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Canna Rhizotonic 0.25l
CANNA Rhizotonic 0.25 L is a natural root stimulant built on a concentrated extract of the North Atlantic seaweed Ascophyllum nodosum. It delivers organic matter, vitamins and minerals straight to the root zone, so cuttings, seedlings and freshly repotted plants establish a branched root system faster and shrug off heat or drought stress more easily. The formula suits every substrate, from peat mixes and coco to rockwool and clay pebbles, works in any irrigation system and doubles as a foliar spray. EC contribution stays minimal and shelf life reaches two years. At 20 ml per 10 litres, this 250 ml bottle yields roughly 125 litres of nutrient solution.
CANNA Rhizotonic 0.25 L — seaweed-based root stimulant for a fast start
CANNA Rhizotonic 0.25 L is a root stimulant made from a concentrated extract of the North Atlantic seaweed Ascophyllum nodosum. It drives rapid root-zone development in cuttings, seedlings and repotted plants, works across every growing medium and adds only a minimal amount of EC to the nutrient solution. The bottle sits within the wider CANNA product range stocked in the shop.
Why root-zone performance drives everything else
Uptake is capped by root surface area: a plant can only absorb what its roots physically reach. The seaweed extract supplies organic compounds, vitamins and minerals directly at that interface, which shortens the time a young plant needs to build a finely branched network. Downstream effects are measurable in water and nutrient uptake, canopy vigour and recovery speed after transplant shock. The natural compounds also support the synthesis of proteins and carbohydrates that plants deploy against heat and drought stress.
- Natural source: concentrated extract of Ascophyllum nodosum, harvested from North Atlantic shores.
- Stress buffer: targeted at repotting, drought events and high-temperature periods.
- Microbial support: extracts of this species can raise microbial populations in the substrate.
- Low EC load: minimal conductivity contribution keeps full control of the feed chart with your base nutrient.
Dosage and application
Shake the bottle before every use. Apply 40 ml per 10 litres of water as the first dose and after repotting, 20 ml per 10 litres through the vegetative stage and 5 ml per 10 litres during the generative stage. Always correct pH after the base nutrient and additives have gone into the tank, never before. In recirculating or drip-fed systems, refresh the nutrient solution every five to seven days. As a foliar spray, Rhizotonic mainly serves unrooted cuttings that still take up moisture through their leaves. The low EC also makes it usable during germination, where it helps soften the seed coat and supports the emerging taproot. Overfeeding brings no benefit at any stage: excess input loads the substrate and sets the plant back rather than pushing it forward, so stick to the published rates and adjust frequency instead of concentration.
Technical specifications
| Product type | Root stimulant / vitaliser |
|---|---|
| Active base | Ascophyllum nodosum extract (North Atlantic seaweed) |
| Volume | 0.25 L (250 ml) |
| First dose and repotting | 40 ml per 10 L of water |
| Vegetative stage | 20 ml per 10 L of water |
| Generative stage | 5 ml per 10 L of water |
| Application | Nutrient solution and foliar spray |
| Compatible media | Peat mixes, coco, rockwool and clay pebbles |
| Shelf life | 2 years, bottle closed |
| Storage | Dark and frost-free |
Where it fits in a CANNA feed chart
Rhizotonic is an additive, not a base nutrient, so it runs alongside your existing schedule. On coco, CANNA Coco A&B 2 x 1 L provides the matching base feed, while CANNAZYM 1 L breaks down dead root material left in the medium and complements the root-zone work. For propagation itself, Root Riot cubes (50 pcs) pair naturally with the foliar application.
At the vegetative rate, 250 ml covers around 125 litres of nutrient solution, which fits a single grow space or a first trial of the product. Order CANNA Rhizotonic 0.25 L online for fast shipping across Europe.
How much Rhizotonic should I use per 10 litres of water?
Use 40 ml per 10 litres for the first dose and after repotting, 20 ml per 10 litres during vegetative growth and 5 ml per 10 litres in the generative stage. Shake CANNA Rhizotonic 0.25 L before mixing, and set pH only once the base nutrient and all additives are already in the reservoir.
Does it work in recirculating hydroponic systems?
Yes. The extract is plant-based and compatible with every medium and irrigation method, including rockwool, clay pebbles, drip lines and recirculating reservoirs. In those systems the manufacturer advises refreshing the nutrient solution every five to seven days. The product also stays stable once diluted, so a mixed reservoir holds up well between changes.
Root stimulant or enzyme product — which do I need first?
They solve different problems. A root stimulant such as Rhizotonic builds new root mass and buffers stress, so it belongs at the start of a cycle and after every transplant. An enzyme product works on organic material already broken down in the substrate and matters most in longer runs or reused media. Growers with young plants start with the stimulant.
Do you ship this bottle across Europe?
Yes, orders leave our Belgian warehouse for destinations across Europe. The 250 ml format is compact, sealed and easy to ship. Once it arrives, keep the bottle closed in a dark, frost-free place to make full use of the two-year shelf life.