1. CANNA — Brand & Philosophy
CANNA is a Dutch fertilizer brand renowned for its research into substrates and specialized nutrition for each type of growing medium. Unlike many other brands, CANNA designs separate formulas for soil, coco, and hydro — no one-size-fits-all approach.
This is CANNA’s greatest strength: each product line is optimized for the pH, nutrient retention capacity, and CEC of its corresponding substrate.
Doses and NPK values differ between product versions and markets, so this guide does not list them. Use the label on your bottles or the current CANNA feeding schedule at canna.com.
2. CANNA Terra — Soil Nutrients
- Terra Vega: base nutrient for the vegetative stage
- Terra Flores: base nutrient for the flowering stage
- Both are liquid, single-part formulas (no A+B needed)
- Target EC: 1.2–1.6 (veg), 1.4–1.8 (bloom)
3. CANNA Coco A&B — Coco Coir Nutrients
- Two-part nutrient used THROUGHOUT both veg and bloom — no need to switch bottles
- A:B ratio is always 1:1
- EC: 0.8–1.0 (seedling), 1.2–1.6 (veg), 1.4–2.0 (bloom)
- Important: Always add A to water first, stir thoroughly, THEN add B. Mixing A+B simultaneously will cause Ca to precipitate.
4. CANNA Aqua — Recirculating Hydroponic Nutrients
- Aqua Vega A+B: two-part base nutrient for veg
- Aqua Flores A+B: two-part base nutrient for bloom
- EC: 1.2–1.5 (veg), 1.5–2.0 (bloom)
- Formulated to stabilize pH in recirculating solutions
5. Additives
- Rhizotonic: root stimulator; the label rate is highest at the start and is reduced over the grow
- Cannazym: enzyme product that breaks down dead root material, used throughout
- PK 13/14: PK booster for a short period mid-bloom only. Do not use it for longer than the label allows
- Cannaboost: bloom additive, used from week 2 of bloom
6. Tips & Common Mistakes
Tips:
- Always mix A first, then B
- Coco: water run-to-waste with 20–30% runoff
- Check EC runoff: if > 2.5, do a light flush
- CANNA Coco + RO water: add CalMag Agent at the label rate
Mistakes:
- Using PK 13/14 too early or for more than 2 weeks → lockout
- Mixing A+B simultaneously → Ca precipitation
- Using Terra for coco or vice versa
- Not measuring EC runoff
References
- CANNA. CANNA COCO Grow Schedule. canna.ca/downloads/canna-coco-grow-schedule
- Veridian Grow (updated 2026). Canna Feeding Schedule & Feed Chart 2026: Terra, Coco A&B, and Aqua (EC/PPM Guide). veridiangrow.com
- Happy Pot Farmer (2021, updated 2024). Canna Coco Feed Schedule: Canna Coco A & B Feed Chart and Grow Guide. happypotfarmer.com
Disclaimer: The information in this article is for educational and reference purposes only. Cannabis cultivation must comply with the applicable laws in your country. In the Kingdom of Thailand, comply with the Notification of the Ministry of Public Health Re: Controlled Herbs (Cannabis), B.E. 2568 and Ministerial Regulation B.E. 2569.