Dr Greenthumbs Organic Gardening > Microbes & Inoculants Sample - Makes 5L Dr Greenthumbs Root Roids (Root Health & Plant Support)
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Dr Greenthumbs Organic Gardening > Microbes & Inoculants Sample - Makes 5L Dr Greenthumbs Root Roids (Root Health & Plant Support)
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EMPTY DOM REMOVE PROTECTOR

Root Roids Free Sachet

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Dr Greenthumbs
Size: Makes 5L
Price:
$0.00 $5.00
EMPTY DOM REMOVE PROTECTOR
EMPTY DOM REMOVE PROTECTOR
EMPTY DOM REMOVE PROTECTOR

Pickup available at Bellambi

Usually ready in 24 hours

Application Guide and Usage Calculator

Simple to Mix. Easy to Apply.

Root Roids is designed to deliver beneficial biology directly to the root zone — where it matters most. Whether you're planting seedlings, repotting indoor plants, establishing fruit trees or maintaining an established garden, applying Root Roids at the right time helps create the ideal biological foundation for healthy root development.

Every pack includes a 5ml measuring scoop, equal to 1 teaspoon, for accurate mixing.

Root Roids Usage Calculator

Work out how much Root Roids to mix for your garden.

Choose how you're using Root Roids, enter the number of plants or pot size, and the calculator will estimate how much prepared solution and product you need.

Estimate based on 20–50ml of prepared solution per individual seedling.

Your Mixing Estimate

200–500ml
Prepared solution needed
0.1–0.25 scoop
Root Roids to mix
Approx. 0.38–0.94g
Approximate product used
At 2nd or 3rd true leaves
Suggested timing
Apply 20–50ml of prepared solution around the base of each seedling. Ensure the growing media is evenly moistened and avoid wetting young foliage wherever possible.
Estimates are based on the usage guide. Approximate grams are calculated from the stated pack-yield guidance; use the included scoop for measuring. Mix with fresh, clean water and use the prepared solution within 12 hours.

One Pack Goes Further Than You Think

75g
Makes approximately
20–40L
of prepared solution
225g
Makes approximately
60–120L
of prepared solution
1kg
Makes approximately
250–500L
of prepared solution

The amount of solution produced depends on the application rate you choose.

Best Practice

Always mix Root Roids with fresh, clean water and use the prepared solution within 12 hours. Because Root Roids contains living biological ingredients, mix only the amount required for each application.

Description

Root Roids®

The Original Root Roids™ – The Complete Biological Root Health Formula

Everything starts at the roots.

Healthy plants don't begin with bigger leaves or stronger stems. They begin below the surface.

Whether you're planting vegetables, repotting an indoor plant, establishing a fruit tree or growing for maximum performance, the health of your roots determines everything that follows.

That's why we created Root Roids.

Launched in 2017 and proudly formulated in Wollongong, Australia, Root Roids is our original flagship formula — the product that started the Root Roids range and continues to set the benchmark for biological root health.

Unlike single-ingredient inoculants, Root Roids combines beneficial soil fungi, beneficial bacteria and premium organic biostimulants into one complete biological formula designed to help plants establish faster, develop stronger root systems and thrive from the ground up.

Because when roots are healthier, everything above the soil has the opportunity to perform at its best.

Why Gardeners Choose Root Roids

Plants experience their greatest stress during life's biggest transitions.

Planting

Give new plants biological root-zone support from day one.

Repotting

Help indoor plants and potted plants settle into fresh growing media.

Transplanting

Support plants through one of the most stressful stages of growth.

Establishing seedlings

Apply beneficial biology where young roots are starting to develop.

Moving indoors or outdoors

Help plants adjust when conditions, containers or growing environments change.

Seasonal Changes

Help gardens transition through seasonal changes for a strong start in spring.

Every one of these moments places enormous pressure on developing roots.

Root Roids helps support plants when it matters most by introducing beneficial biology directly where new roots need it.

Applied at the root zone, Root Roids helps create the ideal biological environment for healthier root development, improved nutrient and water uptake, and stronger establishment from day one.

Whether you're growing tomatoes in your backyard, repotting your favourite Monstera, planting citrus trees or managing a living soil garden, Root Roids helps give every plant the strongest possible start.

Why Root Roids Is Different

Many biological products stop at mycorrhizae.

Others focus only on beneficial bacteria.

Root Roids was designed differently.

From the very beginning, our goal was to create one complete biological formula that supports the entire root zone, not just one part of it.

That's why every packet contains a carefully balanced consortium of beneficial root biology, beneficial bacteria and premium organic ingredients that work together to create an ideal environment for microbial activity and healthy root development.

