Last summer, half the lawns in Karrinyup had brown patches that wouldn't go away no matter how much people watered. Everyone thought it was the heat or lack of rain, but when we tested the soil, the real problem was obvious - those lawns hadn't been fertilized properly in years.
Perth's sandy soil doesn't hold nutrients. Everything washes straight through with watering or winter rain. Most homeowners fertilize once in spring and wonder why their lawn looks terrible by Christmas. The truth is Perth lawns need seasonal feeding - not just one hit per year - and they need products that actually work in our soil conditions.
That's what we do at Alpha Omega Mowing. We're a local fertiliser supplier based in Karrinyup, and we've been treating lawns across Perth's northern suburbs for years. We know which products work in sandy soil, when to apply them, and how much your lawn actually needs based on the season and grass type.


Walk into any hardware store and you'll see fifty different fertiliser bags. They all claim to be perfect for lawns. Most aren't - at least not for Perth.
Our lawn fertilizer service focuses on what actually works in Perth's unique conditions. Sandy soil that drains fast, long hot summers that stress grass, and water restrictions that limit how much you can water in fertilizer - these factors change what products work and when to use them.
We recommend fertilizing lawns at the end of every season. Not once a year - four times. That sounds like a lot until you understand how fast nutrients disappear from Perth soil.
Spring fertilizing gets grass growing strong after winter. We use nitrogen-heavy formulas that support rapid growth when conditions are perfect. Lawns across Duncraig and Gwelup respond brilliantly to spring feeding - they thicken up fast and crowd out weeds before summer heat arrives.
Summer fertilizing is lighter but critical. Grass under heat stress still needs nutrients, but heavy nitrogen can burn stressed lawns. We use balanced formulas with extra potassium to help grass handle heat and water stress. This is when suburbs like Carine and Doubleview see the biggest difference - fertilized lawns stay green while unfed ones go dormant and brown.
Autumn fertilizing prepares lawns for winter and sets them up for the next growing season. Root development happens big-time in autumn when soil is still warm but air temperature drops. Proper autumn feeding in areas like Padbury and North Beach means lawns come out of winter thick and healthy instead of thin and weak.
Winter fertilizing is the one most people skip, and it shows. Slow-release formulas applied in winter feed grass gradually through the cooler months without promoting excessive top growth that's vulnerable to fungal issues. Lawns that get winter feeding look noticeably better than neighboring properties that skipped it.
Our fertilizing service includes proper application at rates that match your lawn's actual needs. Not guessing based on bag instructions written for eastern states soil - calculated amounts based on Perth sandy soil, your grass type, and current season.

We know what Perth lawns need to stay healthy year-round. Proper mowing, seasonal fertilizing, and the right products make all the difference.

If something's not right, we'll fix it. No arguments, no excuses. That's how we've built our reputation across the northern suburbs.

Most of our customers come from referrals. Neighbors see great-looking lawns and ask who does them. That's how we grow our business.

When you call or message, we get back to you quickly. Need a quote? Want to book a service? We don't leave you waiting around.

We're based in Karrinyup and we work these suburbs every day. We know Perth's soil, climate, and what actually works here.

We've been fixing struggling lawns and keeping healthy ones green across Perth's northern suburbs for years.
Here's something most Perth homeowners don't know - even perfectly fertilized lawns can struggle if water doesn't penetrate the soil properly. That's where wetta soil products come in.
Perth's sandy soil gets hydrophobic, especially during our long dry summers. Water hits the surface and runs off instead of soaking in. You can stand there watering for twenty minutes and the soil two inches down is still bone dry. Your grass suffers even though you're following watering restrictions properly.
Our wetta soil application service fixes this problem. Wetta soil is a wetting agent that breaks down the waxy coating that builds up on sand particles. Once applied, water penetrates soil easily instead of running off or pooling on the surface.
We see dramatic results in suburbs like Trigg and Hillarys where sandy soil is worst. Lawns that were patchy and struggling suddenly green up within weeks once water can actually reach the roots. The grass was never the problem - it just couldn't access water sitting on top of hydrophobic soil.
Wetta soil needs applying seasonally, not just once. We typically apply it at the start of summer when hydrophobic conditions develop, and again in late summer when the problem is worst. Some properties with severely sandy soil benefit from autumn application too.
The application process matters as much as the product. Wetta soil needs watering in properly to work. We apply it, water it in thoroughly, and make sure it's penetrated the soil surface where it needs to work. Just spreading it dry on the lawn and hoping for rain doesn't cut it.
Combined with proper fertilizing, wetta soil application transforms struggling Perth lawns. Water reaches roots, fertilizer doesn't wash away before grass can use it, and your lawn stays healthy through conditions that would normally stress it badly.

