Rural grassfires

6 min read

Grassfires can start anywhere and spread quickly. They can be extremely hot, fast moving and dangerous—people die in grassfires. Keep grass on your property short, create fuel breaks and take care when using farm equipment on warm days. On this page, learn what makes grassfires so dangerous and how to lower your risk.

Summary

  • Dry, brown, crunchy grass creates a high risk of grassfires.
  • Grassfires create huge amounts of radiant heat.
  • Grassfires can reach speeds up to 25 kilometres per hour.
  • Keep grass short around your property and assets.
  • Don't drive on grass on hot days, it can start a fire.
  • Don't get out of your car if you become trapped by a grassfire.

Grassfires can be deadly

Aerial view of a grassfire spreading across a landscape and down a hillside toward property and homes, with smoke rising and flames. Some properties have hay bails.
A grassfire spreading towards property and homes. Mt Buninyong bushfire 5th March 2025. Image credit: Wayne Riggs

Don't underestimate the risk of grassfires, especially on hot, dry, windy days. They can move extremely quickly, threatening lives and property in minutes.

Radiant heat produced by grassfires is extremely dangerous to humans, livestock and other animals.

Many lives and properties were lost on Black Saturday in grassfires around the Healesville, Yarra Glen and Steels Creek areas.

Grassfires can happen anywhere

Where there is dry, brown, crunchy grass, there is a high risk of grassfires.

Grassfires can start in farmland, paddocks, or on the side of the road.

The risk of grassfires increases as grass grows over spring and then dries out over the hotter months.

What you can expect in a rural grassfire

During rural grassfires:

  • dry, brown grass fuels the fire
  • grass taller than 10 centimetres produces big flames and intense radiant heat
  • the fire burns faster than bushfire because grass is a finer fuel and is more open to the effects of wind
  • the fire can travel up to 25 kilometres per hour—faster than you can run.

Grassfires can start early in the day. They can start in grass and spread quickly, putting you and your property at risk if you aren't prepared

The safest place to be is away from the fire. Radiant heat from a grassfire can kill you. The further away from a fire you are, the less heat can reach you.

Make a fire plan for your farm

Make and regularly update your farm fire plan. Include equipment maintenance, annual and year-round property preparation and what to do on days of high fire risk.

You will feel more prepared and it could save your livelihood, your community and your family.

Protect yourself and your property

If you live in a rural area, you need to prepare your property to reduce the risk of grassfires. Watch the video below to learn how.

Keep grass short around your home and other assets

A red tractor slashing a grassy field with a rotary cutter attachment, leaving a path of cut grass behind it.
Plough, slash or spray around your property to reduce the risk of grassfires.

Before the fire season, slash, mow, graze, and spray grass around the buildings and assets you want to protect.

Shorter grass means less fuel for the fire in those areas.

If you're a landholder or farmer, this should be part of your property preparations every year.

Create fire breaks

Narrow fire breaks of 3 to 5 metres can help slow grassfires down.

Farmers should consider a 10 metre-wide perimeter fuel break around their property and smaller fuel breaks strategically located within their property.

Farm machinery and vehicles can start grassfires

Hot engines and equipment can start a fire in seconds.

Even pulling your vehicle over on the side of the road could start a serious grassfire, like in the video below.

Farm machinery and vehicles can start fires due to their extremely hot exhaust systems.

  • Be very careful when harvesting, grinding, welding, slashing, mowing or bee smoking on hot, dry days.
  • Don't drive vehicles, quad bikes or motorbikes through dry grass or crops.
  • Keep your machinery and vehicles well maintained.
  • Keep spark arrestors maintained.
  • Know what you can and can't do during the Fire Danger Period and on Total Fire Ban days.

Learn more about using machinery and vehicles safely.

Resources

 

Page last updated: Monday, 14 September 2026 7:26:23 PM

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