⚠ GD05 Compliant · Classified Stabilised On Application

⚠ GD05 Compliant

Drill Seeding Isn’t Stabilisation. It’s A Hope Strategy.

Drill seeding puts seed in the ground and leaves your soil exposed until it grows. Stabi-Mulch™ is classified as stabilised the moment it's applied. Same day. No waiting on grass strike.

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The part nobody mentions

Drill Seeding Doesn't Make Your Site Compliant. It Makes It Wait.

Your consent doesn't care that seed is in the ground. It cares whether the surface is stabilised. Drill seeding might get you there eventually, it might not. Three weeks, longer in winter, sometimes not at all. Under the NZ GD05 hydromulch guideline, Stabi-Mulch™ is classified as stabilised the moment it's applied. Not when the grass shows up. The day we spray.

The Problem

Everything That Goes Wrong On A Civil Site Happens In The Gap.

The gap is the stretch between bare dirt and established cover. Drill seeding leaves it wide open.

The Wind Hits

Dust. Dust means complaints. Complaints mean the council starts paying close attention to your site, and that attention doesn't leave when the wind does.

The Rain Hits

Sediment moves, rework is inevitable. The topsoil you paid to shape ends up somewhere it shouldn't be, now it's an incident, not a weather event.

The Inspector Arrives

Exposed area, no cover, no classification. Your staging stays locked, the next crew waits, and the programme slips a week you didn't have.

It Doesn't Take

You drill seed again. Second application, second mobilisation, second invoice. And the site was exposed the entire time in between.

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✓ GD05 Compliant Classified Stabilised on Application

✓ Stabi-Mulch™ - 3 Weeks Old

✓ Hay Mulch - 3 Weeks Old

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✓ GD05 Compliant Classified Stabilised on Application

✓ Stabi-Mulch™ - 3 Weeks Old

✓ Hay Mulch - 3 Weeks Old

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About Image

Before Stabi-Mulch™

During Stabi-Mulch™

After Stabi-Mulch™

About Us

NZ's Only Locally Made Hydromulch. Built for This Country's Projects.

NZ's Only Locally Made Hydromulch.

Exclusive proprietary fibre

We hold exclusive NZ rights to our wood fibre. Other contractors import generic product. We make ours, control every batch, and deliver consistent performance on every project.

NZ's largest hydromulching equipment

American-made top-of-the-line units. 3–5 hectares per day. Competitors manage around 1. When your programme can't wait, our capacity is the difference.

Nationwide coverage

Primary branches across NZ. We service projects from Northland to Southland. If your job is in NZ, we can get there.

Drill Seeding vs Stabi-Mulch™

Drill Seeding vs Stabi-Mulch™

Drill Seeding vs Stabi-Mulch™

Same goal. Very different timeframes, risk profiles and outcomes on site.

Same goal. Very different timeframes, risk profiles and outcomes on site.

Comparison

Comparison

Drill Seeding

Drill Seeding

Stabi-Mulch™

Stabi-Mulch™

When is your site stabilised?

When is your

site stabilised?

When vegetation establishes. Weeks, if it takes.

When vegetation establishes. Weeks,

if it takes.

The moment it’s applied.

The moment it’s applied.

GD05 classification

GD05 classification

Requires established cover

Requires established cover

Classified stabilised on application

Classified stabilised on application

Wet ground

Wet ground

Job stops

Job stops

Sprays on regardless

Sprays on regardless

Steep ground and batters

Steep ground and batters

Limited machine access

Limited machine access

100m cannon reach, no machine on the face

100m cannon reach, no machine on the face

ESC devices stay on site

ESC devices

stay on site

Until cover establishes

Until cover establishes

Site classified stabilised on application

Site classified stabilised on application

Protection on day one

Protection on day one

None

None

Bonded crust locked into the soil surface

Bonded crust locked into the soil surface

Moisture for germination

Moisture for germination

Whatever the sky gives you

Whatever the sky gives you

Holds 13.78× its own weight in water

Holds 13.78× its own weight in water

Dust and sediment control

Dust and sediment

control

Only after cover establishes

Only after cover establishes

Immediately

Immediately

Risk of doing it twice

Risk of doing it twice

High if the weather turns

High if the weather turns

Low. Applied once, it holds.