Rather than asking gardeners to purchase multiple separate additives, Root Roids delivers a complete biological foundation in one easy-to-use product.

It isn't simply another inoculant. It's the original Complete Biological Root Health Formula.

How Root Roids Works

Three Layers of Biological Root Health

Root Roids brings together three key layers of root-zone support in one complete formula.

1. Beneficial Soil Fungi

Powered by carefully selected mycorrhizal fungi, Root Roids forms beneficial relationships with plant roots to support nutrient and water uptake while encouraging healthy root development.

These fungi help plants establish stronger underground networks that can improve resilience and long-term performance.

2. Beneficial Biology

Root Roids also contains carefully selected beneficial microorganisms including Bacillus subtilis, Trichoderma harzianum and Beauveria bassiana.

Together they help create a healthier biological environment around developing roots while supporting vigorous plant growth.

3. Organic Biological Nutrition

Great biology also needs the right environment to thrive.

That's why Root Roids includes organic humic acid, fulvic acid, kelp extract, cold water algae extract, amino acids and organic carbohydrate sources.

These premium natural ingredients help support microbial activity while contributing to a healthier, more active root zone.

Together these three biological layers create the Complete Biological Root Health Formula that has made Root Roids the flagship of the Root Roids range.

Why Stronger Roots Change Everything

Every gardener sees what happens above the soil.

  • Greener leaves
  • Stronger stems
  • Bigger harvests
  • More flowers
  • Healthier growth

But the real work happens below the surface.

Healthy roots are responsible for anchoring plants, absorbing water, accessing nutrients and building the foundation for vigorous growth. When roots establish quickly, plants spend less time recovering from transplanting and more time growing.

That's why Root Roids focuses on what matters most — the root zone.

By introducing our microbial ecosystem and premium organic biostimulants directly where roots need them most, Root Roids helps create the biological conditions that encourage healthier root development from the very beginning.

Because stronger plants don't happen by accident. They start at the roots.

Gardens and Plants You Can Use It On

Designed for Every Kind of Gardener

Whether you're planting your very first seedling or managing a mature living soil garden, Root Roids fits naturally into almost every growing style.

Backyard Gardens

Give vegetables, herbs and ornamentals the strongest possible start while supporting healthy root development throughout the growing season.

Indoor Plants

Repot with confidence. Root Roids helps support healthy root establishment when moving houseplants into fresh potting mix.

Vegetable Gardens

Tomatoes, chillies, lettuce, herbs, pumpkins, cucumbers and everything in between all rely on healthy roots to produce vigorous growth and abundant harvests.

Fruit Trees & Citrus

Help young trees establish quickly after planting while encouraging healthy root development that supports long-term growth.

Seedlings & Cuttings

The first few weeks are often the most important. Applying Root Roids directly to developing roots helps support strong early establishment.

Hydroponics & Coco

Designed for modern growers looking to introduce beneficial biology into their root zone while supporting vigorous root development.

Living Soil & Organic Gardens

Root Roids complements composts, quality soils and organic growing practices by introducing beneficial microorganisms alongside premium organic biostimulants.

Find Your Garden

One Formula. Every Garden.

No matter what you grow, healthy roots are the foundation of stronger, healthier plants. Root Roids is designed to fit naturally into every gardening style, making it easy to support biological root health all year round.

Garden Type Recommended Use
🌳 Fruit Trees & Citrus Apply at the change of each season and during periods of environmental stress to support healthy root activity and year-round resilience.
🌹 Roses Apply at the change of each season and during periods of heat, cold or other stressful growing conditions to support healthy establishment and vigorous growth.
🪴 Indoor Plants Apply every 30 days or whenever plants are repotted or experiencing stressful growing conditions to help maintain a healthy biological root zone.
💧 Hydroponics & Coco When growing in fully inert media, apply every 7–10 days until approximately three weeks before harvest to maintain beneficial root biology.
🌿 Native & Ornamental Plants Apply seasonally and during environmental stress to encourage healthy root development and resilient plant growth.
🌱 Seedlings & Propagation Apply as a root drench once the second set of true leaves has developed. Reapply at transplant to support healthy establishment. Avoid applying directly to young foliage.
🥕 Vegetable Gardens & Organic Growing Apply at the change of each season and during periods of environmental stress to support beneficial soil biology and healthy root development.
🌼 Balcony, Pots & Container Gardens Apply seasonally and during hot, dry or stressful conditions to help maintain healthy roots in restricted growing media.

When Plants Need It Most

While Root Roids can be used throughout the growing season, there are key moments where biological root support makes the biggest difference.

🌱 Planting new seedlings

Support young roots as they settle into their new growing space.

