Certified Organic · Made in Australia

The Best Organic Weed Killer for Garden Weed Control

Pet safe, glyphosate-free and fast-acting — the healthier way to spray, made from sustainably sourced pine oil.

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Why Choose Bioweed

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Natural Pine Oil

Made from natural, sustainably sourced, hand-tapped pine oil — certified organic input and glyphosate-free.

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Peace of Mind

No withholding periods — safe for animals and people to use the area as soon as it’s dry.

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Works Fast

Fast-acting on most weeds and grasses — ideal for gardens, paths, driveways and lawn spot-spraying.

Make the Right Choice for Your Family and Home

With growing concern around glyphosate-based products, more gardeners are looking for natural weed control — but results with other “natural” options can vary. Bioweed is a non-selective weed killer that works fast on contact, rapidly desiccating and burning weeds.

Use it anywhere around the house — garden beds, veggie patches, paths and driveways. With no withholding periods, the area is safe for animals and people to use as soon as it’s dry.

Bioweed is Australian owned and made, backed by over 20 years of research and development, using only premium, sustainably sourced, hand-tapped pine oil as its active ingredient. Spray liberally onto weeds to the point of run-off and you’ll see them wilt and discolour within minutes.

Bioweed Ready to Use — Key Features

  • Visible symptoms on some weed species within hours
  • Organic certification — approved for organic gardening
  • No withholding period — safe for animals and people once dry
  • Controls a wide range of common weeds and grasses
  • Non-residual — breaks down in soil within 72 hours
  • Kills weeds and suppresses their seeds
  • Safe around homes, businesses, vegetables and gardens
  • 100% synthetic-chemical-free and glyphosate-free
  • Owned and made in Australia

What Our Customers Say

“I have an ongoing problem with onion weed and oxalis in my small urban garden. Bioweed allows me to selectively weed safely without upsetting other plants. It has a pleasant pine smell and best of all, it’s a natural product without any nasties.”

Caroline Williams · Google

“It works within two days and is very effective on all weeds. I have only had it for about 10 days and am very pleased with it.”

Maurie Thiele · Google

“Very good results particularly on kikuyu, which I consider a pest that invades our garden from next door. Within 15 minutes on a dry day you can see ground cover weeds collapsing.”

Gilbert Charbonnier · Google

Sustainably Sourced, for Sustainable Results

It’s time to take a more sustainable approach. Bioweed is formulated with a non-toxic ingredient — 100% sustainably farmed pine, hand-tapped and managed by indigenous stewards, providing income and support for their local community.

Replacing petrochemical herbicides with Bioweed helps improve soil health and reduce soil residue issues over time.

Kills Weeds and Suppresses Seeds

Bioweed doesn’t just kill the weed — it also suppresses the seeds it comes into contact with, meaning fewer applications and less waiting time for a weed-free garden.

Replacing petrochemical herbicides with Bioweed begins improving your soil health straight away and helps alleviate soil residue issues.

Why Choose Natural Solutions?

While many weed killers rely on synthetic chemicals including glyphosate, Bioweed is made from 100% natural, hand-tapped pine oil as its active ingredient — a sustainable weed control solution. With no withholding period, it’s safe for animals and people to use the area as soon as it’s dry. Bioweed is ACO-approved for use around organic farms and organic food production.

Commercial Strength

Bioweed has been used for years by councils and organic farms, and is now available for fast-acting, effective and safe weed control at home. Easy to use and safe on the environment, it decreases weed populations by killing the weed and suppressing the seed — the perfect partner in the fight against invasive weeds.

Seed Suppression Explained

For every weed pulled or killed with most weed killers, millions of seeds are still left behind in the ground — so new weeds keep popping up.

While Bioweed isn’t a pre-emergent herbicide, it has pre-emergent qualities: on contact with a seed, it dries out the epidermis or coating, causing the seed to crack prematurely and dry out the embryo.

So Bioweed doesn’t just kill the weed — it also lowers the seed count in the ground, meaning fewer applications and less waiting time for a perfect weed-free garden.

Popular Questions

How does it work?
Bioweed is not a systemic herbicide — it works by stripping the outer coating of the contacted plant and seed material, causing cell collapse and desiccation. The plant’s natural water cycle then pulls water and energy out of the root system, dehydrating its growth system.
How does the seed control work?
Direct contact with seed on the weed or in/on the soil de-natures the seed coat, leading to desiccation of the seed embryo and making the seed inviable.
What weeds will it control?
Bioweed controls a large range of herbaceous and grass-type weeds, and their seed. It will not control woody weeds such as lantana and devil’s fig, since it works on the waxy cuticle of the leaf rather than the lignin (trunk). For a full list, see the Help & Advice page.
How do I use Bioweed?
Shake before use, fully cover the target weed to the point of run-off, apply on a sunny day, and avoid use if rain is forecast in the next two hours. Mix rate ranges from 10% for small or emerging weeds up to 20% for mature and stubborn weeds — we recommend testing between 10–15% to find the best efficacy for your target weeds.
Is there any danger of off-target plant damage?
Off-target damage is very low. Because Bioweed is not systemic, it will not damage tree root systems or trunks, making it well suited to weed control around new plantings and valuable plants.
What is the shelf life?
Depending on storage, Bioweed is registered to have a shelf life of 2 years (see product label).
Will it kill grass?
Bioweed controls most types of grasses, though full coverage is needed for full control since it isn’t a conventional herbicide. It can achieve a fine edge for lawn edging without retracting back into the lawn area. Mature grasses with runners will need a follow-up treatment in 4–7 days.
Is it safe for pets and animals?
With no withholding periods, Bioweed is safe for pets and animals to use the area immediately once it’s dry — this also gives the product maximum time on the leaf surface for best results.
Will it need a follow-up to achieve a full kill?
If the application manual and label are followed, Bioweed will achieve a full kill of targeted plants. Mature weeds may need slashing or brush-cutting before treatment, and could require a follow-up application.
Is it safe around bees?
With no withholding periods, Bioweed is safe for animals immediately once the treated area is dry.
Will it control nutgrass?
Bioweed will control nutgrass, though several treatments are needed since each plant can have multiple nuts or seeds beneath it. Follow-up treatments help control both the plant and the seed it produces, stopping future germination. Full coverage to the point of run-off is important, with best results seen when applied on a hot, sunny morning.
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