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PK 13-14 HESI is a highly concentrated mineral additive that provides the necessary phosphorus and potassium during the flowering phase, promoting explosive bud formation. Ideal for coco and hydroponic crops, its formula optimizes floral development.

During the flowering phase, plants experience an increasing demand for energy and essential nutrients, especially phosphorus and potassium. These elements not only participate in DNA synthesis and energy metabolism, but are also fundamental for the transport of water and nutrients, as well as for photosynthesis.
PK 13-14 HESI has been designed to meet these needs gradually and in a controlled manner, avoiding excesses in early stages. Its specific formula is recommended for the last weeks of flowering, enhancing the swelling and density of the flowers.
When combined with the base flowering fertilizer, this additive acts as a key booster to improve crop yield, both in volume and quality. The formula of PK 13-14 HESI is completely water-soluble, making it a safe option for automatic irrigation systems in hydroponic or coco fiber crops.
In addition, it can also be applied in soil, adjusting the dose accordingly.
This product is part of the renowned range of Hesi Fertilizers, originating from the Netherlands, which stands out for its purity and effectiveness in cannabis cultivation.
The application of PK 13-14 HESI should be carried out together with the corresponding flowering fertilizer (Hydro or Coco), starting halfway through the flowering phase:
In soil cultivation, a dose of 1.5 ml per liter of water is recommended during the final flowering phase.
The formula of PK 13-14 HESI consists exclusively of essential mineral nutrients:
These ingredients are 100% water-soluble, preventing clogging in irrigation systems and ensuring efficient absorption by the plants.
The use of PK 13-14 HESI in cannabis cultivation offers multiple key advantages:
This product is essential for those looking to optimize production without compromising the health of their plants, especially in coco or hydroponic crops.
PK 13-14 HESI is a concentrated mineral supplement of phosphorus and potassium developed to meet the nutritional needs of plants during advanced flowering. This product from the HESI brand is specially formulated for crops in nutrient-free media such as coco and hydroponic systems, although it can also be applied in soil with dosing precautions.
Its main objective is to enhance floral development, promoting large, heavy flowers with high resin content. Thanks to its purity and solubility, it is ideal for integration into any advanced nutrition program.
It represents an indispensable tool for demanding growers who want to maximize the quality and quantity of their harvest.
You can buy PK 13-14 HESI at GrowShopWeb.com, your trusted Grow Shop. We offer discreet shipping throughout the peninsula and have a wide catalog of Hesi Fertilizers and products for cannabis cultivation.
As a specialized Grow Shop in Spain, we provide technical advice so you can get the most out of each product. Shop safely and receive it conveniently at your home.
If you are looking for a final boost for your flowers to reach their maximum potential, PK 13-14 HESI is your ideal ally.
It provides the critical nutrients at the right time, increasing flower production without c
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