🌿 Repotting indoor plants

Help houseplants recover and establish after moving into fresh potting mix.

🌳 Establishing fruit trees

Support young trees while they build the root system needed for long-term growth.

🌼 Planting ornamentals

Give ornamental plants root-zone support during planting and establishment.

🌹 Refreshing roses

Support rose roots during seasonal change, pruning, feeding and stressful weather.

🌾 Seasonal garden changeovers

Help gardens transition into a new season with stronger biological root-zone support.

☀️ Heatwaves and drought

Support roots when plants are working hard through hot, dry and stressful conditions.

❄️ Cold snaps and frost recovery

Help plants recover and rebuild after cold weather slows growth and root activity.

🌧️ Recovery after storms or adverse weather

Support plants as they bounce back from rough weather and environmental stress.

🚚 Transplanting established plants

Help reduce the setback that can come with moving established plants.

🌿 Propagating cuttings

Support new root development during the early establishment phase.

🌱 Root-zone recovery

Use when roots are working hardest to establish, recover and adapt to new conditions.

These are the moments when roots are working hardest to establish, recover and adapt to new conditions.

Why Gardeners Keep Coming Back

Root Roids wasn't created to be another bottle on the shelf.

It was developed to become the biological foundation gardeners reach for every time they plant.

Customers consistently tell us they notice:

  • ✔ Faster establishment after transplanting
  • ✔ Stronger, healthier root systems
  • ✔ More vigorous plant growth
  • ✔ Happier plants after repotting
  • ✔ Greater confidence when planting valuable trees and indoor plants
  • ✔ A product that becomes part of every grow

For many gardeners, Root Roids isn't something they try once. It's something they refuse to garden without.

Ingredients and the Science Behind Root Roids

The Science Made Simple

Beneficial soil fungi and microorganisms naturally form partnerships with plant roots.

As roots begin growing through the soil, these fungi colonise the root zone, extending the plant's natural ability to explore the surrounding growing media for water and nutrients.

Root Roids also introduces beneficial bacteria that help create a biologically active rhizosphere — the narrow zone surrounding plant roots where much of the important biological activity takes place.

To support this living ecosystem, we've included carefully selected organic biostimulants including humic acid, fulvic acid, kelp extract, cold water algae extract, amino acids and organic carbohydrate sources.

The result is a complete biological formula designed to support healthy root establishment rather than simply feeding the plant from above.

Premium Ingredients. Purposefully Selected.

Unlike many microbial inoculants that rely on a single ingredient, Root Roids combines multiple biological technologies into one complete formulation.

Beneficial Soil Fungi

Rhizophagus irregularis
Glomus mosseae
Glomus etunicatum
Glomus aggregatum

These mycorrhizal fungi form beneficial relationships with plant roots that support nutrient and water uptake while encouraging healthy root development.

Beneficial Biology

Bacillus subtilis
Trichoderma harzianum
Beauveria bassiana

These carefully selected microorganisms contribute to a healthy, biologically active root zone and complement the mycorrhizal fungi within the formula.

Organic Biostimulants

Humic Acid
Fulvic Acid
9 Amino Acids
Kelp Extract
Cold Water Algae Extract
Organic Carbohydrates

These natural ingredients help create an ideal environment for beneficial biology while supporting healthy plant establishment.

Why Root Roids Is More Than a Mycorrhizal Inoculant

Calling Root Roids "just a mycorrhizal product" doesn't tell the whole story.

It isn't simply fungi.

It isn't simply beneficial bacteria.

It isn't simply a plant stimulant.

It's a complete biological root health formula.

Every ingredient has been selected to perform a specific role within the root zone, creating an environment where beneficial biology can thrive while supporting healthier, more resilient plants.

That's what has made Root Roids the flagship of the Root Roids range since 2017.

Application Guide and Usage Calculator

Simple to Mix. Easy to Apply.

Root Roids is designed to deliver beneficial biology directly to the root zone — where it matters most. Whether you're planting seedlings, repotting indoor plants, establishing fruit trees or maintaining an established garden, applying Root Roids at the right time helps create the ideal biological foundation for healthy root development.

Every pack includes a 5ml measuring scoop, equal to 1 teaspoon, for accurate mixing.

Root Roids Usage Calculator

Work out how much Root Roids to mix for your garden.

Choose how you're using Root Roids, enter the number of plants or pot size, and the calculator will estimate how much prepared solution and product you need.

Enter the number of seedlings or plants you want to treat.

