When Should You Fertilise Your Lawn in Australia?

A healthy lawn doesn’t just happen with regular watering and mowing — fertilising at the right time is equally important. In Australia, the best fertilising schedule depends on your grass type, climate, and the season. Applying fertiliser correctly can help your lawn grow thicker, greener, and more resistant to weeds and pests.

The Best Time to Fertilise Your Lawn

For most Australian lawns, the ideal time to fertilise is during the growing seasons — mainly spring and autumn.

Spring Fertilising

Spring is one of the most important times to fertilise your lawn. As temperatures begin to rise, grass starts actively growing again after winter dormancy. A spring fertiliser provides essential nutrients like nitrogen to encourage healthy growth and vibrant green colour.

Autumn Fertilising

Autumn fertilising helps strengthen the roots before the cooler winter months arrive. It improves the lawn’s ability to survive colder temperatures and prepares it for strong regrowth in spring.

Should You Fertilise in Summer?

Yes, but carefully. During the hot Australian summer, lawns can become stressed due to heat and lack of water. Using a slow-release fertiliser can help maintain lawn health without causing excessive growth or burning the grass. Always water your lawn properly after applying fertiliser in summer.

What About Winter?

Most warm-season grasses in Australia, such as Buffalo, Couch, and Kikuyu, slow down during winter. Heavy fertilising is generally not recommended at this time because the lawn is not actively growing. However, cool-season grasses may still benefit from light feeding depending on the climate.

How Often Should You Fertilise?

In general, Australian lawns benefit from fertilising around 2–4 times per year. The exact schedule depends on:

• Grass variety
• Soil quality
• Local climate
• Lawn usage and foot traffic

Over-fertilising can damage your lawn, so it’s important to follow product instructions and avoid applying too much.

Signs Your Lawn Needs Fertiliser

Your lawn may need fertilising if you notice:

• Yellow or pale grass
• Slow growth
• Thin or patchy areas
• Increased weeds
• Poor recovery after mowing

A nutrient-rich lawn is usually thicker, greener, and more resilient.

Tips for Better Lawn Fertilising

• Water the lawn before and after fertilising
• Avoid fertilising during extreme heat
• Use the right fertiliser for your grass type
• Apply evenly to prevent patchy growth
• Mow regularly for healthier grass