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Fence, outdoor bench and lawn.


Fertilising is an essential part of lawn maintenance, encouraging growth and healthy grass all year long.

We suggest doing it twice a year – once in the autumn months to protect it throughout the winter and once in spring to help boost the growth and carry you through the summer months.

The first thing you need to do is work out what type of lawn you have, as this will make a difference with which products you use. Common types of grass include Kikuyu, Tall Fescue, Couch and Buffalo.


1Gather your tools and materials

Below are all of the tools and materials you'll need to complete this project.
DIY - Tools and
  materials - How to fertilise your lawn

2Choose from chemical or organic lawn care

There are two types of lawn care – chemical and organic. A chemical lawn builder gets instant growth and helps green up your lawn while organic fertilisers are eco-friendly and help with your soil's overall health.

There are also two types of application – liquid and pellets. Liquid tends to absorb quickly, whereas the pellets break down over a period of time. Using one over the other depends on what type of gardener you are – pellets allow you to sit back and let the process happen, meaning a more hands-off approach. Liquid does require a little more regular maintenance but delivers quick results.

It's also important to check if your ground is hydrophobic before choosing your fertiliser. The best way to check is to see what water does when applied – if it's hydrophobic, the water will pool on the surface or run completely off. You may need to use a wetting agent on your grass, prior to fertilising, if this is the case.

DIY - Step 1 - Choose from chemical or
  organic lawn care - How to fertilise your lawn - Louisa S

3Use a lawn spreader to evenly distribute your fertiliser

If you've chosen a dry fertiliser, use a spreader so you get a nice even coverage. First, pop on your gardening gloves. Then, adjust the spreader setting as indicated on the back of the pack and in line with the size of your lawn. Fill the tray with fertiliser and then walk at a steady pace, turning the handle as you go so it evenly spreads it over your lawn.

DIY - Step 2 - Use a lawn spreader to
  evenly distribute your fertiliser - How to fertilise your lawn - Louisa S

4Water in the fertiliser

After you've distributed the fertiliser, water it well to help it sink in. 

Person watering a lawn using a spray hose

5Apply liquid fertiliser

Alternatively, you might choose to use a hose-on liquid fertiliser. Just clip the bottle to the end of your hose and you're ready to go!

A person applying liquid fertiliser to a lawn using a bottle attached to a hose

6Our tip

If you're using pellets, fertilise your lawn every 3–4 months. If you're using a liquid, it should be done every 1–2 months. If you're unsure, check the back of the packaging of the product you're using – it'll have a guide.

7Get your lawn growing

Keep your lawn looking fresh with our guides to lawn maintenance, including mowing, trimming and weeding.

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Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.