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
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
Restoring the land
8,546
native trees planted, a third by volunteers
+ DetailsRestoring the land
×Growing healthy food
7,012 m²
of food landscape
+ DetailsGrowing healthy food
×Feeding the local bioregion
263 kg
of surplus kai kept from the waste stream
+ DetailsFeeding the local bioregion
×Building a living classroom
2,500+
guests through the gate across 86 events
+ DetailsBuilding a living classroom
×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
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.
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.
Pick your own
48
families came to pick their own kai.
+ DetailsPick your own
×Our community gets quality veggies for a lower cost when they do the picking. Twenty bucks, fill a crate, take it home.
48 families came along, half of them new. Seventeen came back again. We're growing PYO into a full season, October 2026 to April 2027.
Garden soil
0.4 → 0.29
mg/kg spray residue clearing out of our soil. The healthier the soil gets, the faster it goes.
+ DetailsGarden soil
×Growing intensively puts pressure on soil, so half the job is making sure the ground improves rather than depletes.
We feed the biology, not the plant: compost extracts, microbial drenches, cover crops, mulch, minimal disturbance. Organic certification starts with microgreens in FY27.
Regenerative agriculture
220
cattle on virtual collars, up from 100 last year
+ DetailsRegenerative agriculture
×528 sheep and 333 cattle across 576 hectares, born here and living their whole lives on pasture that grows without irrigation or imported feed. No antibiotics, GMOs or synthetic hormones.
Halter's virtual collars guide the herd by GPS, moving stock off wet ground and out of waterways without a physical fence.
Permaculture orchard
90
fruit & nut varieties through their first full season
+ DetailsPermaculture orchard
×Five 100-metre rows of trees, continually testing what grows best in this valley and its changing climate. The first fruits have arrived, and this area has the highest worm count in the valley. Brought to life with gifted plants and volunteer labour.
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.
Community donations
6
months of donating weekly kai to Ōrongomai Marae, our local marae
+ DetailsLocal food accessibility
×From October to March we audited every item that left the shop without a transaction, totalling $9,814 of retail value. Ōrongomai Marae took our greens almost every week of the high season, and returned it by sharing hāngī with our visitors at Harvest Festival. Another 35 kg of venison from our own hunting went to the Upper Hutt Foodbank.
Mahi exchange
101
Farm Shop suppliers across Aotearoa
+ DetailsOur food basket
×The Farm Shop aims to support local, with over half of our suppliers from the Wellington region. Buying local at this quality carries a premium retail price, and closing that gap is a core focus for FY27.
Recreation & wellbeing
2,345
dozen eggs, laid and sold in the valley
+ DetailsBioregional economy
×Jason and Sarah's hens are up Blue Mountains Road. Their business No Boundaries eggs was our biggest external vendor of the year. Nine of our 101 suppliers come from Mangaroa and Whitemans Valley, a number we'd love to grow.
Nature wellbeing
$5,861
of trust-based kai in the honesty fridge.
+ Details24/7 food at the shop
×We've got honest neighbours. The fridge runs on an unstaffed honesty system, holding eggs and veges. People get what they need, leaving cash or making a bank transfer.
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.
Staff & community housing
9
houses under staff and community housing
+ DetailsStaff & community housing
×Nine homes across the farm house staff and community members, keeping the people who work this land living on it. [Placeholder — team to add: tenancy mix, affordability approach, upgrades this year.]
Gardens of significance
4-star
rating earned by Woodcote Gardens
+ DetailsWoodcote Gardens
×NZ Garden Trust is a nationwide network of quality-assessed gardens of significance throughout the country. Our flagship event space received a 4 star rating for the blend of native and exotic species, as well as a focus on biodiversity and long-term resilience.
Affordable housing
X
stat coming — affordable housing stock
+ DetailsAffordable housing
×[Placeholder — team to supply: how we've grown the valley's affordable housing stock, number of tenancies, and how rents sit against market.]
