Mills C4
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 bacteria and fungi to feed flower sites and maintain overall health of the plant.

Mills Feeding Schedules


  • Quicker and more abundant fruit set
  • Promotion of plant growth and vitality
  • Increased oil and sugar production
  • Heavier fruit and flowers
Weight N/A



5 Litre, 1 Litre

Mills C4 Flowering Booster


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