In StockIntense PK 13/14
£31.46£34.95Save £3.49
In stock
Available from our Bristol shop
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Description
Intense PK 13/14 is a highly concentrated bloom booster formulated to deliver an extra surge of phosphorus and potassium during the flowering stage. Designed for use in all growing media and hydro systems, it supports bigger blooms, denser fruit, and stronger yields when plants need it most. This professional-grade additive integrates easily into any feeding schedule for consistent, high-quality results.
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Powerful Bloom Enhancer – Provides an exact 13% phosphorus and 14% potassium ratio to maximise flower and fruit production.
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Boosts Flower Density – Encourages heavier, tighter blooms with improved structure and oil content.
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Speeds Up Flowering Response – Helps plants redirect energy efficiently into flower formation and ripening.
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Highly Concentrated Formula – Delivers strong results with low dosage rates, offering excellent value for money.
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Compatible with All Systems – Suitable for soil, coco, and hydroponic setups, and works with all nutrient brands.
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Improves Nutrient Uptake – Balanced mineral ratios ensure fast absorption without nutrient lockout.
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Clean, Stable Solution – Fully soluble and leaves no residue in tanks or lines.
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Easy Integration – Simply add during the mid to late bloom phase alongside your base feed.
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Professional Results – Trusted by commercial growers for consistent yield and flavour improvements.
The Intense PK 13/14 combines purity, balance, and concentrated power—helping growers push plants to their full flowering potential for dense, high-quality harvests every time.
Key facts
| Type | Concentrated PK bloom booster |
|---|---|
| Analysis | 13% phosphorus, 14% potassium |
| Growing medium | Soil, coco and hydro; works with all nutrient brands |
| When | Mid to late flowering, alongside the base feed |
| Brand | Intense Nutrients |
| Sizes | 250 ml, 1 litre and 5 litres |
| Category | PK Boosters |
How to use
Add PK 13/14 to your base feed in the mid to late part of flowering, at the rate on the label. It is fully soluble and leaves no residue in tanks or lines.
It goes well with Intense base feeds such as Intense Coco and Intense Hydro. Check the EC of the finished feed with a pH and EC meter. More boosters are in PK boosters.
Questions
When should I use Intense PK 13/14?
In the mid to late part of flowering, added to your usual base feed.
Does it only work with Intense nutrients?
No. It is suitable for soil, coco and hydro and works with all nutrient brands.
Growers’ guides
- PK Boosters and Bloom Boosters: PK 13/14 Doses and When to AddWhat a PK booster does, what PK 13/14 and 9/18 mean, when to add Canna PK 13/14 or Canna Boost, and the boosters and stimulants we sell compared.
- pH and EC: Meters, Test Kits and pH Up/DownHow to test pH with a meter or a pH test kit, measure EC, read the makers' targets, use pH Up and pH Down, and calibrate and care for a meter.
- Grow Tent Setup: How to Set Up a Grow Tent, Step by StepHow to set up a grow tent step by step: the spot, the tent, light, extraction, intake, timers and a test run. Plus what our grow tent kits include.




