Water runs off the surface or beads instead of soaking in. One of Perth’s most underdiagnosed lawn problems — and one of the easiest to fix once identified.
Applied water sits on the surface or runs to the lowest point instead of penetrating.
Dry soil under green-looking grass
The surface can look fine while the root zone stays bone dry.
Patches that worsen in summer
Repellence is strongest when the soil dries out in the heat.
Perth-specific
Why It Happens in Perth
Perth’s sandy soils develop a waxy, water-repellent coating on the sand grains, especially through summer. The result is that irrigation never reaches the roots — the lawn looks under-watered no matter how much you run the reticulation.
Perth treatment guide
How to Treat It
Read the label. Always follow current product label directions before applying any pesticide or chemical — rates and safety intervals vary by product. We apply all products per APVMA label requirements.
1
Apply a wetting agent
A soil wetting agent breaks down the waxy coating so water can penetrate. Apply per label and water in.
2
Water deeply, less often
Short frequent watering makes repellence worse; deep soaks on roster days help.
3
Add organic matter on bad areas
Top-dressing with a quality lawn mix improves long-term water retention in pure sand.
Not sure which product or how severe it is? The Lawn Clinic ($99) confirms it before you spend money on the wrong treatment.
Post-treatment recovery
Recovering Your Lawn
Improvement is often visible within a couple of weeks of a wetting-agent program. Severe or long-standing cases may need a second application and some top-dressing.
Not sure it’s hydrophobic soil perth?
Confirm it — book a Lawn Clinic
Several lawn problems look alike. Getting the diagnosis wrong means treating the wrong thing and wasting money on products that won’t work.