Your Mixing Estimate

0.5–1L
Prepared solution needed
0.25–0.5 scoop
Root Roids to mix
Approx. 0.9–1.9g
Approximate product used
At 2nd or 3rd true leaves
Suggested timing
Apply evenly as a soil drench to seedling trays, ensuring the growing media is thoroughly moistened. Avoid wetting young foliage wherever possible.
Estimates are based on the usage guide. Approximate grams are calculated from the stated pack-yield guidance; use the included scoop for measuring. Mix with fresh, clean water and use the prepared solution within 12 hours.

One Pack Goes Further Than You Think

75g
Makes approximately
20–40L
of prepared solution
225g
Makes approximately
60–120L
of prepared solution
1kg
Makes approximately
250–500L
of prepared solution

The amount of solution produced depends on the application rate you choose.

Best Practice

Always mix Root Roids with fresh, clean water and use the prepared solution within 12 hours. Because Root Roids contains living biological ingredients, mix only the amount required for each application.

Recommended Application Rates

🌱 Seedlings

Help young plants establish strong, healthy root systems from the very beginning.

Mix Rate

½ scoop / 2.5ml per litre of water

When to Apply

When seedlings have developed their second or third true leaves.

How to Apply

Apply evenly as a soil drench to seedling trays, ensuring the growing media is thoroughly moistened. Avoid wetting young foliage wherever possible.

🌿 Transplants & Potting Up

The ideal time to introduce beneficial biology is when plants are establishing new roots.

Mix Rate

½–1 scoop / 2.5–5ml per litre of water

Recommended Application Volume Per Transplant

Plant Size Apply
Plug seedlings 20–50ml per plant
50–100mm pots 100–200ml per plant
150–300mm pots 200–500ml per plant

Apply the solution directly around the root ball to ensure maximum contact with actively growing roots.

Root Roids works best when the root zone is thoroughly treated. Applying more than the recommended volume won't harm your plants, but once the root zone has been adequately treated, additional product is unlikely to provide further benefit.

🪴 Existing Potted Plants

Support healthy biological activity throughout the growing season.

Mix Rate

1 scoop / 5ml per litre of water

Apply evenly around the root zone until the potting media is thoroughly moistened.

🌼 Containers, Pots & Raised Planters

Container-grown plants rely heavily on healthy root systems due to their restricted growing environment.

150ml of prepared solution per 5 litres of potting mix
25–30L containers: 750ml–1L prepared solution

Apply evenly around the root zone so the solution moves through the growing media where roots are actively growing.

🌳 Garden Beds, Trees & Landscape Plants

Encourage healthy root development and biological activity throughout the season.

1–2 litres around the base of each plant
Use up to 5 litres for mature plants
Reapply every two months for ongoing support

Apply the prepared Root Roids solution evenly around the base of each plant, ensuring the solution reaches the active root zone. For ongoing biological support, reapply every two months alongside your regular fertiliser program.

🌿 Plants Recovering From Stress

Plants affected by transplant stress, environmental extremes or poor establishment can benefit from more frequent applications.

Apply every two weeks until healthy growth resumes

Please note: Root Roids is designed to support biological root health and healthy plant establishment. It is not intended to treat severe root diseases or advanced root rot.

💧 Hydroponics & Inert Growing Media

When growing in inert media such as coco or rockwool, regular reapplication helps maintain beneficial biological activity around the root zone.

Mix Rate

½–1 scoop / 2.5–5ml per litre of water
Apply every 7–10 days

Apply throughout active vegetative growth and early flowering.

It is best to hand water Root Roids rather than adding it directly to your reservoir.

Adjust your nutrient solution pH before adding Root Roids. Do not chase the pH reading after Root Roids has been added.

Discontinue use approximately three weeks before harvest.

Best Practice for Maximum Results

Root Roids® is most effective when applied directly where roots are actively growing.

If applying to dry potting mix or garden soil, lightly moisten the growing media first. This allows the solution to penetrate evenly into the root zone rather than running down the inside of the container.

The closer the beneficial biology is placed to actively growing roots, the greater the opportunity for successful colonisation and long-term biological activity.

💡 Root Roids Pro Tip

Healthy roots don't need more product — they need better placement.

Always apply Root Roids directly to the root zone during planting, transplanting or repotting. Introducing beneficial biology where roots first establish gives plants the greatest opportunity to develop a healthy, resilient underground ecosystem from day one.

Product Specifications and Suitable Uses

Made in Australia

Proudly formulated and manufactured in Wollongong, NSW.

Shelf Life

12 months after opening when stored correctly.

Organic Ingredients

Formulated using 100% organic-based ingredients.

Non-GMO Ingredients

Made using non-GMO ingredients.

Safe for Edible Gardens

Suitable for use around edible plants when used as directed.

Pet Safety

Store securely and keep away from pets.

