Perth summers are hot and dry, and the combination of sandy soil, afternoon heat, wind exposure and long periods without rainfall can be challenging for lawns and planted areas. Preparing early is often simpler than restoring a stressed garden in January.
Whether you maintain a coastal courtyard in Scarborough, an established Melville garden, a new family lawn in Ellenbrook or a shady Como backyard, this practical Perth, Western Australia guide covers soil improvement, mulch, irrigation, pruning, lawn care and waterwise plants. If you need assistance, explore our Perth gardening services and gardening service locations.
1. Assess your Perth garden before summer
Perth has a Mediterranean climate, with most rain falling in the cooler months. Individual gardens behave differently: coastal locations may suffer from salt exposure and wind, while mature suburban gardens can have substantial tree-root competition and shade. New developments often need attention to soil preparation and establishing young planting.
- Map sunny, shaded and windy spots and note where soil dries out quickest.
- Check for overgrown paths, poor drainage, leaning shrubs and tired lawn sections.
- Run irrigation stations and identify dry patches, overspray and leaks.
- Look for water beading on soil, which can indicate water repellency.
2. Improve Perth’s sandy soils
Many Perth gardens are built on sandy soil that drains quickly and holds relatively few nutrients. Adding organic matter to new garden beds can improve soil structure. Depending on the site, clay-based soil conditioners can also increase moisture and nutrient retention. Do not assume every area has the same soil: test drainage and infiltration first.
For new beds, work suitable compost and soil amendments into the root zone before planting. In established gardens, avoid damaging roots; top-dressing and mulching may be more appropriate. Water Corporation explains options in its guide to improving sandy soil.
What if water runs off instead of soaking in?
Sandy soils can become water-repellent. If water beads on the surface or runs down slopes rather than penetrating, investigate whether a wetting agent and targeted soil improvement are appropriate. Simply adding more sprinkler time may waste water without addressing the cause.
3. Mulch garden beds to reduce moisture loss
Coarse organic mulch can protect exposed soil, help reduce evaporation, discourage weed growth and give beds a more finished appearance. A suitable waterwise mulch layer is commonly around 5–10 cm depending on the material. Keep mulch away from trunks and crowns to avoid trapping moisture against stems.
- Remove established weeds and debris before spreading fresh mulch.
- Check drip lines and sprinkler placement before covering irrigation.
- Maintain an even layer without burying smaller plants.
- Avoid fine mulch that compacts and prevents water reaching the soil.
For garden bed preparation, weeding and routine upkeep, see our Perth gardening services.
4. Prepare lawns for the Perth heat
The right lawn preparation depends on grass variety, soil condition and irrigation coverage. A yellow patch is not necessarily a sign that the whole lawn needs replacing: blocked sprinkler heads, soil compaction, hydrophobic soil, shallow roots or shade may all contribute.
Inspect, aerate and mow thoughtfully
Check whether the soil is compacted or water-repellent before applying lawn products. Appropriate aeration and soil treatments can improve infiltration, while regular mowing at the correct height helps avoid unnecessary stress. Avoid scalping turf during hot weather; it exposes the soil and reduces the plant’s ability to recover.
Where turf is severely damaged or you want to redesign lawn areas, our Perth landscaping services can help with wider improvements such as turf replacement, soil preparation and irrigation changes.
5. Inspect irrigation and follow WA watering rules
Run each station before the first summer heatwave. Look for sprinklers watering footpaths, driveways or fences, spray blocked by shrubs, damaged pop-ups, clogged nozzles and drip lines that are no longer reaching plant roots. Match the watering method to the planted area and adjust the controller as seasons change.
Perth households generally have assigned sprinkler days, and a winter sprinkler switch-off applies in relevant areas from 1 June to 31 August. Different rules and exemptions may apply, so check Water Corporation’s current watering days and restrictions for your property rather than relying on a generic schedule.
Newly installed lawns and gardens may be eligible for a temporary exemption, subject to the current conditions. Waterwise gardening means improving how effectively water reaches the root zone, not simply extending irrigation run times.
