Our Mates

The people we work alongside

Good things grow through good relationships.

BioCharge is built around practical people, shared ideas and relationships that make products work better on farm. Some use, test and help us develop our products. Others help us make, move or stock them, or are independent mates whose work we respect.

Find BioCharge closer to home

Where to buy

Our stockists and distributors make it easier to access selected BioCharge products. Contact them directly to confirm the current range, availability and delivery options.

Every relationship is a little different. We keep the labels straightforward so you know who supplies BioCharge and how each business works with us.

Rainbow & Brown logo
Distributor & stockist

Rainbow & Brown

Rotorua · Supplying throughout New Zealand

Rainbow & Brown is a New Zealand-owned agricultural products business based in Rotorua and supplying customers throughout the country. Alongside its established weed-control and fertiliser range, Rainbow & Brown is a distributor and stockist of selected BioCharge products.

BioCharge connectionDistributor and stockist of selected BioCharge products

Please contact Rainbow & Brown directly to confirm its current BioCharge range and stock availability.

Visit Rainbow & Brown →

Practical relationships

People we work with

Customers, suppliers, collaborators and practical operators who help us develop products, measure responses and get them where they need to go.

In Graeme’s words

“Trophy owes a lot to the personal investment Bio Charge has made in our orchard.”

Graeme McMillanOwner, Trophy Ridge Orchards

Facebook comment, 25 September 2026.

Customer & orchard collaborator

Trophy Ridge Orchards

Cromwell, Central Otago

Trophy Ridge grows cherries in Central Otago. We work alongside owner Graeme McMillan and the orchard team on soil health and nutrition, bringing practical support to their growing programme.

In his Facebook comment, Graeme credits BioCharge’s personal investment in the orchard with helping bring nitrogen and phosphorus to levels he describes as acceptable. He also thanks Hamish for his work on the health and wellbeing of the orchard’s soils.

Our connectionBioCharge customer and practical orchard soil-health collaboration
Read Graeme’s Facebook comment ↗Visit Trophy Ridge website ↗
Customer & on-farm development partner

Kahurangi Angus

Matiri Valley, near Murchison · West Coast

Kahurangi Angus is an Angus stud farming in the demanding conditions of the Matiri Valley. Since becoming a BioCharge customer, the team has worked closely with us to help develop products under real farming conditions and measure on-farm responses. Their practical feedback and enthusiasm have been hugely valuable. They are big fans of BioCharge, and we are big fans of the way they farm and work alongside us.

Our connectionBioCharge customer, practical product development and measured on-farm response work
Visit Kahurangi Angus →
Supplier & collaborative partner

Southland Carbon

Pukerau, Southland

Based at the historic Pukerau Brickworks, Southland Carbon produces New Zealand-made biochar and wood vinegar. They supply BioCharge with biochar and also work alongside us on product development and practical ways to return carbon to New Zealand soils.

Our connectionBiochar supply and collaborative product development
Visit Southland Carbon →
Molasses supplier

Winton Stock Feed

Winton, Southland · Supplying throughout New Zealand

Winton Stock Feed supplies BioCharge with molasses. Based in Southland and supporting New Zealand farmers since 1988, their team supplies stock feed across Southland and Otago and molasses nationwide. We are pleased to have them among the people we work with.

Our connectionMolasses supplier to BioCharge
Visit Winton Stock Feed →
Local logistics partner

Burrowes Transport

Hedgehope, Southland

Burrowes Transport is a locally based Southland operator helping BioCharge move products where they need to go. Practical, dependable and good people to work with.

Our connectionLocal transport and freight support
Visit Burrowes Transport on Facebook →
Preferred spray contractor

Rik Morris

RM Spraying · Southland & Otago

Rik Morris of RM Spraying is BioCharge’s preferred spray contractor for Southland and Otago. Contact Rik directly to discuss spraying and foliar feeding for your farm, availability and bookings.

Our connectionPreferred spray contractor for Southland and Otago
0274 142 931 rmspraying@outlook.com
Visit RM Spraying on Facebook →

People doing good things

Mates we rate

These organisations are independent from BioCharge. We respect the work they are doing, share some common ground and are proud to call them mates.

Independent from BioCharge

Being featured here does not imply ownership, agency, supply, representation or a formal commercial relationship with BioCharge.

Independent industry mateIndependent from BioCharge

Verdi

Bay of Plenty · Working across New Zealand

Verdi helps farmers measure, evidence and communicate the value of healthy soils, biodiversity and resilient landscapes. They are completely independent from BioCharge, but we love their practical approach to connecting ecology with the economy.

What they doEnvironmental measurement, trusted farm baselines and evidence for emerging nature markets
See what Verdi is doing →
Independent soil biology mateIndependent from BioCharge

Soil Foodweb New Zealand

Hanmer Springs, North Canterbury

Soil Foodweb New Zealand helps farmers and growers better understand the living biology in their soils through microbial assessments, practical consultancy and hands-on training. They are completely independent from BioCharge, but their soil-first approach strongly aligns with how we think.

What they doSoil microbial assessments, practical consultancy and microscope training
Explore Soil Foodweb NZ →

Know someone doing good work?

Good partnerships start with a useful conversation.

Whether you are interested in stocking BioCharge, supplying an ingredient, helping with product development or simply doing something worth knowing about, we would be pleased to hear from you.

Talk to BioCharge → Browse all products →