Root Stimulants
Why your plants need a Root Stimulant
One in week one beats a bloom booster in week eight. Seaweed, amino acids and B vitamins that tell the plant to put its energy into roots while it is still deciding.
Eight on the shelf. Most growers should buy this one and leave the rest.

Canna Rhizotonic
- Over 60 microbiological substances
- Vitamins B1 and B2 drive the plant's own hormones
- Algae based, 100% natural
- Doubles as a seed soak at 40 mL per 10 L
| 250ml | out of stock | $40 |
| 1L | $105/L | $105 |
| 5LBEST VALUE | $72/L | $360 |
It is not a nutrient
Seaweed, amino acids and B vitamins. It is not feeding the plant, it is giving it instructions.
It changes what the plant builds
Energy goes into roots instead of leaves, while the plant is still deciding what to put it into.
The window is transplant to early veg
After that your plant has picked its root size and you are paying for leaves.
The week matters more than the bottle
Everything the plant does for the rest of the run goes through those roots, which is why a stimulant in week one beats a booster in week eight. The same bottle in week six of flower does almost nothing.
A stimulant is not feeding the plant. It is telling it what to work on.
Only worth reading if the pick above is not you.

- Cold pressed Norwegian sea kelp
- Vitamin B complex
- A proprietary seed extraction
- Molasses and microbial inoculants
| 100ml | $550/L | $55 |
| 250ml | $440/L | $110 |
| 500ml | $370/L | $185 |
| 1LBEST VALUE | $320/L | $320 |
- Systemic fungicide, protects against root rot
- Purified humic and fulvic acids
- A range of biostimulants
- Label rates for propagation, veg and flower
| 100ml | $350/L | $35 |
| 250ml | $300/L | $75 |
| 1LBEST VALUE | $234/L | $234 |
| 500mL | $296/L | $148 |

- B1 reduces stress from rapid cell growth
- B2 boosts defence against pathogens
- B6 and B12 support metabolic enzymes
- Added potassium for cell wall strength
| 1L | $60/L | $60 |
| 5L | $49/L | $245 |
| 20LBEST VALUE | $27/L | $539.95 |
All in stock. Price shown is the smallest size.
| Product | Key ingredient | Best for | From |
|---|---|---|---|
| Canna Rhizotonic | Over 60 microbiological substances | Cuttings, transplants, early veg. The safe pick. | $105 |
| House & Garden Roots Excelurator | Cold pressed Norwegian sea kelp | Anyone who has had brown root before. | $55 |
| Professor's Go Roots | Systemic fungicide, protects against root rot | Fighting root rot, not just chasing growth. | $35 |
| Atami Rootbastic High NPK Root Stimulator | High NPK for a root stimulant | Stimulant and early feed in one bottle. Very concentrated. | $63 |
| Advanced Nutrients B-52 | B vitamin complex, B1 led | Running all the way through grow and bloom. | $75 |
| Green Planet Vitathrive | B1 reduces stress from rapid cell growth | Propagation and the first weeks of veg. | $60 |
| GT ROOTZONE | Marine and plant extracts | One bottle in the res from day one to chop. | $26 |
| Total Horticulture Concentration B-52 | Balanced blend of B+ vitamins | Running B vitamins in volume without paying for the label. | $53 |
| Green Planet Root Builder | Bacillus licheniformis, breaks elements down | Stacking on top of a stimulant, not replacing one. | $40 |
How much do I use?
Can I run two stimulants at once?
I am in week three of flower, too late?
Microbes
The other half of the job. A stimulant builds roots, a microbe extends their reach.
See the microbe rangeCal-Mag
New root growth pulls calcium hard, and coco under LED runs short first.
See the cal-mag rangeSilica
Roots build the plant. Silica is what lets the stem hold what the roots grew.
See the silica rangeGet it in while it still counts
Once the plant has picked its root size you are paying for leaves. All in stock, ships today.
Happy Hydroponics, 1/35 Gwen Road, Cranbourne West VIC 3977 ยท Mon to Sat 9:30am to 5:30pm
