Plagron Power Roots — Organic Root Stimulator for Hand-Fed Growing
Best for: Soil and coco growers wanting to accelerate root development and reduce transplant shock without synthetic additives
Our thoughts
This is a proper organic root stimulator that actually works. Growers report cleaner transplants and faster establishment, which matters when you're scaling up or running tight cycles. Sits nicely in the mid-tier on price, so you're not paying premium brand tax but you're getting consistent results. Worth having on the shelf if you hand-feed.
Plagron Power Roots is an organic root development additive formulated with humic acids, seaweed extract, vitamins, and amino acids to encourage faster, thicker root growth from the vegetative phase through early flowering. It's designed for soil and coco growers who hand-feed, not for closed hydroponic systems. Add it to your watering can and the roots respond — thicker root hairs, more lateral branching, better nutrient uptake, and crucially, less transplant shock when you're moving plants around.
How it compares
Power Roots sits in the organic root stimulator space, competing directly with CANNA Rhizotonic and BioBizz Root Juice.
- Same organic approach as CANNA Bio Rhizotonic, but without the premium pricing
- More nutrient-dense than budget alternatives — you're getting seaweed, humic acid, and vitamin complex working together
- Hand-feeding focused, unlike GH RapidStart or Advanced Nutrients products that dominate hydro systems
- Works brilliantly alongside other Plagron products (Terra, Cocos, Hydro ranges) if you're building a complete system
Not suitable for recirculating hydro systems like NFT or DWC — the organic compounds can clog the works. For those, Plagron makes Hydro Roots instead.
Usage guidance
Dosage
Add 1ml per litre of water (or 4ml per gallon). That's roughly one-fifth of a teaspoon per litre — easy to measure, hard to get wrong.
When to use
Run it through the entire vegetative phase and up to week four of flowering. After that, dial it back or stop — by then the root system is established and the plant's focus shifts.
Best for transplants
Use Power Roots in your watering can when you pot up seedlings or move plants between containers. Growers report virtually zero transplant shock when they do this consistently. It replaces rooting powder nicely and works faster.
Hand-feeding in soil and coco
Mix into your regular feed water every time you water during veg. In coco, this pairs well with a coco-specific base nutrient (Plagron Cocos A+B works cleanly). In soil, it meshes with Terra Grow/Bloom or any balanced soil feed.
Substrate compatibility
Works in any soil or coco setup. Don't use in active hydro systems — stick to hand-fed methods.
Technical specifications
- Product type: Organic root development stimulator
- Key ingredients: Humic acids, seaweed extract, vitamin C, B1, E, amino acids, myoinositol, alpha-tocopherol
- NPK ratio: 1-0-2
- Dosage: 1ml per litre of water
- Available sizes: 250ml, 1L, 5L bottles
- Suitable for: Soil, coco, and inert hand-fed systems
- Not suitable for: Recirculating hydroponic systems (NFT, DWC, etc.)
- Appearance note: Strong herbal smell due to organic composition — completely normal
Who this is for
- Soil and coco growers who hand-feed and want to skip synthetic root powders
- Anyone running regular transplants or doing multiple pot rotations
- Growers building a complete Plagron nutrient system (works seamlessly with Terra, Cocos, and Hydro ranges)
- Budget-conscious cultivators who want proven results without premium brand markup
- Organic-leaning growers who prefer natural inputs across the board
Particularly suited to spaces where hand-feeding is the norm and root establishment directly affects your yield timeline.
Our take
Power Roots does exactly what it claims — you use it, roots respond, transplants stick. It's not fancy, it's not complicated, and it costs less than CANNA's equivalent. The organic formula means it's best suited to hand-fed soil and coco work, not closed systems, so be clear on that before buying. But if that's your setup, it's worth picking up. Good time to buy while clearance stock lasts.
