Impact Report

1 April 2025 – 31 March 2026

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Venture into the Mangaroa river catchment near Upper Hutt and you'll find an ancient peat swamp, surrounded by rolling hills, pine forest and regenerating native bush. By the waterways, people plant new forests, ankle deep in mud. More than eight and a half thousand trees, just this year. 

Continue along the river to find children from the Earth School learning hands-on skills for the future. Down at the market garden, pull your own veges straight from the ground and meet the people who grew them.

This is Mangaroa Farms: a laboratory for regenerative living.

We're a charitable organisation on 1,222 hectares, forty minutes north of Te Whanganui-a-Tara / Wellington in Aotearoa New Zealand, with seventeen people working towards ecological resilience, accessible kai and community education.

This report covers the year from 1 April 2025 to 31 March 2026, enabled by the decade of work that has led to this point. With a lot of grit and a bit of grace, we're working so the children of this neighbourhood may be nourished by local food, and stand on resilient soil as they steward its future.

FY26 at a glance

One year of work, ten years in the making.

Our first farm block was purchased in 2016, which began our stewardship journey.

Tap any image card to reveal detailsHover over any image card to reveal details

Together with our community, we're nourishing people and nature.

Mangaroa Farms is committed to honouring Te Tiriti o Waitangi.

Ko Remutaka e tu ake nei, tenei te mihi nunui
Ko Mangaroa te awa e rere ana nei, he mihi maioha
Ko te whenua Mangaroa e takoto nei, he mihi ana
Ko Waiwhetu raua ko Ōrongomai ngā marae, Tēna korua
Tenei te mihi aroha ki ngā mana whenua o te rohe
Te Ātiawa ratou ko Taranaki Whānui ki Te Upoko o Te Ika
Tēnā koutou, Tēnā koutou, Tēnā koutou katoa!

We acknowledge the Remutaka range that shelters us, Te Awa o Mangaroa flowing between these hills, and Waiwhetu and Ōrongomai, the marae of this rohe. We pay respect to those who walked here before us.

There is much to learn from mana whenua: the mātauranga of long standing presence and deep historical relationship with this cherished whenua. We walk alongside Te Ātiawa and Taranaki Whānui, on a journey of healing, restoration and reconnection.

Ka ora te whenua, ka ora te tangata — when the land is well, we are well.

Chapter 01

Community & Food

We're aiming to make high-quality food genuinely affordable, and to invite people to grow, harvest and learn alongside us.

We've got a lot to learn ourselves.

Growing healthy kai

We're growing delicious, healthy kai the organic way. No sprays, and a real focus on soil microbiology. The garden is its own ecosystem: the veges, the insects, the critters, and the people who come to grow and pick.



Local food network

The farm gate swings both ways. Food goes out to the valley, and people come in to work, walk and gather. We're working towards more of it being shared, given or grown together.


Housing & Facilities

People live here, not just work here. We look after homes for staff and community across the farm, and keep improving the places everyone shares — living with the land, not separate from it.

OUR FINDING

We can't beat industrial supermarket prices (yet), so we're experimenting with radically affordable kai through pick-your-own, bulk meat sales, and growing co-ops.

Chapter 02

Ecological Resilience

This year we conducted robust ecological measurements of the whole farm for the first time. What we found was a clean river, workable soil, and a forest thin on birdsong and young growth.

Establishing our baseline

Groundtruth helped us establish our first Earth Vitality Report: seven vital signs measured across 1,222 hectares.

Earth Vitality Report / baseline

Where we actually stand

Water quality in te Awa o MangaroaMid-to-upper range for the region
Fair
Forest coverAlmost every steep slope is covered by trees
Well matched TO OUR BIOREGION
Soil fertility and organic matterWithin normal agricultural levels
Workable
Soil biologyWorm counts are poor to moderate
Thin
UnderstoreyFavoured plants are low
Under pressure
BirdsongTūī are doing well, and kererū are scarce up the valley
Under pressure

Verified by Groundtruth + Hill Laboratories

Reforestation

This valley was once dense with ancient forest, on the North Island's largest peat swamp. Tōtara, kahikatea, rata and rimu stood watch over the awa. We're planting in an attempt to restore its original beauty.


Predator free

An estimated 68,000 native birds are killed in Aotearoa every night by introduced predators. Remove that pressure and the ecosystem start to rebuild itself.

The flywheel — why predator control comes first

Invasive species come down 242 trapped · 95 deer & goats hunted Seedlings survive the browsing pressure lifts Understorey thickens 29 woody species in the bush Birds nest again kererū scarce at 0.15 per count — far below a healthy forest It compounds. 8,546 trees planted this year feed the same loop — and sensors are watching, for the first time
Invasive species come down242 trapped · 95 deer & goats hunted
Seedlings survivethe browsing pressure lifts
Understorey thickens29 woody species in the bush
Birds nest againkererū scarce at 0.15 per count — far below a healthy forest
…and around again. It compounds — sensors now watching.

Our finding

Planting trees is the easy part. Our forests are quiet because of introduced predators, so we're doubling down on trapping and hunting.

Chapter 03

Events & Education

Place-based learning , tours and workshops, Earth Fellows — building skills, confidence and a deeper relationship with this place.

Learning pathways / depth over reach

Different depths of learning

536came through a hands-on learning pathway
130stayed more than four hours
9stayed more than two hundred hours
4walked into a farming career pathway

Learning on the land

Children learn differently when the lesson is the land under their feet.

We're growing young learners alongside Earth School Aotearoa, which is offering nature-based learning at Mangaroa Farms. Programmes are inspired by forest school and outdoor education, and support children to engage with literacy, numeracy and science through seasonal, land-connected experiences.

“As a parent, I wanted my children to grow up learning from the land, guided by wonder, and surrounded by community. Earth School was born from that hope.”

Earth School Parent

Convening together

Big festivals, small gatherings, and plenty in between. What they share is food, land, and people who care about both.

Our finding

Getting schools onto the land was harder than we expected, so we're moving from one-off visits to ongoing relationships.

Our foundation

Made possible by Biome Trust Aotearoa

Mangaroa Farms is a charitable company wholly owned by Biome Trust Aotearoa — a charitable foundation in service of environmental restoration, education and public health. This year the Trust invested $TK to make this work possible.

biometrust.earth →

Looking ahead

Our focus for the year ahead

  1. Run a full pick-your-own season, October 2026 to April 2027.
  2. Move from one-off school visits to ongoing relationships.
  3. Begin restoring the ancient peat swamp.
  4. Design efficient systems for landscape water storage.
  5. Plant the farm loop with edible trees.
  6. Solar on the butchery, shop, market garden, packhouse and cowshed.
  7. Implement technology systems for accurate measurement, reporting and verification.
  8. Open more common spaces, and support people to create with them.

With thanks

Thanks to our ecosystem partners

Mangaroa Farms

Community resilience hub and education centre in Te Awa Kairangi / Hutt Valley bioregion.

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98 Whitemans Valley Road
Te Awa Kairangi, Upper Hutt

Mon–Fri 11am–5pm
Sat 9am–5pm · Sun 10am–5pm

welcome@mangaroa.org

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Mangaroa Farms Ltd is a charitable company wholly owned by Biome Trust Aotearoa