• Plagron PK 13-14 | Phosphorus & Potassium Flowering Booster
  • Plagron PK 13-14 additive range in 250ml, 500ml, 1L, 5L and 10L sizes
  • A 250ml bottle of Plagron Universal pk 13-14 additive fertilizer, featuring a purple label and a white cap, set against a plain white background.
  • A 500ml bottle of Plagron Universal pk 13-14 additive fertilizer, featuring a purple label and a white cap, set against a plain white background.
  • A 5 litre bottle of Plagron Universal pk 13-14 additive fertilizer, featuring a purple label and a white cap, set against a plain white background.
  • A 10 litre bottle of Plagron Universal pk 13-14 additive fertilizer, featuring a purple label and a white cap, set against a plain white background.
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Plagron PK 13-14 | Phosphorus & Potassium Flowering Booster

£5.80
£5.80
£23.20 l
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SIZE: 250 ML

Plagron PK 13-14 Flowering Booster

Plagron PK 13-14 is a concentrated mineral fertiliser that adds phosphorus and potassium to a plant’s feeding programme during flowering and fruit development. Its NPK analysis is 0-13-14, making it a targeted supplement to a suitable base nutrient rather than a complete feed on its own.

Phosphorus supports flower development, while potassium plays a role in the development of firm fruits. PK 13-14 can be used across growing substrates and with Plagron base nutrients, allowing growers to adjust their flowering feed to the crop and growing medium.

Key features

  • Concentrated phosphorus and potassium supplement for flowering plants.
  • NPK analysis: 0-13-14.
  • Mineral formulation for use alongside a base nutrient.
  • Suitable for soil, coco and hydroponic growing programmes.
  • Maximum dosage of 2 ml per litre of water.

How to use Plagron PK 13-14

  1. Shake the container well before use.
  2. Add up to 2 ml of PK 13-14 per litre of water and mix thoroughly.
  3. Add the appropriate base nutrient until the desired EC value is reached.
  4. Use the prepared solution each time plants are irrigated from the fourth week of flowering, following the relevant feeding schedule.

For example, the maximum rate is 20 ml in 10 litres of water or 100 ml in 50 litres. Measure the complete nutrient solution and adjust feeding to the crop’s needs.

Can PK 13-14 be used with Sugar Royal?

Yes. Plagron identifies PK 13-14 and Sugar Royal as products that can be combined in a flowering programme. Follow the dosage guidance for each product and the selected feeding schedule.

Available sizes

SteelRoots offers Plagron PK 13-14 in 250 ml, 500 ml, 1 litre, 5 litre and 10 litre sizes, subject to availability.

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Extra PK Power When Flowering Demands More

Give flowering plants an extra hit of the nutrients that matter with Plagron PK 13-14, a concentrated mineral flowering enhancer packed with phosphorus and potassium.

With an NPK ratio of 0-13-14, this straightforward PK additive supports flower formation and helps plants develop more compact, solid fruits and flowers. Because the nutrients are mineral-based, they’re readily available for uptake – ideal when plants are working hard during the later flowering stage.

PK 13-14 works across different substrates and alongside your regular base nutrients, making it an easy way to strengthen an existing bloom feeding programme without overcomplicating your nutrient line-up.

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Frequently Asked Questions

Plagron PK 13-14 provides flowering plants with an additional supply of phosphorus and potassium. Phosphorus supports flower formation, while potassium plays an important role in developing firm fruits and flowers, making PK 13-14 a useful addition when plants have increased demands during bloom.

Plagron recommends introducing PK 13-14 from the fourth week of the flowering phase. From this point, it can be included in the nutrient solution each time plants are irrigated.

Shake well before use and add a maximum of 2 ml of PK 13-14 per litre of water, a dilution of 1:500. Plagron advises adding PK 13-14 first, followed by your base nutrient until the required EC level is reached.

Plagron PK 13-14 has an NPK ratio of 0-13-14, providing a concentrated dose of phosphorus and potassium without additional nitrogen. This makes it specifically suited to supporting plants during flowering rather than vegetative growth.

Yes. PK 13-14 is an enhancer rather than a replacement for your base flowering nutrient. Plagron states that it can be used with all base nutrients, allowing you to add extra phosphorus and potassium to your existing flowering feed.

Yes. Plagron specifically recommends combining PK 13-14 with Sugar Royal. The two products target different aspects of flowering: PK 13-14 focuses on phosphorus and potassium for yield and fruit development, while Sugar Royal focuses on taste and aroma.