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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
Dr Greenthumbs Root Roids is Australia's favourite rootzone biostimulant & growth enhancer created with 100% Organic & Living ingredients!
Watch our video below & check our our 5 star reviews!
Root Roids is a premium combination of Mycorrhizae & Nutrient Solubilizing Bacteria, manufactured and formulated in Australia by Dr Greenthumbs in Wollongong, NSW.
Create massive colonies of Living Soil microorganisms directly in your root zone with our highly targeted Mycorrhizae & beneficial bacteria.
Designed to compliment any nutrient program to increase yields and flavor. Perfect for Coco & Soil growers. This is Australia's answer to Mykos!
Naturally unlock & retain nutrients for longer, leading to stronger plants, faster growth rates & masses of healthy roots.
Growers are reporting 7-10 days shortening of the vegetative growth period due to massive increases in plant growth and vigor.
Hydroponic growers can enjoy a 15-25% reduction in fertilizer costs whilst growing far superior quality flower.
Noticeable results in just 48hrs
30 Day Money Back Guarantee! If you are not satisfied with the product, return it to us with at least 50% of its contents for a full refund of your product price!
How To Use
Indoor Applications
Coco Coir / Soil Less Media - Use ½ to 1 scoop per liter of water. Use weekly throughout the vegetative & flowering stages for best results.
Organic Soil - Use ½ to 1 scoop per liter of water. Use weekly throughout the vegetative & flowering stages for best results.
Hydroponic / Water Cultivation - Use ½ scoop per liter of water. Use fortnightly for best results. For best results use in agitated/active systems. If using passive hydroponics, replace the solution with fresh water after 48hrs.
Propagation - Use 1/4 scoop per liter of water & drench your growing media thoroughly. Repeat when the first signs of roots appear.
Foliar Spray - Use ½ scoop per liter of water. Spray plants at night & allow to rest 10 hours. Use fortnightly for best results. May stain some surfaces.
If growing in Coco stop using Root Roids 1 week before your flush period. When mixing with nutrient solutions, add Root Roids last & after you have pH adjusted your tank. Your waters pH will raise slightly but this does not need to be corrected & will buffer once applied to the root zone.
What are the key ingredients in Root Roids and how do they benefit plant growth?
Root Roids is a blend of Mycorrhizae and Nutrient Solubilizing Bacteria, which create colonies of living soil microorganisms in the root zone. This enhances nutrient absorption, leading to faster growth rates, stronger plants, and a healthier root system.
Can Root Roids be used with any type of growing media?
Yes, Root Roids is designed for use with various growing media. It’s perfect for Coco and Soil growers, and can also be used in Hydroponic/Water Cultivation and Organic Soil. The application method varies slightly depending on the media.
How does Root Roids affect the vegetative growth period of plants?
Growers have reported a 7-10 day reduction in the vegetative growth period with Root Roids. This is due to the product’s ability to significantly increase plant growth and vigor.
Are there any special instructions for using Root Roids in Coco Coir?
When growing in Coco Coir, it’s recommended to stop using Root Roids one week before the flush period. Additionally, Root Roids should be added last when mixing with nutrient solutions, after pH adjustment of the tank.
How should Root Roids be applied for the best results?
For Coco Coir/Soil Less Media and Organic Soil, use ½ to 1 scoop per liter of water weekly throughout the vegetative and flowering stages. In Hydroponic systems, use ½ scoop per liter of water fortnightly. For propagation, use 1/4 scoop per liter of water, and as a foliar spray, use ½ scoop per liter of water fortnightly.
What are the specific benefits for hydroponic growers using Root Roids?
Hydroponic growers using Root Roids can experience a 15-25% reduction in fertilizer costs. Additionally, it helps in growing superior quality flowers and eliminates detrimental organisms in the root zone, enhancing overall plant health.
How quickly can results be seen after using Root Roids?
Noticeable results from using Root Roids can be seen as quickly as within 48 hours. This rapid response indicates the efficiency of the product in enhancing root growth and nutrient uptake.
Is there any risk of staining when using Root Roids as a foliar spray?