Low. Applied once, it holds.

Seed, fert and mulch

Seed, fert and mulch

Separate passes

Separate passes

One application

One application

How Stabi-Mulch™ Works

From Bare dirt to stabilised site in one application

From Bare dirt to stabilised site in one application

From Bare dirt to stabilised site
in one application

5.0

From 50+ ratings
1 - Slurry Mix & Application

Our crew mixes Stabi-Mulch wood fibre, seed, fertiliser, tackifier, and water into a slurry, then sprays it directly onto bare or disturbed soil, capable of reaching 100 metres with our cannon system.

Our crew mixes Stabi-Mulch wood fibre, seed, fertiliser, tackifier, and water into a slurry, then sprays it directly onto bare or disturbed soil, capable of reaching 100 metres with our cannon system.

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2 - Instant Surface Bond
2 - Instant Surface Bond

Upon contact, the slurry forms a permeable crust that bonds with soil particles, locking topsoil in place and creating a protective layer against wind, rain, and runoff.

Upon contact, the slurry forms a permeable crust that bonds with soil particles, locking topsoil in place and creating a protective layer against wind, rain, and runoff.

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3. Classified Stabilised Immediately
3. Classified Stabilised
Immediately

Under the NZ GD05 hydromulch guideline, your site is officially classified as stabilised from the moment Stabi-Mulch is applied, no waiting on grass strike for council sign-off.

Under the NZ GD05 hydromulch guideline, your site is officially classified as stabilised from the moment Stabi-Mulch is applied, no waiting on grass strike for council sign-off.

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4. Moisture retention, Germination & Permanent Stabilisation
4. Moisture retention, Germination
& Permanent Stabilisation
4. Moisture retention, Germination & Permanent Stabilisation

With a water holding capacity of 13.78× its own weight, the mulch keeps soil damp in dry conditions, accelerating germination, faster handover, and earlier revenue.

With a water holding capacity of 13.78× its own weight, the mulch keeps soil damp in dry conditions, accelerating germination, faster handover, and earlier revenue.

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3SRM Site Specific Soil Revegetation Method

Some Sites Need More Than A Standard Blend. That’s What 3SRM Is For.

Some Sites Need More Than A Standard Blend. That’s What 3SRM Is For.

Some Sites Need More Than A Standard Blend. That’s What 3SRM Is For.

3SRM is our Site Specific Soil Revegetation Method. Discovery, analysis, recommendation. We assess the site, test the soil, and build a Stabi-Mulch blend around what your ground actually needs. Difficult soil, strict specs, high failure risk: that’s when it earns its place. Not every job needs it. If yours does, we’ll tell you at the site visit.

3SRM is our Site Specific Soil Revegetation Method. Discovery, analysis, recommendation. We assess the site, test the soil, and build a Stabi-Mulch blend around what your ground actually needs. Difficult soil, strict specs, high failure risk: that’s when it earns its place. Not every job needs it. If yours does, we’ll tell you at the site visit.

Recently Completed

Recently Completed Projects

Recently Completed Projects

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Highway · NZTA


Highway · NZTA

SH50 Expressway

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Highway · NZTA

SH50 Expressway

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Slip Repair · Gisborne


Slip Repair · Gisborne

Gisborne Slip Repairs

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Slip Repair · Gisborne

Gisborne Slip Repairs

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Residential Development

Residential Development

Parklands Subdivision

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Residential Development

Parklands Subdivision

170+

Project Completed

200+ Projects Completed From residential subdivisions to wind farms, expressways, and slip repairs delivered nationwide.

170+

Project Completed

200+ Projects Completed From residential subdivisions to wind farms, expressways, and slip repairs delivered nationwide.

0+

Years of Expertise

22+ Years of Expertise Decades of on the ground experience in erosion control and land stabilisation across NZ's toughest terrain and conditions.

