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Fertilisers

Fertilisers

Healthy soil is the foundation of every thriving lawn and garden, and the right lawn fertilisers do most of the work in keeping it that way. When choosing fertilisers online, it’s important to select products that deliver the essential nutrients your turf needs to grow strong, resist stress, and maintain vibrant colour year-round. The right fertiliser acts as effective grass food, promoting deeper root growth, thicker coverage, and improved resilience through changing seasons. It also helps thin or patchy areas fill in, which leaves less room for weeds to take hold. Whether you’re maintaining an established lawn or encouraging fresh new growth, quality fertilisers help keep your soil balanced and your outdoor spaces looking their best.

Healthy soil is the foundation of every thriving lawn and garden, and the right lawn fertilisers do most of the work in keeping it that way. When choosing fertilisers online, it’s important to select products that deliver the essential nutrients your turf needs to grow strong, resist stress, and maintain vibrant colour year-round. The right fertiliser acts as effective grass food, promoting deeper root growth, thicker coverage, and improved resilience through changing seasons. It also helps thin or patchy areas fill in, which leaves less room for weeds to take hold. Whether you’re maintaining an established lawn or encouraging fresh new growth, quality fertilisers help keep your soil balanced and your outdoor spaces looking their best.

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Seaweed Crystals

Price range: $45.00 through $50.00

Select options This product has multiple variants. The options may be chosen on the product page

Amplify Fulvic 10 – Enhanced Soil & Plant Vitality

Price range: $15.00 through $200.00 / ea

Select options This product has multiple variants. The options may be chosen on the product page

Amplify Fulvic 10 2L Hose End Spray

$15.00 / ea

Aquaten Soil Conditioner & Wetting Agent

$110.00 5KG

Black Label Pro + Strength

$187.00 20kg

ColourGuard 100ml Concentrate

$30.00

ColourGuard 2L Hose-on RTU Spray

$30.00

Deep Green N & Fe Fertiliser

Price range: $20.00 through $150.00 / ea

Select options This product has multiple variants. The options may be chosen on the product page

Deep Green 2L Hose End Spray

$15.00 / ea

DynaMaxx Pure Seaweed

Price range: $7.51 through $260.00

Select options This product has multiple variants. The options may be chosen on the product page

DynaMaxx Pure Seaweed 2L Hose End Spray

$15.00

Earth-Ease Ground Breaker

Price range: $10.00 through $33.00 / ea

Select options This product has multiple variants. The options may be chosen on the product page

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Feed Your Lawn the Right Way: Choosing the Best Lawn Fertilisers and Grass Food for the Job

Not all fertilisers work the same way. Some deliver an instant boost, while others feed your lawn and garden slowly over time. When browsing fertilisers online, you’ll notice options designed for different results and timeframes. Liquid fertilisers act fast, perfect for reviving tired lawns or preparing for a special event, and are often used as a quick-acting grass food solution. Granular fertilisers release nutrients gradually, giving long-term support through changing seasons, and they suit larger areas where even coverage matters more than speed.

If you prefer a more natural approach, organic fertilisers improve soil structure and encourage microbial life, helping plants thrive over the long term. They also build the soil’s ability to hold moisture, which pays off through hot, dry stretches. For convenience and consistency, controlled-release options minimise leaching and reduce the need for frequent applications, making them a popular choice when comparing products or selecting the right grass food for your turf.

When to Apply Lawn Fertilisers Through the Seasons

Timing matters as much as the product you choose. Warm-season turf such as buffalo, couch, zoysia and kikuyu does most of its growing from spring through to early autumn, so that is the window where feeding delivers the clearest results. A feed at the start of spring supports recovery from winter dormancy, and a follow-up through summer keeps colour and coverage holding up under heat and heavy use. Growth slows through the cooler months, so lighter or less frequent applications are usually enough.

Water the lawn before and after applying granular products so nutrients move into the soil rather than sitting on the surface. Avoid feeding during a heatwave or when the soil is dry, and follow the application rate on the label rather than adding extra, since over-application burns leaf and wastes product. Garden beds work differently again: a slow-release feed at planting, topped up through the growing season, gives shrubs and vegetables steady support without repeated dosing.

Matching Lawn Fertilisers to Your Soil

Most products list an NPK ratio on the bag. Nitrogen drives leaf growth and colour, phosphorus supports root development, and potassium helps turf handle heat, wear and drought. A high-nitrogen grass food will green a lawn up quickly, while a more balanced blend suits new turf that needs to establish a root system first. Knowing your soil type helps too, since sandy soils leach nutrients faster and benefit from smaller, more regular feeds, while heavier clay holds nutrients longer but can need help with drainage and structure.

At Centenary Landscaping Supplies, we stock fertilisers for every need whether you’re greening up turf, revitalising a garden bed, or supporting new growth. Explore our range of lawn fertilisers online or visit us in-store for expert advice on achieving healthier soil and stronger plants year-round.

A hand holding fertiliser | Featured image for the lawn fertilisers product category page.
UltraGrow Hose End Sprayer

The ultimate liquid fertiliser sprayer

Introducing the UltraGrow Easy-Feed Sprayer, your ideal companion for delivering UltraGrow products to your garden with precision and ease. Designed specifically for use with UltraGrow formulations, this sprayer ensures that your plants receive the perfect amount of nutrients and soil amendments every time.

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Load your shopping cart with essential garden supplies.

Centenary Landscaping makes it easy to buy landscaping supplies online.

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