Living with the land
X
stat coming — residential land care
+ DetailsLiving with the land
×[Placeholder — team to supply: zoning work with local council, landscaping and garden projects around homes, and how residential character is kept alongside landscape-scale restoration.]
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
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.
Groundtruth helped us establish our first Earth Vitality Report: seven vital signs measured across 1,222 hectares.
Earth Vitality Report / baseline
Verified by Groundtruth + Hill Laboratories
Health of Te Awa o Mangaroa
Upper-mid
regional water-quality range for te Awa o Mangaroa
+ DetailsRiver health
×The river is our namesake, and a clear measure of our success. Stock stay out of the waterways and the banks get planted. In FY27 we plan to pair Halter's virtual fencing technology (GPS collars that steer stock without physical fencing) alongside riparian planting. We're proud that people can safely swim in our river.
Land cover
40%
land cover in old-growth native forest
+ DetailsLand cover
×Of our 1,222 hectares, 40% is native forest, 30% in pine plantation, 20% in pasture. The last tenth is peat, waterways, new plantings and houses. Steep ground grows trees, easy ground grows food. The shape of the land decides the use.
Microclimate sensing
9
sensor types active across 2 weather stations
+ DetailsMicroclimate sensing
×Weather stations in the garden and under the native forest now measure 9 different sensor vectors. They show us when to sow and where stock can go without damaging soil. It also shows where restoration planting can be prioritised next.
Biomass baseline
1,500 t
of carbon per hectare in the peat swamp
+ DetailsBiomass baseline
×Our first biomass baseline, trialled with Silvi, covers the back bush, our regenerating forest and the pines. Young forest is gaining, the old bush slightly declining. Early data, still being validated.
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.
Trees planted
8,546
natives planted across 3.3 ha
+ DetailsTrees planted
×We've been planting waterways and strategic areas on the farm. 2,900 trees planted by our volunteer community, 2,550 through trials with Groundtruth, 2,091 alongside Greater Wellington, and 1,005 by the team.
Peat swamp
15 ha
of ancient peat swamp scoped for restoration from 2026/27
+ DetailsPeat swamp
×Fifteen hectares of ancient peat swamp, holding more carbon per hectare than any other ground on this farm. We're planning to take it out of grazing in FY27 to restore its health.
Technique trials
0
sprays in our tree-establishment trials
+ DetailsTechnique trials
×Alongside Groundtruth, we've been testing methods for tree survivability. Guards versus no guards, grazing management, cost per surviving tree. Planting is only the start — earlier plantings get tended too: releasing trees from weeds, checking guards, monitoring growth. We're after the most effective way to establish natives without spray. What we learn gets shared with Aotearoa's wider reforestation ecosystem.
What we plant next
15,000
plants going in next year
+ DetailsWhat we plant next
×Multipurpose timber woodlots, species chosen to feed native birds and bees, and wide-spaced silvopastoral plantings that give shelter, shade, fodder and timber on the same ground. Supported by an on-farm nursery, in partnership with Heritage Nursery.
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
Trapping
242
predators removed across 78 monitored traps
+ DetailsTrapping
×Possums, rats and stoats prey on native birds and their eggs. Every catch is logged in Trap NZ's platform for community visibility. When we remove the predators, birds begin to thrive, and restore balance to the ecosystem.
Hunting
95
deer and goats hunted, of an estimated 190
+ DetailsHunting
×A full-farm thermal scan estimated 150 deer and 40 goats on the property. These browsers are an issue because they eat the seedlings that would replace the canopy as the older trees die. Removing them helps the forest to naturally regenerate itself.
Birdsong
2.73
tūī per count in our regenerating bush, matching bird sanctuary numbers
+ DetailsBirdsong
×The gap is the work. Tūī are holding on, and there are kākāriki and riflemen — tītipounamu, our smallest native bird — in the bush. The species are still here, but they're under threat.
Take the browsing off and the understorey thickens; thicken the understorey and birds have somewhere to nest.
