Closing the Gap in Peat-Free Growing with Protein Fibres


Our Fibres make it easier for growers to move away from peat without sacrificing crop quality.

Our Mission

Materials for Life

At Grouse Fibre, we go beyond efficiency. Our protein fibres are engineered to improve the performance of peat-free media, delivering results that make it easier for growers to move away from peat without sacrificing crop quality.

We’re here to make peat-free growing a better experience for growers, with media that works harder, retains water better, and enriches your crops—naturally and sustainably.

More Than a Replacement—A Performance Upgrade

Our fibres are designed to go beyond replacing peat. They enhance the way peat-free growing media works, offering:

  • Strength & Consistency: A stable structure that handles the demands of your greenhouse.
  • Nutrient Efficiency: Naturally nitrogen-rich, reducing fertiliser needs while feeding healthier plants.
  • Water Retention Excellence: Keeps moisture where it’s needed, helping you grow with confidence and reduce waste.

By improving peat-free media, we make the sustainable choice the easy choice.


Improving Peat-free growing with abundant Proteins

The Challenge with Current Peat-Free Solutions

Existing peat-free growing mediums—such as bark and coir—do not fully meet the technical requirements for growers aiming to transition from peat. These cellulose-based materials lack the high nitrogen content, absorption capability, and adaptability essential for robust, sustainable growth.

Introducing Protein-Based Fibres

Grouse Fibre’s protein fibres are engineered to fill this gap, providing a high-nitrogen, highly absorbent alternative made from waste feedstock. Scaled production of our fibres will support the horticulture industry with an efficient, environmentally responsible replacement for peat-based materials.

Our fibres could save 9.7 million tonnes of CO₂ emissions

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