6. Choose plants suited to Perth and group by water needs
Choose plants based on mature size, soil, drainage and sun or wind exposure rather than appearance alone. Depending on the site, locally suitable native shrubs, groundcovers, kangaroo paws and selected grevilleas can offer useful low-water planting options. Planting requirements vary, and not every native species suits every garden.
Group plants with similar watering requirements so irrigation zones can be managed more efficiently. The Water Corporation Waterwise Plants Directory lets you research options by location and garden characteristics.
7. Prune, weed and clean up before temperatures peak
Garden clean-ups are especially useful where shrubs have overgrown paths, weeds have taken over garden beds or accumulated leaves and branches make the yard difficult to maintain. Selective pruning can improve access, airflow and appearance, but aggressive cutting during extreme heat can expose plants to additional stress.
- Remove dead, damaged and unwanted growth where appropriate for the species.
- Trim hedges to maintain paths and outdoor entertaining space.
- Weed beds and remove accumulated garden debris before mulching.
- Edge lawns and clean up around paved paths for a finished result.
For more on timing and technique, read our Perth garden pruning guide.
8. Maintain paved areas and outdoor paths
Inspect garden pathways, patios and driveway edges for weeds, lifted pavers, encroaching roots and poor drainage. Tidy hardscaping can make even a modest garden look better maintained, while uneven or unstable paving may need professional assessment.
See Perth paving services for driveways, paths, patios and wider hardscaping improvements.
9. Perth seasonal garden care checklist
Spring: September–November
Inspect irrigation, improve soil, mulch exposed beds, trim suitable shrubs, control weeds and check lawn health before prolonged heat. Spring is also a useful time to plan garden renovations and planting where establishment conditions are suitable.
Summer: December–February
Monitor plant stress, ensure irrigation follows local rules, maintain mulch and avoid heavy pruning in extreme heat. Look for sprinkler faults and water-repellent patches rather than automatically increasing watering time.
Autumn: March–May
Assess damage from summer, replenish garden beds where appropriate, plan cooler-season planting and address worn turf or drainage issues.
Winter: June–August
Review drainage, remove problematic weeds, assess mature trees and observe the winter sprinkler switch-off where it applies.
10. Gardening needs across Perth suburbs
In Scarborough, sandy coastal gardens may need wind-conscious plant selection and careful mulching. Melville has many established gardens with mature trees, shaded beds and mixed lawn areas. Ellenbrook properties may feature newer lawns, exposed garden beds and young planting that needs sound soil preparation. Como courtyards and older gardens often benefit from detailed pruning and garden-bed care.
See the full Perth gardening suburb directory for more local service areas.
Frequently asked questions about summer gardening in Perth
When should I prepare my Perth garden for summer?
Spring is a practical starting point. Check irrigation and lawn coverage, control weeds, refresh mulch and improve problem areas before long spells of hot weather.
How deep should mulch be in Perth garden beds?
A suitable coarse waterwise mulch layer is often around 5–10 cm depending on the material and plants. Keep it clear of trunks and plant crowns.
Why do dry patches appear in my lawn?
Common causes include poor sprinkler coverage, water-repellent or compacted soil, shade and root competition. Identify the actual cause before treating or replacing turf.
Can I use sprinklers every day in Perth during summer?
Usually not. Designated watering days apply to many Perth properties, with specific rules and exemptions. Always check current watering requirements.
Which plants are best for a low-maintenance Perth garden?
Look for plants matched to your soil, exposure and irrigation conditions, and group species with similar watering needs. The Water Corporation plant directory is a useful local starting point.
Professional gardening and landscaping across Perth
Some gardens need only a tidy-up, soil improvement and regular upkeep; others benefit from turf renewal, planting and paving. Perth Gardening and Landscaping Professionals provides garden maintenance and clean-ups, landscaping and paving services across selected Perth suburbs.
Ready to prepare your outdoor space for summer? Request a gardening quote and include your suburb, photos and approximate measurements so we can discuss the work involved.