CANNA Fertilizer Guide: Terra, Coco, Aqua & Boost — Dedicated nutrients for every cultivation system

💧 Fertilizers CANNA®
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CANNA Fertilizer Guide: Terra, Coco, Aqua & Boost

1. CANNA — Brand and Philosophy

CANNA is a Dutch fertilizer brand known for its research into growing media and the development of nutrients specifically tailored to different growing environments. Unlike many other brands, CANNA designs dedicated formulas for soil, coco, and hydroponics — they do not use a “one-size-fits-all” approach.

This is CANNA’s greatest strength: each product line is optimized for the pH, nutrient-holding capacity, and CEC of its corresponding medium.

2. CANNA Terra — Soil Fertilizer

  • Terra Vega (NPK 3-1-4): Base fertilizer for the vegetative growth phase
  • Terra Flores (NPK 2-2-4): Base fertilizer for the flowering phase
  • Both are liquid, 1-part formulas (no A+B required)
  • Dosage: Veg 3–5 ml/L, Bloom 3–5 ml/L
  • Target EC: 1.2–1.6 (veg), 1.4–1.8 (bloom)

3. CANNA Coco A&B — Coco Medium Fertilizer

  • 2-part fertilizer, used throughout both veg and bloom — no need to switch bottles
  • Coco A: 2–4 ml/L (always mix A first)
  • Coco B: 2–4 ml/L (mix B second, stir well)
  • A:B ratio is always 1:1
  • EC: 1.0–1.4 (seedling), 1.4–1.8 (veg), 1.6–2.0 (bloom)
  • Important: Always add A to the water first, stir well, then add B. If A+B are mixed simultaneously, Ca will precipitate.

4. CANNA Aqua — Recirculating Hydroponic Fertilizer

  • Aqua Vega A+B: 2–4 ml/L of each part (veg)
  • Aqua Flores A+B: 2–4 ml/L of each part (bloom)
  • EC: 1.2–1.5 (veg), 1.5–2.0 (bloom)
  • Designed to stabilize pH in recirculating solutions

5. Additives

  • Rhizotonic: Root stimulator, 4 ml/L (week 1) → 2 ml/L → 0.5 ml/L
  • Cannazym: Enzyme to break down dead roots, 2.5 ml/L throughout the entire cycle
  • PK 13/14: PK booster, 1.5 ml/L. Use for only 1–2 weeks during mid-bloom. Do not use for more than 2 weeks.
  • Cannaboost: Flower quality enhancer, 2–4 ml/L from week 2 of bloom onwards

6. Feeding Schedule (Coco A&B)

Stage Week Coco A+B Rhizotonic Cannazym PK 13/14 EC
Seedling 1–2 2 ml/L 4 ml/L 2.5 ml/L — 0.8–1.0
Veg 3–5 3–4 ml/L 2 ml/L 2.5 ml/L — 1.2–1.6
Early Bloom 6–7 4 ml/L — 2.5 ml/L — 1.4–1.8
Peak Bloom 8–10 4 ml/L — 2.5 ml/L 1.5 ml/L (1–2 weeks) 1.6–2.0
Late Bloom/Flush 11–12 2 ml/L → Water only — — — —

7. Tips and Common Mistakes

Tips:

  • Always add A first, then B
  • Coco: Ensure 20–30% runoff with run-to-waste systems
  • Check EC runoff: If it exceeds 2.5, flush lightly
  • CANNA Coco + RO water: Add 1–2 ml/L of CalMag Agent

Common Mistakes:

  • Using PK 13/14 too early or for longer than 2 weeks → lockout
  • Using PK 13/14 and Cannaboost at the same time → PK excess
  • Mixing A+B simultaneously → Ca precipitation
  • Using Terra for coco, or vice versa
  • Not measuring EC runoff

References

  1. CANNA Official (2026). Feeding schedules. canna.com
  2. Veridian Grow (2026). CANNA Feeding Schedule 2026. veridiangrow.com
  3. Happy Pot Farmer (2025). CANNA Coco Feed Schedule. happypotfarmer.com
  4. AZ Growshop (2026). Experience selling CANNA in Thailand.

Disclaimer: The information in this article is for educational and reference purposes only. Cannabis cultivation must comply with the applicable laws of your country. In the Kingdom of Thailand, please follow the Controlled Herbs (Cannabis) Notification B.E. 2568 and the Ministerial Regulations B.E. 2569.

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