Suitable For All Types of Gardeners

Vegetables
Herbs
Fruit Trees
Citrus
Indoor Plants
Ornamentals
Native Plants*
Seedlings
Cuttings
Soil
Coco
Hydroponics

*Always trial on sensitive species first and follow application directions.

Frequently Asked Questions
Is Root Roids a fertiliser?

No. Root Roids is a biological root health formula, not a fertiliser. It works alongside your existing fertiliser or nutrient program by supporting the biology surrounding plant roots.

Is it only for hydroponics?

Not at all. Root Roids is suitable for backyard gardens, vegetables, fruit trees, indoor plants, pots, raised beds, coco, living soil and hydroponic growing systems.

Can I use Root Roids when repotting indoor plants?

Yes. Repotting is one of the best times to use Root Roids, as applying it directly to the root zone helps introduce beneficial biology where new roots will establish.

Is it safe for seedlings?

Yes. Applying Root Roids during planting helps support healthy early root establishment for seedlings and young plants.

Can I use it with fertilisers?

Absolutely. Root Roids is designed to complement quality fertiliser programs, composts and organic growing systems — not replace them.

Why choose Root Roids over simpler inoculants?

Root Roids combines beneficial soil fungi, beneficial bacteria and premium organic biostimulants in one complete formula. Rather than relying on a single biological component, it provides comprehensive support for the root zone through a carefully balanced consortium of microorganisms and organic inputs.

Everything Starts at the Roots

Every thriving vegetable garden.

Every flourishing indoor plant.

Every productive fruit tree.

Every healthy seedling.

Every successful transplant.

They all have one thing in common.

Healthy roots.

Since 2017, Root Roids has helped Australian gardeners and growers build stronger plants from the ground up through the power of beneficial soil fungi, beneficial bacteria and premium organic biostimulants.

Whether you're planting your first herb, establishing an orchard or fine-tuning a high-performance grow, Root Roids gives your plants the complete biological foundation they need to establish faster, grow stronger and thrive naturally.

The Original Root Roids™. The Complete Biological Root Health Formula.

 

Watch Root Roids in Action!

Frequently Asked Questions

What is Root Roids and what does it do?

Root Roids is a microbe-packed root inoculant with mycorrhizae, Bacillus, and Trichoderma. It boosts root growth, improves nutrient uptake, and helps plants bounce back from transplant shock or stress. It’s not a fertiliser—it’s biology that makes your nutrient program work harder.

Which plants and grow styles is Root Roids best for?

Root Roids works in soil, coco, and hydro, and it suits most plant types—vegetables, herbs, ornamentals, and edibles. Avoid in heavy-sterile systems. Brassicas may show limited benefit due to low mycorrhizal response.

When should I start using Root Roids?

Start as early as possible—at seedling, cutting, transplant, or first pot-up. Root contact is key, so apply directly to the root zone or media. For single-use growers, transplant time is the highest-impact moment.

How much Root Roids do I use, and how often?

Use ½–1 scoop per litre weekly in soil or coco, or ½ scoop per litre fortnightly in hydro. For seedlings, go lighter (¼ scoop per litre). Water it in well so microbes reach the roots. Stop in coco one week before flush.

Can I foliar spray Root Roids?

Yes—mix ½ scoop per litre and spray at night to reduce leaf stress. Avoid spraying near walls or porous surfaces, as it may stain. Foliar is optional; root application is more important.

Can I use Root Roids in hydro or irrigation systems?

Yes, but clean systems are essential. In hydro or autopots, don’t let Root Roids sit warm for days. Keep tanks small and fresh, use filters, and maintain flow to avoid clogging or biofilm buildup.

What can I mix with Root Roids?

Root Roids plays well with most base nutrients and compost teas. It already includes mycorrhizae, Trichoderma, and Bacillus, so extra additives are usually unnecessary. Avoid using it alongside sterilants like peroxide or heavy fungicides.

Does Root Roids really help with growth or recovery?

Yes—users often see faster transplant recovery, better root mass, and improved growth within 1–3 weeks. It can help reduce nutrient lockout, drought stress, and even cut fertiliser needs over time (if adjusted slowly).

How should I store Root Roids?

Store Root Roids sealed, cool, and dry. Don’t let moisture into the bag—clumping reduces quality. Avoid scooping with wet tools and keep it out of the sun to preserve microbial viability.

Is Root Roids safe to use around pets, kids, or food crops?

Yes—Root Roids is commonly used on food gardens. Just apply responsibly: store safely, water it in after application, wash hands, and don’t inhale dust. Wash edible produce as usual before eating.

Watch the Root Roids Journey

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