Guessing what your lawn needs wastes money and often makes problems worse. That's why we offer soil testing before recommending any fertilizer program.
Our soil testing service checks the things that actually matter for Perth lawns - pH levels, nutrient deficiencies, and soil composition. Different grass types prefer different pH ranges, and Perth soil naturally tends toward certain pH levels that don't always match what your grass needs.
Testing pH and acidity shows whether your soil is too acidic or too alkaline. Couch grass does best in slightly acidic to neutral soil. If your pH is way off, no amount of fertilizer helps until you fix the soil chemistry. We see this constantly in Gwelup and Stirling - lawns that won't respond to feeding because the pH is wrong and grass can't access nutrients even when they're present.
Nutrient testing reveals specific deficiencies. Maybe your lawn is short on nitrogen but has plenty of phosphorus. Generic "all-purpose" fertilizer wastes money adding phosphorus you don't need while not providing enough nitrogen. Targeted feeding based on test results works better and costs less long-term.
Soil composition testing tells us how your specific soil behaves. Some areas of Perth have surprisingly heavy soil under the sand layer. Others are pure sand all the way down. This affects water retention, nutrient holding capacity, and what fertilizer formulas work best.
We test soil, explain results in plain language, and recommend specific treatments based on what your lawn actually needs. Not cookie-cutter programs - targeted solutions for your property's unique conditions.

One of the most common questions we get is whether to use granular or liquid fertilizer. The answer depends on your lawn's condition, soil type, and what you're trying to achieve.
Our service includes determining what's best for your specific lawn based on actual conditions, not just defaulting to one product type.
Granular fertilizers work well in Perth's sandy soil when you need slow, steady feeding. The granules break down gradually, releasing nutrients over weeks or months. This matches how Perth lawns need feeding - consistent nutrition rather than one big hit that washes away with the next watering.
We use granular products for most maintenance feeding across Karrinyup and Duncraig. They're cost-effective, easy to apply evenly, and the slow-release formulas we stock work perfectly with Perth's watering restrictions. Your lawn gets fed consistently between applications without needing constant attention.
Liquid fertilizers shine when lawns need quick correction or a boost. If your lawn is showing nutrient deficiency symptoms - yellowing, slow growth, poor color - liquid products green it up fast. They're absorbed quickly through grass blades and roots, showing results within days instead of weeks.
We use liquid fertilizers for problem-solving in suburbs like Waterman's Bay and Marmion. A lawn coming out of winter looking pale gets liquid feeding for quick greening. Grass recovering from stress or damage responds faster to liquid products than waiting for granular to break down.
Sometimes the best approach uses both. Granular slow-release for baseline feeding, with liquid applications for seasonal boosts or problem correction. We assess your lawn's condition and recommend whatever combination actually works for your situation.
The application method matters too. Granular products need watering in to activate and prevent burning. Liquid products need proper dilution and even spraying to avoid streaking or over-application. We handle application properly so you get the benefits without the risks of DIY mistakes.


