Mills Nutrients Ultimate PK Booster

MILLS NUTRIENTS ULTIMATE PK 0-7-6 – PREMIUM PK BLOOM BOOSTER & RIPENING PROMOTER

Take your flowering plants through the final stages of bloom with Mills Nutrients Ultimate PK 0-7-6, a concentrated phosphorus and potassium PK booster designed specifically for the later stages of the flowering cycle.

Mills Ultimate PK is a powerful bloom stimulant, flower hardener, bulking additive and ripening promoter, formulated to encourage larger, denser and heavier fruits and flowers while supporting plant vitality towards the end of the bloom cycle.

Its phosphite-based formulation provides an extremely bioavailable source of phosphorus alongside potassium and essential micronutrients, helping support nutrient uptake, healthy root function and strong plant development during this crucial finishing period.

KEY BENEFITS

✓ Powerful PK Bloom Booster – Provides concentrated phosphorus and potassium during the critical late flowering period.

✓ NPK 0-7-6 Formula – Specifically formulated for flowering and fruiting plants.

✓ Larger & Denser Flowers – Helps promote heavier, harder and more abundant fruit and flower development.

✓ Ripening Promoter – Designed for use during the final stages of the bloom cycle.

✓ Flower Hardener & Bulking Additive – Supports strong cell structure and high-quality final development.

✓ Bioavailable Phosphite-Based Formula – Uses a highly available form of phosphorus to support nutrient uptake and plant health.

✓ Chelated Micronutrients – Contains essential trace elements formulated for excellent plant absorption.

✓ Supports Flavour & Aroma – Designed to maximise the quality, flavour and aroma of fruits and flowers.

✓ Suitable for Multiple Growing Media – Ideal for hydroponics, coco coir and soil growing systems.

✓ Professional Mills Nutrient System – Can be incorporated into the complete Mills feeding programme alongside 

Basis A & B and other Mills additives.

PRODUCT SPECIFICATIONS

Brand: Mills Nutrients
Product: Ultimate PK
Product Type: PK Booster / Bloom Booster / Ripening Promoter
NPK: 0-7-6
Growth Stage: Flowering / Bloom / Ripening
Suitable For: Fruiting & Flowering Plants
Growing Media: Soil, Coco & Hydroponics
Form: Liquid Mixture
Appearance: Clear Liquid
Colour: Green
pH: Approx. 7
Density: Approx. 1.12 kg/L
Recommended Storage Temperature: 10°C – 30°C
Manufactured By: Mills Nutrients
Manufactured In: Holland / The Netherlands

NUTRIENT COMPOSITION

Ultimate PK contains the following nutrients by weight:

Phosphorus Pentoxide (P₂O₅): 7.4% – Water Soluble
Potassium Oxide (K₂O): 6.6% – Water Soluble
Boron (B): 0.010% – Water Soluble
Copper (Cu): 0.021% – Water Soluble
Iron (Fe): 0.048% – Water Soluble
Manganese (Mn): 0.016% – Water Soluble
Molybdenum (Mo): 0.001% – Water Soluble
Zinc (Zn): 0.008% – Water Soluble

The essential micronutrients complement the high phosphorus and potassium content, providing a comprehensive late-flowering supplement.

HOW MILLS ULTIMATE PK WORKS

During the later flowering stages, plants have changing nutritional requirements. Phosphorus and potassium play important roles in flower and fruit development.

Ultimate PK combines these key nutrients with an extremely bioavailable phosphite-based formulation.

Phosphorus supports plant metabolism, energy transfer, healthy root systems and flower development, while potassium supports nutrient and water transport, plant structure and sugar production.

The result is a specialist late-flowering PK additive designed to help plants finish their bloom cycle strongly.

DIRECTIONS FOR USE

Use Mills Ultimate PK from approximately week 5 of the flowering phase.

Start at approximately: 2ml per litre of water

Mills' feeding programme increases the dosage during the later flowering weeks depending on the feeding schedule being followed.

Always refer to the appropriate Mills Nutrients feed chart for exact dosage recommendations for your growing system and stage of flowering.

For best results, Ultimate PK can be used alongside Mills Basis A & B as part of the complete Mills nutrient programme.

Important: Do not premix concentrated nutrients together. Add each nutrient separately to water and mix thoroughly before adding the next product.

SUITABLE FOR

• Hydroponic growing systems
• Coco coir
• Soil
• Indoor growing
• Greenhouses
• Fruiting plants
• Flowering plants
• Professional & hobby growers

WHY CHOOSE MILLS ULTIMATE PK?

It is designed specifically for growers looking to maximise the final stages of flowering, helping produce larger flowers, denser fruit sets, stronger structure and excellent final crop quality.

Whether you're growing in soil, coco or hydroponics, Ultimate PK provides a simple way to introduce a dedicated finishing nutrient into your flowering feed programme.