World-Class Wood Fibre for New Zealand Growers

Engineering High-Performance Growing Media

Daltons Pinegro is a superior, engineered wood fibre substrate, manufactured in New Zealand using a purpose-built twin-screw extruder, producing a high-quality fibre specifically for plant production. Blended into our growing media, Pinegro helps create the structure and consistency needed for strong root development and reliable growing performance, while reducing reliance on imported peat.

Key Growing Benefits*

	Faster initial root development and stronger seedlings
	Improved drainage and excellent capillary action ensuring better moisture distribution and oxygen flow around the root zone
	Quicker surface drying reducing algae, moss and root disease risk
	Improved substrate uniformity and easier rewetting
	Long-term structural stability in containers

*When used and managed correctly.

Precision Processing

1. Locally sourced pine

Pinus radiata woodchips are sourced as a by-product of the New Zealand timber industry.

2. Twin-screw extrusion

Gold-standard twin-screw extrusion process produces a lightweight, open and consistent wood fibre, ready for use without further treatment or ageing.

3. Formulated into Daltons Growing Media

The finished Pinegro fibre is blended with selected New Zealand ingredients into customised growing media to meet specific growing requirements.

Learn how Pinegro is made

The Renewable Cycle of Daltons Pinegro Growing Media

Daltons Pinegro helps turn a renewable by-product of New Zealand forestry into high-performance growing media for commercial growers.

Our Process - The Difference

We’ve invested in New Zealand’s most advanced twin-screw extrusion technology to purpose-engineer Pinegro fibre specifically for growing media.

This proven Gold Standard Technology mechanically defibres wood chips under controlled pressure and temperatures of 140–160°C. The result is a consistent, high-quality horticultural fibre with:

Optimal fibre length and structure for excellent aeration and drainage
Hygienic material free from weeds and pathogens
Stable, long-term performance
The flexibility to be incorporated into growing media for propagation, potting and large containers

Pinegro in Growing Media

Pinegro is blended with carefully selected ingredients to create growing media suited to different crops, production systems and New Zealand growing conditions.

Propagation and Grownets

Potting and Bedding

Large Containers and Trees

Why Choose Daltons Pinegro

	Made from locally sourced, renewable New Zealand Pinus radiata
	Manufactured at our Matamata facility using world-class twin-screw extrusion technology
	Connected network of fibers increases root development and water distribution
	Lightweight for easier handling and more efficient transport
	Suitable for propagation, nursery crops and large-container production
	Backed by Daltons Quality Assurance Programme and in-field technical team
	Helps reduce reliance on imported materials
	Highly versatile, used extensively for a variety of crops and container sizes

Proven Performance with Leading New Zealand Growers

Pinegro is delivering strong results across a range of commercial crops, container sizes and production systems.

“Pinegro has been a great step forward for us, a sustainable product for our ever-evolving industry.”

Tom Wilkinson
Co-Director, Robinsons Nursery

“We’ve seen excellent root health and structure in our advanced tree stock using Daltons wood fibre mixes.”

Mike Cato
Owner, Icon Trees

Technical Properties

Range pH*: 5.0–6.0
Electrical Conductivity at 20°C*: <0.5mS/cm
Bulk Density at 50% moisture content: 75–100kg/m³
Moisture Content*: 20–45%
Air-Filled Porosity*: 40–50%
Water Holding Capacity*: 35–60%
Water Retention Efficiency*: 50–60%
Wettability*: <30 seconds
Particle Size Range*: <9mm