The original since 1993 PK 13-14 - Stimulator – Concentration 1:1500 – NPK 0-13-14
Bionova is the inventor of the original composition: PK 13-14.


Bionova's PK 13-14 is the perfect composition as the main flowering stimulator. Phosphorus develops a healthy and extensive root system and exuberant flowering. Potassium stimulates flowering potency in the plant. The combination of these two components in a food-grade mineral form is Bionova's original superbomer. Plants directly absorb all food grade minerals which gives you optimal control of your plants.

PK 13-14 is the perfect balanced combination of Phosphorus and Potassium. Phosphorus activates flowering within any treated plant and potassium stimulates flowering and creates exuberant flowering. It comes with food grade minerals, which is one of the purest forms of minerals. Barely containing ballast salts and heavy metals. In this way the PK 13-14 is also directly absorbable by the root system, and no heavy metals will remain in the final product. PK 13-14 should always be used in combination with one of the following main fertilisers: Soil Supermix, Hydro Supermix, Aero Supermix, Autoflower Supermix or Longflower Supermix.

• Use 1 to 2 ml PK 13-14 to 10 liters of water in the second week of the growth phase to promote faster root development.
• When deficiencies of phosphorus (P) and potassium (K) occur in the plant. Mainly these conditions of immobilization and deprivation of elements for cultivation are due to poor substrates and abnormal pH values ​​of the nutrient solution. To treat deficient plants, a solution of PK 13-14 can be applied with a dilution rate of 2.5-5 ml in 10 liters of water for irrigation or foliar spraying.

Bionova PK 13-14
• should be applied from the first week of flowering until the last week of flowering.
• can be mixed with all Bionova fertilizers, stimulators, minerals, universals and substrates.
• can be used as irrigation and as foliar spraying.

Application in irrigation
From the beginning of flowering until one week before harvest: 2-6 ml per 10 liters of water.

Foliar application
2.5-5 ml per litre