0+

Years of Expertise

22+ Years of Expertise Decades of on the ground experience in erosion control and land stabilisation across NZ's toughest terrain and conditions.

125+

Happy Clients

160+ Clients Nationwide Developers, contractors, engineers, and councils trust Instant Green on their highest-stakes projects across New Zealand.

125+

Happy Clients

160+ Clients Nationwide Developers, contractors, engineers, and councils trust Instant Green on their highest-stakes projects across New Zealand.

125+

Happy Clients

160+ Clients Nationwide Developers, contractors, engineers, and councils trust Instant Green on their highest-stakes projects across New Zealand.

12M+

12 million m2 stabilised and counting

When we say Stabi-Mulch is tried and proven, it is.

12M+

12 million m2 stabilised and counting

When we say Stabi-Mulch is tried & proven, it is.

How We Work

From First call to stabilised site
as fast as 48 hours

We're set up to move at the pace your project needs. Here's exactly what happens when you reach out

01

You Call or Submit a Request

Tell us about your site and we'll take it from there.

01

You Call or Submit a Request

Tell us about your site and we'll take it from there.

02

We Visit Your Site This Week

We assess the area, scope the job, and get eyes on what needs stabilising.

02

We Visit Your Site This Week

We assess the area, scope the job, and get eyes on what needs stabilising.

03

Quote in 24 Hours

You'll have a clear, detailed quote within 24 hours of our site visit.

03

Quote in 24 Hours

You'll have a clear, detailed quote within 24 hours of our site visit.

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Your Regional Rep

Talk to a Specialist
Who Knows Your Area.

Talk to a Specialist
Who Knows Your Area.

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Ashton Currie

North Island

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Ashton Currie


North Island

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Seton Hoyle

North Island

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North Island

Seton Hoyle

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Caleb Holmes

South Island

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Caleb Holmes

South Island

Happy Customers

Trusted on NZ's Biggest Projects

Trusted on NZ's Biggest Projects

5.0

From 50+ project ratings

"I used Instant Green for much of our rehabilitation works on large dump sites and earthworks. We found their service and organisation professional and easy to deal with. While their product is slightly more expensive than alternatives, the outcomes are superior with almost zero rework and faster establishment."

Joe Morrison

Works Manager, Downer NZ

"Instant Green has been providing hydroseeding and dust control services to Pan Pac since 2019. I have always found them to be very professional, setting high standards and work ethic, and always looking for innovative improvements in the products and services they provide. I have no hesitation in recommending Ashton and Instant Green."

Bruce Evans

Forest Engineering advisor, Pan Pac

"As environmental and earthworks manager for the Harapaki Windfarm, this was one of the most challenging projects we have completed — steep and exposed terrain, extreme weather including snow and gale force winds. Of note was their use of locally sourced wooden fibre mulch, Stabi-Mulch, which aligned with our sustainability goals by reducing the carbon footprint of the operation."

Tom Gaddum

Director, Hick Bros

"I have been impressed with Instant Green application rates. When compared with other Hydroseeding we have used before, it has performed well after heavy rainfall events meaning less maintenance and quicker stabilisation of exposed areas."

Stephanie Kirk

Senior Environmental Scientist, Beca

"I used Instant Green for much of our rehabilitation works on large dump sites and earthworks. We found their service and organisation professional and easy to deal with. While their product is slightly more expensive than alternatives, the outcomes are superior with almost zero rework and faster establishment."

Joe Morrison

Works Manager, Downer NZ

"As environmental and earthworks manager for the Harapaki Windfarm, this was one of the most challenging projects we have completed — steep and exposed terrain, extreme weather including snow and gale force winds. Of note was their use of locally sourced wooden fibre mulch, Stabi-Mulch, which aligned with our sustainability goals by reducing the carbon footprint of the operation."

Tom Gaddum

Director, Hick Bros

"I have been impressed with Instant Green application rates. When compared with other Hydroseeding we have used before, it has performed well after heavy rainfall events meaning less maintenance and quicker stabilisation of exposed areas."

