Mills Ultimate PK – Flowering Booster
💳 Our 10% Digital Discount Has Been Applied Automatically 🚚 Free Next Working Day Delivery on Orders Over £75*1600+ Positive Customer Reviews -
Google | TrustPilotOriginal price was: £18.99 – £199.99Price range: £18.99 through £199.99. Price range: £17.09 through £179.99Current price is: £17.09 – £179.99Price range: £17.09 through £179.99.
Mills Ultimate PK – Flowering Booster
Mills Ultimate PK – Late Flowering & Ripening Booster
Mills Ultimate PK is a phosphorus and potassium supplement for the final 2–4 weeks of flowering. Used alongside your base nutrients, it supports fruit and flower development during ripening, helping improve size, weight and firmness.
Its soluble mineral formula also supplies trace elements to support plant nutrition through the finishing stage, encouraging natural aroma and flavour development.
Key Benefits
- Supports larger, heavier fruits and flowers
- Encourages firmness and crop quality
- Provides phosphorus, potassium and trace elements
- Designed for late flowering and ripening
Nutrient Composition
| Nutrient | Content |
|---|---|
| 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% |
How to Use Mills Ultimate PK
Use at 2ml per litre of water from flowering week 5 onwards, following the Mills feeding schedule for your crop’s flowering period. The supplied programme allows for a final one-week flush.
- Fill your reservoir or watering container with water.
- Add Ultimate PK and any other required additives individually, mixing thoroughly after each addition.
- Add your base nutrients, accounting for the additives’ contribution to your target EC.
- Check the finished solution and adjust the pH last.
Always dilute each product separately in water. Never mix concentrated nutrients or additives directly together.
Mills Feeding Schedule
For application timings and guidance on using Ultimate PK with the rest of the range, see our Mills Feeding Schedules. Follow the instructions on your bottle if they differ.
- Larger and harder fruits and flowers
- Hard cell structure
- Best possible aroma and flavour
- Increase in yield
| Weight | 6.0000 kg |
|---|---|
| Size | 5 Litre, 250ml, 1 Litre |
FREE NEXT DAY DELIVERY – Delivery Information
We offer FREE NEXT-DAY DELIVERY on orders over £75*
*An additional heavy goods surcharge may be applied to heavy or bulky goods (more info).
**Regional delivery surcharges apply for Scotland, Northern Ireland and the rest of the UK.
Orders Under £75
– Orders under £75 and under 5KG will be charged £7.99 (inc vat).
– Orders under £75 and 5KG+ will be charged at £8.99 (inc vat).
Our Next Working Day Delivery Policy
We will always do our utmost to deliver goods to you the next working day for all orders placed before 3pm (Mon-Thurs).
