The 5-Step Spring Lawn Prep Guide for Australian Conditions

Every spring, people start throwing fertiliser at their lawn hoping for a quick green-up — and then wonder why it didn't stick, or why they've got patchy growth three weeks later. Usually the problem isn't the product. It's the order things happened in.

Spring is genuinely the best window your lawn gets all year. The soil is warming up, the grass wants to grow, and whatever you put in now has the best possible chance of actually working. But you need to set things up right before you start feeding.

Here's the sequence we'd recommend.

Step 1: Aerate first, always

If the soil is compacted — and most lawn soil is, especially in high-traffic areas — nothing you apply is going to perform the way it should. Water sits on the surface. Fertiliser doesn't reach the roots. The grass looks fed but isn't really.

You don't need to hire a professional or buy expensive gear. A garden fork pushed 10–15 cm deep, every 20–30 cm across the lawn, is enough for a typical backyard. If you've got a bigger area, coring machines are available at most hire places for not much money. It's worth the hour.

Step 2: Check for thatch

Push your finger into the lawn down near the soil. If there's more than about a centimetre of spongy, dead organic material between the grass and the dirt, that's thatch — and it's blocking water and nutrients from getting through.

Scarify before you fertilise. A hard rake does the job on smaller lawns. For bigger areas, a scarifying machine (again, hireable) makes light work of it. You want the soil surface reasonably clear before anything goes on.

Step 3: Get the biology going with SilicaMax

This step gets skipped a lot, but it makes a real difference to how well everything else performs. Apply SilicaMax as a soil drench — about 50–100 mL per 10 m², diluted in water — before you fertilise. Silicon activates soil biology and conditions the root zone to receive nutrition more efficiently.

Apply to moist soil and water in lightly afterwards. Don't apply to bone-dry ground.

Step 4: Fertilise properly

Now the soil is open and the biology is active, it's ready to receive nutrition. Apply Pro-Strength Lawn Fertiliser (N 13 : P 3 : K 14) at 30–40 g per square metre. The NPK ratio is specifically balanced for spring lawn growth — enough nitrogen to drive colour and density, potassium to harden the plant, and low enough phosphorus that you're not stimulating weeds.

Water in well after application. If you're not expecting rain for more than three or four days, hold off until the forecast improves.

Most people see visible results in 7–10 days.

Step 5: Sort the bare patches

Once the main lawn is fertilised, walk it and identify any thin or bare areas. Oversow with a grass seed variety suited to your climate and sun conditions — your local nursery can point you to the right one. Water SeedPrimer into the seed after sowing. It speeds up germination noticeably and evens out establishment across the patch.

Do these five things in this order, and your lawn will come into summer in the best shape it can be. Skip ahead or cut corners and you'll spend the rest of the season trying to catch up.