Unwanted grubby friends?
How to Tell if Lawn Grubs Are Wrecking Your Lawn (And What to Do About It)
If your once-lush lawn is starting to look patchy, brown, or just plain unhealthy, lawn grubs could be the hidden culprit. These underground pests are a common problem across Australia, especially in warmer months, and they can do serious damage before you even realise they’re there.
So how do you know if lawn grubs are the problem—and what can you do about them?
What Are Lawn Grubs?
Lawn grubs are the larvae of beetles, such as African Black Beetles and Christmas Beetles. They live in the soil and feed on grassroots, effectively cutting your lawn off from water and nutrients. The result? Dead patches that seem to appear overnight.
Common Signs You’ve Got Lawn Grubs
1. Brown or Dead Patches That Don’t Recover
One of the first signs is irregular brown patches that don’t improve with watering. Unlike drought stress, grub damage continues to spread even if your lawn is well-watered.
2. Turf Lifts Easily Like Carpet
If you can pull up sections of your lawn with little effort, that’s a major red flag. Grubs chew through the roots, so the grass loses its anchor in the soil.
3. Increased Bird Activity
Birds, especially magpies and ibis, love feeding on grubs. If you notice them constantly pecking at your lawn, they might be doing some pest control—but also causing extra damage in the process.
4. Spongy or Soft Lawn Feel
Walking across your lawn might feel oddly soft or spongy. That’s because the root system has been eaten away, leaving the turf unstable.
5. Visible Grubs in the Soil
If you dig just a few centimetres into affected areas, you may find creamy-white, C-shaped grubs. Finding more than a handful per square metre usually indicates a serious infestation.
When Are Lawn Grubs Most Active?
In most parts of Australia, lawn grubs are active from late spring through to early autumn. The warmer weather creates ideal conditions for beetles to lay eggs and for larvae to thrive.
How to Treat Lawn Grubs Effectively
The key to controlling lawn grubs is acting early before the damage spreads.
Acelepryn is a highly effective, long-lasting solution that works by targeting grubs before they can cause major damage. It’s ideal as a preventative treatment and provides extended protection through the peak season.
For existing infestations, Searles Dead Grub is designed to knock down active grub populations quickly, helping to stop further destruction and give your lawn a chance to recover.
Tips for Best Results
- Apply treatments in the cooler part of the day
- Water products in thoroughly to reach the root zone
- Monitor your lawn regularly during peak grub season
- Combine treatment with good lawn care (fertilising, mowing, watering)
Don’t Let Grubs Take Over
Lawn grubs can turn a healthy lawn into a patchy mess in a matter of weeks. By knowing the signs and acting quickly with the right products, you can protect your lawn and keep it looking its best year-round.
If you suspect grubs are at work, it’s worth taking action sooner rather than later—your lawn will thank you for it.