Kiwi returns
1
kiwi recorded in the Mangaroa catchment, for the first time in a century
+ DetailsKiwi returns
×That result belongs to the whole movement, not to us alone.
With thanks to Groundtruth, Trap.NZ, Trap and Trigger, Pest Free Upper Hutt, Forest & Bird Upper Hutt, Greater Wellington Regional Council, and all the valley residents who have worked towards this vision.
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
Place-based learning , tours and workshops, Earth Fellows — building skills, confidence and a deeper relationship with this place.
Learning pathways / depth over reach
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.
Earth School
130
learners spent 4+ hours here
+ DetailsEarth School
×Between Earth School Aotearoa and the schools who visit us, 130 learners spent more than four hours on the farm this year, 15 spent more than fifty hours, and 9 learners spent over two hundred hours.
The Silverstream moment
536
people at 41 hands-on learning sessions
+ DetailsEducational workshops
×Forty-one hands-on sessions, from earth building to home herbalism, averaging about fifteen people each. Nearly two thirds ran free or sponsored, and four in five were built for schools and community groups rather than general ticket sales. We hosted three professional learning days for teachers on top of that.
Young people in farming
4
teenagers mentored on-farm
+ DetailsYoung people in farming
×Four under-17s worked alongside our farm manager this year: stock work, grazing, animal health, and jobs they had to finish alone.
One has gone on to a farming cadetship, another's building hours for Growing Future Farmers. Farming starts to look like a career worth having, especially for the young women.
Mahi exchange
40
learning residents from 14 countries
+ DetailsTeachers too
×40 learners from fourteen countries lived and worked with us. 68 volunteers came for planting days, and 5 households joined the Potato Growers Co-op. All came with skills and left with some wisdom.
“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
Big festivals, small gatherings, and plenty in between. What they share is food, land, and people who care about both.
Workshops
86
events hosted on the farm
+ DetailsGathering in nature
×Events are how people find this place. A lot of people just come once. Some come back every month. From farm to table dinners to breathwork journeys, technology gatherings and farm tours, these facilities have heard many different kōrero.
Foraging & skills
70
men through nature wellbeing immersion with BROS Aotearoa
+ DetailsMasculine Vitality Experience
×BROS Aotearoa held their first two Masculine Vitality Experiences here, 30 men each, for challenge, connection and nourishment. In a country where men face stark mental-health statistics, connection is protective — and these gatherings build it. Mangaroa Farms provided the land and the kai.
Events
1,500
average attendees at our Spring & Harvest Festivals
+ DetailsThe crowd pleaser
×Our biggest days of the year come in November and March, when we open the gates for a day of farm charm. 1,500 people gathered here each time for garden tours, Mangaroa kai, market stalls, live music, kids activities and more.
Earth Fellows
10
regenerative leaders, backed by $100k in grants
+ DetailsEarth Fellows
×This year we hosted our first Earth Fellows cohort, with 10 leaders in food, farming, housing and landcare across Aotearoa. This work strengthens the relational bonds of Aotearoa's regenerative movement, and gives these leaders a chance to rest. The fellowship has given rise to further collaboration with Mangaroa Farms.
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.
Looking ahead
Our focus for the year ahead
With thanks
Thanks to our ecosystem partners
sensors, soils, bioacoustics
Hill Laboratoriessoil testing
Trap.NZpredator records
Silviforest biomass
GainForestdata infrastructure
Ma Earthopen data
Hypercertsopen data
Heritage Nurseryon-farm nursery partner
Haltervirtual fencing
Trap and Triggerdeer & goat control
Pest Free Upper Huttcommunity trapping
Forest & Bird Upper Huttvolunteers & advocacy
Green Valleyearthworks
AgriContractsfarm contracting
Community resilience hub and education centre in Te Awa Kairangi / Hutt Valley bioregion.
Visit
98 Whitemans Valley RoadExplore
Mangaroa Farms Ltd is a charitable company wholly owned by Biome Trust Aotearoa