Nutrifield PK Heavy 5L

Nutrifield PK Heavy 5L

PK Heavy is a precision early to mid-flowering additive developed as part of the Nutrifield Signature Range, built to drive strong flower initiation and lay the foundation for serious yield.

When plants shift into flowering, everything changes. Energy demand spikes, cell division accelerates, and flower sites begin forming rapidly. Most bloom boosters respond to this with a generic phosphorus and potassium hit. PK Heavy is different; it’s a staged flowering tool designed around what plants actually need during this critical phase, not just a PK spike.

Highly available phosphorus fuels ATP production, energy transfer, and cell division, giving plants the biochemical firepower to establish strong reproductive growth. Potassium supports carbohydrate transport, enzyme activity, and osmotic balance, directing photosynthetic energy directly to developing flower sites.

At the heart of the formula is triacontanol, a powerful plant biostimulant incorporated at precise, scientifically controlled concentrations to enhance photosynthetic efficiency and metabolic activity. This is the key difference between PK Heavy and commodity bloom boosters. With triacontanol, precision beats excess. The right concentration drives faster, more efficient flower formation without overstimulation, helping plants convert light and nutrients into early-stage density and structure.

PK Heavy is manufactured using high-purity inputs selected for stability and plant availability, producing a clean, consistent solution with stable pH behaviour and reliable performance across hydro, coco, and soil systems. The result is a faster, more uniform transition into bloom, stronger flower-site development, and improved early density gains that directly influence what ends up in your harvest.

Within the Nutrifield Signature Range, PK Heavy powers the front half of flowering, setting up the crop for late-stage expression with Crystalic. If you want more flowers and a better structure from the moment bloom begins, this is where it starts.

Compatible with hydro, coco, and soil. Fully compatible with Nutrifield base nutrients.