CANNA Fertilizer Guide: Terra, Coco, Aqua & Boost

AZ_Growshop_Asia · July 25, 2026, 10:26am

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.

2. CANNA Terra — Soil Nutrients

Terra Vega (NPK 3-1-4): base nutrient for the vegetative stage
Terra Flores (NPK 2-2-4): base nutrient for the flowering stage
Both are liquid, single-part formulas (no A+B needed)
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 Coir Nutrients

Two-part nutrient 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 after, 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 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: 2–4 ml/L per part (veg)
Aqua Flores A+B: 2–4 ml/L per part (bloom)
EC: 1.2–1.5 (veg), 1.5–2.0 (bloom)
Formulated 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 that breaks down dead roots, 2.5 ml/L throughout
PK 13/14: PK booster, 1.5 ml/L for only 1–2 weeks mid-bloom. DO NOT use for more than 2 weeks
Cannaboost: enhances flower quality, 2–4 ml/L from week 2 of bloom

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 wk)	1.6–2.0
Late Bloom/Flush	11–12	2 ml/L → plain water	—	—	—	—

7. 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 1–2 ml/L

Mistakes:

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

References

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

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 Controlled Herbs Act B.E. 2568 and Ministerial Regulation B.E. 2569.

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