Mills C4

Mills C4

From £20.95

C4 is a sophisticated blend of macro nutrients, micro nutrients, bio-stimulants, carbohydrates, and trace minerals guaranteed to give the grower heavier and higher quality yields. The potent Bio-Stimulants in C4 cause the plant to produce massive amounts of essential oils and sugars.

Availability: 250ml, 1ltr and 5ltr.

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Mills C4 is an advanced bloom stimulator designed to assist the plants’ delivery of carbohydrates, macro and micronutrients, and trace minerals to developing flowers and facilitate the triggering and maturation of complex essential oils appropriate for the early and mid stages of flower development.

When used with Basis A & B it alters the NPK to have a higher phosphorus and potassium levels to help initiate growth of fruits and flowers. C4 is predominately organic and has zero biological activity, allowing it to work in conjunction with beneficial biologics to feed tender flower sites and maintain overall health of the plant.


Mills C4 is a powerful flowering fertiliser. It comprises a unique combination of micro- and macronutrients, carbohydrates, trace minerals, and bio-stimulants. C4 ensures that you achieve high yield harvests and improves the quality of fruits. Thanks to the fertiliser’s strong bio-stimulants, plants produce huge amounts of sugars and essential oils. Mills C4 accelerates your plants’ growth, stimulates flowering and enhances the taste of your fruits.

C4 is responsible for:-

  • Quicker and more abundant fruit set.
  • Promotion of plant growth and vitality.
  • Increased oil and sugar production.
  • Development of denser, harder and heavier fruit and flowers.

Recommended Additional Purchases:-

For our full range of Mills nutrients see here!

Or you can find our other flowering boosters here!

Additional information:-

More information from the manufacturer here!