Mills Ultimate PK 250ml

£21.99 inc VAT


Get a BIG finish with Mills Ultimate PK – a tried & tested Phosphite stimulant.

It ripens fruit, bulks your bloom & hardens plants in the last 2 – 4 weeks of flowering.

It also improves root health – it makes a great root cleaner and increases oxygen flow to roots.

Use it to get a bigger bloom with a stronger taste & aroma.

  • Increases size & weight
  • Hardens cell structure
  • Enhances root health
  • Improves taste & aroma
  • Cleans rootzone
  • Super soluble composition
  • Phosphate (P2O5): 7.4 %
  • Potassium (K2O): 6.6 %
  • Boron (B): 0.0100 %
  • Copper (Cu): 0.0210 %
  • Iron (Fe): 0.0480 %
  • Manganese (Mn): 0.0160 %
  • Molybdenum (Mo): 0.0010 %
  • Zinc (Zn): 0.0080 %


From The Manufacturer:

This powerful heavy weight bloom booster is designed to be used in the last two to four weeks of the flowering stage. The superior composition of ULTIMATE PK has been established through research and repeated field testing so that our experts would make sure that this will provide your plants with the boost they need for a grand finale – this formula will give your plants all the nutrients they require during ripening in order to achieve more abundant fruit set and hard cell structure. The magic performed by ULTIMATE PK stretches far beyond mere appearance, by also providing the best flavour and aroma.

This product will help your plants achieve:

  • larger and harder fruits and flowers
  • the best possible aroma and flavour
How to use?

This is aimed for use in the last 2-4 weeks of the blooming stage. In case you have been using C4, you should discontinue its use when switching to Ultimate PK.

As its name suggests, this is, indeed, the ultimate bloom booster available on the market. Moreover, it is extremely versatile, as it is compatible with all growing mediums and watering methods.

20ml per 10L