawns dealing with broadleaf weeds

Tips for use:

  • Always check the product is labelled safe for your specific turf variety, as some buffalo grasses are more sensitive than others
  • Apply during active weed growth, typically spring or autumn
  • Avoid mowing immediately before or after application, as this can reduce effectiveness

2. Bindii and Clover-Specific Treatments

Bindii is one of the most disliked lawn weeds in Australia, mainly because of the painful prickles it leaves behind once it seeds. Targeted bindii and clover treatments are formulated to deal with this weed specifically while remaining safe for turf.

Best for: Lawns with a significant bindii or clover problem

Tips for use:

  • Apply in the cooler months before bindii sets seed, ideally winter to early spring
  • Water the lawn a day or two before application for best results
  • Avoid treating a heat-stressed or drought-affected lawn, as this increases the risk of turf damage

3. Selective Grassy Weed Herbicides

Grassy weeds like winter grass and crabgrass can be tricky, since they resemble your turf. Selective grassy weed herbicides are designed to target these weeds without harming your main lawn variety.

Best for: Lawns with winter grass or crabgrass intrusion

Tips for use:

  • These products are often more turf-specific than broadleaf herbicides, so double-check compatibility with your grass type
  • Timing is critical. Many grassy weed treatments work best when applied before the weed germinates
  • Avoid overuse, as some grassy weed treatments can stress turf if applied too frequently

4. Nutgrass and Sedge Treatments

Nutgrass is notoriously difficult to control because of its underground tuber system, which allows it to regrow even after the visible plant is removed.

Best for: Lawns dealing with nutgrass or other sedge weeds

Tips for use:

  • Look for a herbicide specifically labelled for nutgrass or sedge control
  • Multiple applications are often required, as nutgrass regrows from tubers below the soil
  • Be patient. Nutgrass control is a longer process than most other weed treatments

5. Spot Treatment with Non-Selective Herbicides

For isolated weeds in garden beds, paths, or driveways, a non-selective herbicide can be used, but never across the lawn itself.

Best for: Weeds outside the lawn area, or very isolated spot treatment with a shielded applicator

Tips for use:

  • Apply carefully with a shield or targeted applicator to avoid overspray onto turf
  • Avoid use on windy days, as drift can easily damage nearby grass
  • Only use this method for small, isolated weeds well away from healthy lawn
Hand Farmer spraying pesticides or fertilizers for agriculture
Need a Hand With Your Grass?

Get one of our team members to contact you and discuss your options!

Tips for Using Weed Killer Safely on Your Lawn

  • Read the label carefully. Not all selective herbicides are safe for every turf variety. Always check compatibility before applying.
  • Time your application. Most weed killers work best during active weed growth, and applying at the wrong time of year reduces effectiveness.
  • Avoid mowing too close to treatment. Mowing immediately before or after application can interfere with how well the herbicide is absorbed.
  • Don’t treat a stressed lawn. Applying herbicide to a drought-stressed or heat-affected lawn increases the risk of turf damage.
  • Water appropriately. Some herbicides need dry conditions to work effectively, while others benefit from watering beforehand. Always follow label directions.

Natural and Low-Chemical Alternatives

If you’re looking to minimise chemical use, there are some natural approaches worth considering, particularly for smaller weed problems:

  • Hand removal for isolated weeds, particularly effective for weeds like bindii before they set seed
  • Maintaining a dense, healthy lawn, which naturally crowds out weeds by limiting the space and light available for them to establish
  • Correct mowing height, as cutting too short can open up space for weeds to take hold

While these methods won’t eliminate an established weed problem on their own, they’re excellent tools for prevention and for keeping smaller issues under control.

When to Call in the Professionals

If your lawn has a significant or persistent weed problem, particularly with nutgrass or grassy weeds, it may be worth getting professional advice rather than working through trial and error with different products.

A turf specialist can accurately identify your weed type, recommend a herbicide safe for your specific grass variety, and help you develop a long-term plan to prevent weeds from returning.

Frequently Asked Questions

When you use a selective herbicide that’s compatible with your turf variety and follow label directions, the risk of damage is low. Problems usually occur from using the wrong product, applying during heat stress, or overusing the treatment.

This varies by product, but most labels recommend waiting a few days before and after application. Always check the specific product instructions.

Not usually. Broadleaf, grassy, and sedge weeds often require different herbicides, so correctly identifying your weed type is important before choosing a product.

Most products require the treated area to dry completely before pets or children walk on it, generally a few hours. Always check the specific product label for exact timing.

This can happen with weeds like nutgrass that regrow from underground tubers, or if the herbicide wasn’t matched correctly to the weed type. Multiple applications and correct product selection usually resolve this over time.

Both can be effective when matched correctly to your turf and weed type. Liquid herbicides generally offer faster, more targeted results for active weeds, while granular products are often easier to apply evenly across larger areas and can double as a preventative treatment.

Get an Expert Advice Today!

Choosing the right weed treatment for your specific turf variety makes all the difference between a weed-free lawn and one with unwanted bare patches. If you’re not sure where to start, the team at A View Turf can help you find the safest, most effective approach for your lawn.

Get in touch with A View Turf today for expert advice and a free, no-obligation quote.

Call us: 1800 799 222

Email: sale@avt.com.au

Visit: Ebenezer Wharf Road, Wilberforce NSW 2756

Get in Touch Today

Share:

Facebook
Twitter
Pinterest
LinkedIn

Get a Quick Quote