If you're sick of battling weeds across your paddock, driveway, or backyard, you're not alone. Weeds can pop up almost anywhere—and without the right equipment, it can feel like an endless game of whack-a-mole. That’s where a good weed sprayer comes in. Whether you’re managing a small garden or acres of farmland, there’s a sprayer out there designed to make your life a whole lot easier. From battery-powered weed sprayers to trailer-mounted boom sprayers, this guide covers everything you need to know before choosing the right unit.
1. What Is a Weed Sprayer?
A weed sprayer is a garden or farm tool used to apply herbicide to unwanted plants. Sprayers can range from small handheld units to large trailer-mounted systems designed to cover multiple hectares. They’re especially useful for targeting large infestations quickly and evenly.
Key components usually include:
- Tank – Holds the herbicide or weed-killing solution.
- Pump – Pressurises the liquid.
- Nozzle/Boom – Distributes the spray.
- Power Source – Could be manual, battery-powered, or connected to a 12V system.
2. Battery Powered Weed Sprayers: Portable and Practical
If you're dealing with medium-sized areas, a weed sprayer battery powered unit is a great choice. These are usually backpack or trolley-style sprayers powered by a rechargeable lithium battery.
Benefits:
- Easy to manoeuvre.
- No manual pumping.
- Quiet operation.
- Ideal for gardens, fence lines, and around sheds.
Popular sizes:
- 15L to 20L
- Runtime of 2–4 hours on a full charge
Example use case: Treating weeds along paths and in tight garden beds where trailers won’t fit.
3. 12V Weed Sprayers: A Favourite for ATVs and Utes
A weed sprayer 12 volt model is powered via a 12V battery, often connected to an ATV, quad bike, or the back of a ute. If you’ve got a bit more ground to cover but don’t need a full-size trailer, this option offers a great balance between capacity and mobility.
Perfect for:
- Spot spraying in paddocks
- Treating fence lines
- Small farms or lifestyle blocks
Features to look for:
- 50L–100L tank capacity
- Durable UV-stabilised tanks
- High-pressure pumps (up to 100psi)
Popular add-ons include a weed sprayer boom kit or hand-held spray wand for spot spraying.
4. ATV Weed Sprayers: Built for Speed and Terrain
If you already use an ATV or quad bike on your property, a weed sprayer for quad bike or ATV weed sprayer is a no-brainer. These units mount directly to your vehicle, making them super easy to control and reposition on uneven ground.
ATV sprayers often come in:
- 50L, 80L, or 100L weed sprayer capacities
- Boom options for broad coverage
- 12V-powered motors
They’re ideal for rough terrain, bushland, and long fence lines. Add a weed sprayer boom and you can turn your quad into a serious weed-busting machine.
5. Trailer Mounted Weed Sprayers: For Serious Weed Control
When you’re dealing with large acreage, a weed sprayer trailer or trailer mounted weed sprayer becomes essential. These heavy-duty units are designed to be towed behind a tractor, ATV, or ute and are perfect for spraying big open areas.
Top features:
- Large tanks (100L to 300L or more)
- Sturdy steel frames
- Wide spray booms (up to 3m+)
- High-pressure 12V or petrol pumps
If you're browsing weed sprayers for large areas, trailer models are the way to go. They're also handy when you want to minimise refills and get the job done faster.
Look out for:
- Weed sprayer with trailer options for a complete setup
- Tow behind weed sprayer models that suit quad bikes or tractors
6. Weed Sprayer Trolleys and Kits: Compact and Convenient
Need something smaller and more mobile? A weed sprayer trolley or weed sprayer kit is great for home gardens and small properties. These units come pre-assembled or in easy-to-install kits that include everything you need: tank, pump, hose, and nozzle.
Great for:
- Homeowners
- Gardeners
- Schools and parks
They usually come in:
- 20L to 50L sizes
- Manual, battery or 12V-powered versions
They’re simple, cost-effective, and easy to store. Perfect for weekend warriors who want a no-fuss solution.
7. Weed Sprayer Tanks and Pumps: Build Your Own Setup
Already have a trailer or frame? Then buying a weed sprayer tank and pump separately might be your best option. This gives you more flexibility to build a custom spraying rig based on your specific needs.
Available components include:
- Poly tanks from 50L to 1000L+
- 12V diaphragm pumps or petrol-powered options
- Hose reels and boom arms
You can also upgrade your existing gear with a weed sprayer boom kit for wider coverage or swap in a higher-pressure pump for better reach.
8. Weed Spray Units for Sale: What to Look For
When browsing weed sprayer for sale or weed spray units for sale online, make sure to consider:
- Tank size: Match it to your property size.
- Pump pressure: Higher psi = better spray reach.
- Boom width: Wider booms cover more ground, faster.
- Portability: Backpack, trolley, trailer or ATV mount?
- Power source: Manual, battery, 12V or petrol?
Trusted Australian suppliers often carry quality brands like Rapid Spray, Silvan, and Giantz. Look for UV-stabilised tanks, chemical-resistant seals, and spare part availability.
9. Choosing the Right Weed Sprayer for Your Property
Here’s a quick guide to help you pick the best option:
| Property Type | Recommended Sprayer |
| Small garden/backyard | Battery-powered sprayer or trolley |
| Medium property (1–5 acres) | 12V ATV or quad bike sprayer |
| Large acreage/farmland | Trailer-mounted sprayer with boom |
| Hilly/uneven terrain | ATV sprayer with boom kit |
| DIY custom setup | Tank and pump kit |
10. Tips for Safe and Effective Spraying
- Always wear protective gear: gloves, goggles, and mask.
- Spray during calm weather to avoid drift.
- Clean the tank and hoses after each use.
- Use herbicides according to the manufacturer’s instructions.
- Store in a cool, dry place away from direct sunlight.
Final Thoughts
Whether you’re chasing a weed sprayer for large areas, a compact battery-powered unit, or a tow behind weed sprayer, there’s a solution for every size and style of property. Investing in the right weed sprayer can save you hours of backbreaking work and help you stay on top of weed control all year round.
Before you buy, consider your land size, terrain, and preferred power source. And remember—sometimes, a weed sprayer boom kit or tank and pump upgrade is all you need to level up your existing setup.
Looking for the best weed sprayers for sale in Australia? Shop local, compare features, and choose a unit built to last.