Dr Greenthumbs Root Roids (Root Health & Plant Support)

Root Roids is loaded with beneficial microbes — like mycorrhizal fungi and nutrient-solubilizing bacteria — that form a symbiotic relationship with your plant’s roots. This massively increases the root surface area, boosts nutrient and water uptake, and improves resistance to stress and disease. Think of it as a probiotic for your plants — supercharging growth, root development, and overall plant health.

Yes! Root Roids works beautifully in soil, coco coir, compost mixes, and even hydroponic systems. The application method changes slightly depending on your setup, but it’s designed to complement all types of media — not replace them.

Absolutely. Root Roids is a biological additive, not a standalone fertilizer. It doesn’t supply enough N-P-K nutrients on its own. Keep using your regular feed schedule — Root Roids will make those nutrients more available and effective.

Yes! Many growers find their plants hit maturity about a week faster. By boosting root development early, plants grow more vigorously, which can shave 7–10 days off your veg time and get you flowering sooner.

It’s super easy:

• Soil or Coco: Mix ½ to 1 scoop per litre of water. Apply once a week.
• Hydroponics: ½ scoop per litre every two weeks.
• Organic Living Soil: ½ to 1 scoop per litre weekly.
• Seedlings & Clones: ¼ scoop per litre once roots form.
• Foliar Spray (optional): ½ scoop per litre every two weeks, applied at night.

Pre-moisten your soil before applying so the solution spreads evenly. Avoid excessive runoff to get the most out of each dose.

Yes — stop using Root Roids about a week before your final flush to avoid wasting product. Also, adjust your nutrient pH before adding Root Roids. It may slightly raise the pH, but that balances out in the root zone.

Hydro growers often see a 15–25% reduction in fertilizer use because the microbes make nutrients more available. Root Roids also outcompetes harmful organisms, keeps the root zone healthy, and leads to more robust roots, better flower quality, and higher yields.

Many growers see noticeable differences — like perkier leaves and new root growth — within 48 hours of the first dose. Weekly use builds on that effect over time.

Yes, but use it carefully. Because it contains organic extracts, it can leave light brown stains if over-sprayed on some surfaces. Always spray at night or with lights off, let plants dry for 10 hours, and wipe up any overspray promptly.

100%! Root Roids is 100% natural and safe for vegetables, herbs, fruit trees, ornamentals, houseplants, and even phosphorus-sensitive natives. It won’t burn plants and actually enhances flavor, nutrition, and resilience in edibles.

Definitely. Just use a lighter dose — ¼ scoop per litre — to soak your seedling trays or cuttings. Introducing microbes early helps roots establish faster and improves transplant success.

Watering it in is most effective because it distributes microbes evenly. You can sprinkle a bit into transplant holes too. If you prefer a dry-mix option, try our Root Roids Granules (blue packet), which is made for mixing into soil.

Yes! It’s fully compatible with enzymes, microbial products, bloom boosters, and more. Just avoid strong sterilizers like hydrogen peroxide or UV filters, as those can kill the beneficial microbes.

• Black Packet: Fine powder with fungi, bacteria, kelp, amino acids, and more. Water-soluble and applied weekly. Not suitable for direct root contact on ALL plants, best mixed with water to the instructions specs.
• Blue Packet (Granular): Pure mycorrhizal inoculant in granular form. Applied dry once at planting or top-dressed throughout the seasons.
• Shake (Shaker Bottle): A transplant booster dusted directly onto roots without the risk of burn.

You don’t need all three — choose the one that fits your style. Most growers prefer the black powder for its all-around benefits.

Yes! Root Roids is extremely concentrated, with hundreds of thousands of active spores per gram. That’s why you only need about ½ to 1 teaspoon per litre — more isn’t necessary and just wastes product.

One level scoop is about 4–5 grams, or roughly a teaspoon. That’s enough for 1 litre of water at the standard dose.

It may raise the pH of your water slightly, but it won’t affect soil pH in a meaningful way. Adjust your nutrient solution’s pH first, then add Root Roids. The microbes also help stabilize root zone pH over time. The ingredients causing this pH rise in your water is the humic acids and kelp extracts.

Yes. Beneficial fungi and bacteria in Root Roids can help suppress pathogens that cause root rot and other diseases.

Absolutely. By improving root function, Root Roids reduces transplant shock and helps plants handle drought and heat stress more effectively. It’s especially useful for young plants and during harsh growing conditions.

Root Roids stays potent for about 12 months after opening. Keep it in a cool, dry, dark place, sealed tightly, and away from moisture and heat. Unopened, it can last 18 months.

We offer a 30-Day Money-Back Guarantee. If you’re not happy with the results, return it (with at least half the contents remaining) within 30 days for a full refund. We’re confident you’ll love it — but we want you to feel confident too.

Root Roids is safe and non-toxic. It’s just beneficial microbes and organic materials. As with any fine powder, avoid inhaling dust, wash your hands after use, and wear gloves or a mask if you’re sensitive. It can stain clothes slightly, so shake off any spills before washing.