Not everything needs synthetic fertilizers. Garden beds, native areas, and properties where people want organic approaches benefit from natural products like composts, manures, and biochar.
Our organic fertilisers service focuses on garden applications where slow, natural feeding works better than chemical products. These aren't lawn fertilizers - they're soil amendments that improve garden bed health long-term while feeding plants gradually.
Compost application enriches Perth's nutrient-poor sandy soil. Quality compost adds organic matter that improves water retention, provides slow-release nutrients, and encourages beneficial soil organisms. We see great results in garden beds across North Beach and Sorrento - plants that struggled in straight sand thrive once we've amended beds with proper compost.
Manure products provide rich, natural nutrition for hungry garden plants. Composted cow or sheep manure works brilliantly for vegetable gardens and flower beds. It feeds plants while improving soil structure - something synthetic fertilizers don't do.
We source quality organic products and apply them properly. Fresh manure burns plants - we only use properly aged or composted products. Application depth and timing matter - we incorporate organic fertilisers when planting or topdress around established plants at rates that benefit without overwhelming.
Biochar is newer but shows real promise in Perth gardens. It's charcoal that's been treated to hold water and nutrients in soil. In sandy soil that normally drains straight through, biochar acts like a sponge - holding moisture and nutrients where plant roots can access them. We're using it more in Innaloo and Padbury gardens with excellent results.
Organic fertilising isn't just about feeding plants - it's about building healthy soil that supports plant growth naturally. Chemical fertilizers feed plants directly but do nothing for soil health. Organic products improve the whole growing environment over time.
Perth lawns and gardens need feeding that matches our climate and soil conditions. That's where slow-release and controlled-release fertilizer formulations really shine.
The difference between quick-release and slow-release products is huge in Perth. Quick-release fertilizers dissolve fast - great for instant greening, terrible for our sandy soil that doesn't hold nutrients. Most of that expensive fertilizer washes straight through before grass can use it. You're feeding the groundwater, not your lawn.
Our slow-release and controlled-release application service uses products designed to release nutrients gradually over months. These formulations feed grass consistently without waste, match Perth's watering restrictions, and don't require constant reapplication.
Slow-release formulations work through various mechanisms. Some use coating technology that breaks down slowly in soil. Others rely on particle size - large granules dissolve slower than small ones. The best products for Perth use multiple release mechanisms so nutrients become available steadily regardless of watering patterns.
We apply slow-release products to lawns in Hillarys and Karrinyup knowing they'll feed grass for three to four months. That's efficient feeding that matches seasonal needs without requiring monthly applications. Your lawn gets consistent nutrition without you thinking about it constantly.
Controlled-release formulations are even more sophisticated. They release nutrients based on soil temperature and moisture - exactly what triggers grass growth in Perth. When conditions are right for growth, more nutrients become available. When grass is dormant or stressed, nutrient release slows. It's feeding that automatically matches your lawn's actual needs.
For gardens, slow-release formulations prevent the boom-and-bust cycle of quick-release products. Plants get steady nutrition that supports consistent growth without forcing excessive foliage that's vulnerable to pests and disease. We use these products in Carine and Doubleview gardens where consistent feeding matters more than rapid growth.
Application technique affects how well these products work. Even spreading ensures consistent feeding across the whole lawn or garden. Proper watering activates products without washing them away. We handle application so you get the full benefit of premium slow-release formulations.

Fertilizer advice written for eastern states doesn't work in Perth. Different soil, different climate, different grass types, and completely different challenges. That's why local expertise matters for lawn fertilizer service.
We're based in Karrinyup and we work across Perth's northern suburbs every day. We know how sandy soil in Trigg differs from slightly heavier soils in parts of Gwelup. We understand when coastal salt affects plants in Waterman's Bay versus inland properties. We recognize seasonal patterns - when lawns need boosting, when to back off feeding, what works in Perth's actual conditions.
That knowledge shows up in product recommendations. We don't suggest fertilizers that work great in Melbourne but wash straight through Perth sand. We stock and apply products proven to work here - slow-release formulas that feed grass despite our watering restrictions, wetta soil products that fix our specific hydrophobic soil issues, organic amendments that actually improve Perth sand.
We also understand timing. Generic fertilizer schedules don't account for Perth's extended dry summers or our mild winters. We time applications around actual Perth conditions - when rain is likely to help wash products in, when heat stress requires careful feeding, when grass is actively growing versus dormant.
If your lawn has brown patches that won't respond to watering, stays pale and thin despite your efforts, or just never looks as good as you want, proper fertilizing probably helps.
Our lawn fertilizer service and fertiliser supplier expertise covers Karrinyup, Duncraig, Gwelup, Doubleview, Carine, Padbury, North Beach, Trigg, Hillarys, Sorrento, Marmion, Waterman's Bay, Stirling, and Innaloo. We provide soil testing, recommend appropriate products, apply them correctly, and schedule seasonal feeding that keeps your lawn healthy year-round.
Give us a call or send a message. We'll come assess your lawn or garden, discuss what products and schedule make sense for your property, and give you a straight quote. No pushy sales - just honest advice about what your lawn actually needs.
Most of our fertilizing customers come from neighbors seeing results and asking what we used. Lawns that transform from patchy and pale to thick and green get noticed. That's how we've built the business - doing solid fertilizer work that shows clear results.
Your lawn doesn't have to struggle through Perth's challenging conditions. With the right products applied at the right times, sandy soil lawns can stay healthy and green year-round. We've proven that across hundreds of properties in the northern suburbs.
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Alpha Omega Mowing
PO BOX 181 Karrinyup, Perth Western Australia 6921
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