Stephanie Kirk

Senior Environmental Scientist, Beca

"Instant Green has been providing hydroseeding and dust control services to Pan Pac since 2019. I have always found them to be very professional, setting high standards and work ethic, and always looking for innovative improvements in the products and services they provide. I have no hesitation in recommending Ashton and Instant Green."

Bruce Evans

Forest Engineering advisor, Pan Pac

"I used Instant Green for much of our rehabilitation works on large dump sites and earthworks. We found their service and organisation professional and easy to deal with. While their product is slightly more expensive than alternatives, the outcomes are superior with almost zero rework and faster establishment."

Joe Morrison

Works Manager, Downer NZ

"As environmental and earthworks manager for the Harapaki Windfarm, this was one of the most challenging projects we have completed — steep and exposed terrain, extreme weather including snow and gale force winds. Of note was their use of locally sourced wooden fibre mulch, Stabi-Mulch, which aligned with our sustainability goals by reducing the carbon footprint of the operation."

Tom Gaddum

Director, Hick Bros

"I have been impressed with Instant Green application rates. When compared with other Hydroseeding we have used before, it has performed well after heavy rainfall events meaning less maintenance and quicker stabilisation of exposed areas."

Stephanie Kirk

Senior Environmental Scientist, Beca

"Instant Green has been providing hydroseeding and dust control services to Pan Pac since 2019. I have always found them to be very professional, setting high standards and work ethic, and always looking for innovative improvements in the products and services they provide. I have no hesitation in recommending Ashton and Instant Green."

Bruce Evans

Forest Engineering advisor, Pan Pac

How can we help you?

Does Stabi-Mulch classify my site as stabilised immediately?

Yes. Under the NZ GD05 hydromulch guideline, your site is classified as stabilised from the moment Stabi-Mulch is applied not contingent on grass strike. This is one of the most significant compliance advantages of the product. Your council consent condition requiring progressive stabilisation is met the day we spray not weeks later when vegetation establishes.

Our consent restricts exposed area how does Stabi-Mulch help us move faster?tee leads or results?

We work with businesses of all sizes—from early-stage startups building their MVP to established brands looking to scale their online presence. Our flexible approach allows us to tailor solutions that align with your specific goals.

What's the difference between Stabi-Mulch and hydroseeding?

We build most of our no-code websites using Webflow and Framer, but we’re flexible and can adapt to platforms like Shopify, Wix, or Squarespace based on your needs.

We've been quoted cheaper options why is Stabi-Mulch worth the difference?

Project timelines vary depending on scope. A landing page may take 1–2 weeks, while full websites or branding projects can take 4–8 weeks. We’ll provide a detailed timeline after the initial discovery call.

Can Stabi-Mulch be specified by name in engineering documents?

Absolutely. we’re happy to collaborate in the way that best complements your team’s workflow. We can jump in as creative partners, support your internal team, or handle everything from concept to execution.

What areas of New Zealand do you cover?

We offer both fixed-price packages for clearly defined projects and hourly rates for flexible or ongoing work. Get in touch for a custom quote tailored to your goals.

How can we help you?

How can we help you?

Still Planning To Drill Seed And Hope?

You might get away with it. Plenty of jobs do.

Until the weather turns. Until the sediment moves. Until the inspector comes back and your staging stays locked for another fortnight. One site visit, one quote, and you'll know exactly what it costs to stop guessing.

You might get away with it. Plenty of jobs do. Until the weather turns. Until the sediment moves. Until the inspector comes back and your staging stays locked for another fortnight. One site visit, one quote, and you'll know exactly what it costs to stop guessing.

Locally made hydromulch, erosion control, revegetation, dust suppression. Nationwide service, proven results.

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© 2026 Instant Green All Right Reserved

Locally made hydromulch, erosion control, revegetation, dust suppression. Nationwide service, proven results.

Linkdin Icon
Linkdin Icon

© 2026 Instant Green All Right Reserved

Locally made hydromulch, erosion control, revegetation, dust suppression. Nationwide service, proven results.

Linkdin Icon
Linkdin Icon

© 2026 Instant Green All Right Reserved