Yes, when using Root Roids as a foliar spray, there is a possibility that it may stain some surfaces. It’s recommended to spray plants at night and allow them to rest for 10 hours, using ½ scoop per liter of water and applying it fortnightly for best results.
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.
Been using this along with root roids in my own diy seedling and potting mix. Love that it doesn't have the stink of seasol but has increased success rates when transplanting and root growth of my seedlings!
Thanks Damien! Love hearing the Ocean Grown and Root Roids combo is working so well in your DIY mixes. Stoked you're getting better transplant success and stronger root growth, and we're glad you're enjoying all the benefits without the smell! Cheers for the awesome feedback and happy growing! 🌱🙌
C
Chauval Richardson
Root roids?????
Bit early in the trial ,but so far results look promising, big improvement with development of root structure.... happy with results....big up green thumb.🤪
Thanks Chauval! 😄 Love hearing Root Roids is already making a difference. It's still early days, but a stronger root system is a great sign! We can't wait to hear how everything looks in a few more weeks. Cheers for the awesome feedback and happy growing! 🌱🙌
D
Dilster
Rootroids work
Started with a sampler pack of 3. Worked so well with my newly sprouted parsley I’ve now bought more. Put some in my bulb lasagne and waiting for spring to get some cuttings going with rootroids in the mix
Have now bought a whole heap of other products from Dr Greenthumbs.
Thanks legend! Love hearing Root Roids turned that sampler pack into a full collection! 🌱 Awesome to hear your parsley is thriving, and fingers crossed for a cracking spring with your bulb lasagne and cuttings. Really appreciate you coming back for more and giving so many of our products a go. Happy growing! 🙌
m
michele winsor
Amazing TurboDirt
I was a bit sceptical about the huge claims made, but it really is amazing how much better it is than any potting mix and Dr Greenthumbs is a delight to deal with
Thanks Michele! Love hearing TurboDirt turned a bit of scepticism into a happy customer! Stoked it's lived up to the hype and that you've enjoyed dealing with the team as well. Really appreciate your support! 🙌
m
mark
root roid boost
this is excellent like all the root roid amendments works brilliantly and truly simple to use. Plants just love it huge leaves and thick stems and masses of roots. Laughing. Cheers happy growing.
Thanks Mark! Love hearing you're getting such awesome results with Root Roids Boost! Huge leaves, thick stems and masses of roots is exactly what we like to hear. Cheers for the awesome feedback mate, happy growing! 💪🙌
Been using this along with root roids in my own diy seedling and potting mix. Love that it doesn't have the stink of seasol but has increased success rates when transplanting and root growth of my seedlings!
Thanks Damien! Love hearing the Ocean Grown and Root Roids combo is working so well in your DIY mixes. Stoked you're getting better transplant success and stronger root growth, and we're glad you're enjoying all the benefits without the smell! Cheers for the awesome feedback and happy growing! 🌱🙌
Bit early in the trial ,but so far results look promising, big improvement with development of root structure.... happy with results....big up green thumb.🤪
Thanks Chauval! 😄 Love hearing Root Roids is already making a difference. It's still early days, but a stronger root system is a great sign! We can't wait to hear how everything looks in a few more weeks. Cheers for the awesome feedback and happy growing! 🌱🙌
Not much more to say quality product that saves alot of time and money
Thanks legend! Short and sweet, we love it! Stoked to hear the Super Soil Nutrient Kit is saving you time and money while delivering the goods. Thanks for the awesome feedback and happy growing! 🌱🙌
Started with a sampler pack of 3. Worked so well with my newly sprouted parsley I’ve now bought more. Put some in my bulb lasagne and waiting for spring to get some cuttings going with rootroids in the mix
Have now bought a whole heap of other products from Dr Greenthumbs.
Thanks legend! Love hearing Root Roids turned that sampler pack into a full collection! 🌱 Awesome to hear your parsley is thriving, and fingers crossed for a cracking spring with your bulb lasagne and cuttings. Really appreciate you coming back for more and giving so many of our products a go. Happy growing! 🙌
Thanks Wayne! Really appreciate the kind words. Stoked to hear you're happy with both the products and the service. Thanks for the support and happy growing! 🌱🙌
