Slow Release Lawn Fertiliser – Lawns SR 10kg

NZLA online exclusive

Lawns SR – Affordable, Genuine Slow-Release Fertiliser for New Zealand Lawns

Lawns SR was created to give Kiwi homeowners and contractors a genuine slow-release lawn fertiliser at a competitive price. Too many products on the market claim to be slow-release but are little more than agricultural blends or low-grade imports with unreliable coatings that crack, release unevenly, and deliver inconsistent results. Lawns SR was developed to change that.

It’s a true, high-quality polymer-coated slow-release fertiliser, made by the same trusted supplier behind our All Seasons range. It’s engineered for consistent performance and priced as sharply as possible.

We’re offering this at a minimal margin, it’s not something we can sell through resellers because there’s simply no room in it. That reflects our commitment to putting genuine quality in the hands of Kiwi homeowners and contractors.

If you come across cheaper options claiming to be slow-release, consider how they’re achieving that price. We purchase hundreds of tonnes a year and already secure some of the best pricing available. The reality is that many cheaper alternatives are low-grade imports that don’t perform consistently, so while they might look like a bargain, you often end up paying more for a product that doesn’t deliver. See our article for more detail.

While Lawns SR isn’t quite the same premium formulation as All Seasons or All Seasons N+, it’s still a far superior option compared with many so-called “slow-release” fertilisers found online — and at least here, you’re getting what you pay for.

Why choose Lawns SR?

• Real slow-release nitrogen – polymer-coated prills for predictable feeding and strong colour without surge growth
• Premium formulation, affordable price – professional technology, repacked for everyday lawn owners
• Balanced nutrition for steady growth, deeper roots, and improved colour consistency
• Lasts up to 10 weeks – fewer applications, more value
• Ideal for all lawn types including ryegrass, tall fescue, fine fescue, and kikuyu

Lawns SR bridges the gap between professional and retail fertilisers, delivering genuine slow-release performance without the premium price tags.

Product details

• NPK analysis: 20-0-16 + 6 % Iron
• Application rate: 2.5 kg per 100 m² (250 kg/ha)
• Longevity: 8–10 weeks of consistent release
• Bag size: 10 kg
• Coverage: 10kg bags covers 500 m²

Apply evenly over the lawn when soil is moist, then water in lightly to activate the coating. Lawns SR delivers a rich, dark-green colour while maintaining balanced, steady growth throughout the season.

What makes it different

Most fertilisers marketed as “slow-release” rely on cheap inhibitor coatings or agricultural-grade urea that break down unevenly, wasting nitrogen and causing patchy growth. Lawns SR uses genuine premium polymer-coated urea technology, not the low-grade Chinese coatings found in many products from other online lawn shops.

That means:

• Less nutrient loss to volatilisation or leaching
• More even growth and colour
• Reduced mowing and surge flushes
• Better value per application

When to use

Lawns SR can be applied year-round, but it performs best:

• In early spring to restore growth and colour
• Before summer for drought and heat resilience
• In autumn to strengthen roots before winter stress

Repeat every 8–10 weeks for healthy, balanced growth.

Ideal for

• Homeowners wanting professional lawn results at a fair price
• Landscapers maintaining residential or commercial lawns
• Anyone tired of paying more for “slow-release” products that aren’t