Canna PK 13/14 — High-Concentration Mid-Flower P-K Booster

Canna PK 13/14 — High-Grade Phosphorus & Potassium Mid-Flower Booster

A high-grade mixture of phosphorus and potassium designed for the flowering phase — both elements play a major role during the bloom phase of fast-growing plants. Thanks to a special production process, Canna combines pure phosphorus and potassium in very high concentrations, making them readily available to plants. The reference PK booster that other PK products are measured against.

Why growers choose Canna PK 13/14:

• High-grade pure P and K — no fillers, just the macronutrients flowering plants need
• Very high concentration — small doses do significant work, good value per grow
• Special production process — Canna's proprietary technique combines P and K in available form
• Mid-flower specific — typically used weeks 3-5 of bloom for peak effect
• Industry reference for PK boosting — the benchmark every other PK product is compared to
• Compatible with Canna feeding programme — pairs cleanly with Aqua, Coco, Terra base nutrients
• Works with any base nutrient — universal PK booster, not Canna-only

Who it's not for:

An additive, not a base nutrient — use alongside a full feeding programme. Specifically for mid-flower (typically week 3-5) — not for early or late flowering. Stop 7-10 days before harvest for a proper flush. Follow label dilution carefully; Canna PK 13/14 is highly concentrated, over-application locks out calcium causing serious deficiencies. For 9/18 PK ratio (different balance), Buddha's Tree or Shogun PK Warrior are alternatives.

Available to collect from our Stone shop at Unit 24, Emerald Way, ST15 0SR — or ships the same working day from our UK warehouse. Not sure if this is the right fit? Give us a ring on 01785 556355 or email sales@roots2riches.com — we're growers ourselves, happy to help.