Fuck Tree Planting. It’s a Scam! - The trillion-dollar feel-good fantasy of the modern ‘tree-planting industrial complex’ is complete bullshit & must stop now.

This is the story of tree planting. Not the story you’ve been sold, with the stirring music and the aerial footage of barren hillsides transforming into lush canopies. The real story. The one where we have collectively spent billions of pounds, dollars, and euros buying ourselves a warm feeling while actively damaging the ecosystems we claim to be saving.

The good news is that there is something better. Something cheaper, more effective, more biodiverse, better at capturing carbon, and better at delivering every single ecosystem service you can name. It requires no logistics, no supply chains, no nurseries, no labour forces, and no corporate branding campaigns. It is called natural regeneration, and it has been doing this job for approximately 350 million years without any help from us whatsoever.

We just need to get out of the way.

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The Numbers That Should Have Ended This Debate Years Ago

Start with the headline finding that kicked off a decade of well-meaning ecological disaster. In 2019, a team at ETH Zurich published a paper in Science claiming there was space for 0.9 billion hectares of new forest on Earth, and that filling that space with trees could absorb two-thirds of all human carbon emissions. It went viral instantly. The Trillion Trees campaign was born. Corporations pledged. Governments committed. Elon Musk donated a million dollars to Team Trees. Everyone felt extraordinarily good about themselves.

The problem was that the paper was wrong. Multiple scientific rebuttals followed, pointing out that the analysis confused grasslands, savannas, and peatlands for potential forest land, that planting trees on those ecosystems would actually release carbon rather than capture it, and that the carbon capture figures were wildly overstated. Thomas Crowther, the lead author, went on to spend the next four years watching his work get weaponised by oil companies and corporate polluters as justification for continuing their operations unchanged.

By COP28 in Dubai in 2023, Crowther himself stood up and begged people to stop. “If no one had ever said, ‘Plant a trillion trees,’ I think we’d have been in a lot better space,” he said. The man whose study launched the modern tree-planting industrial complex was publicly asking that industrial complex to cease operations.

Nobody listened. The pledges continue. The nurseries keep growing. The saplings keep dying.

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What the Science Actually Shows About Soil

Before we can talk about what tree planting does wrong, you need to understand what it is planting into. And to understand that, you need to recalibrate your entire sense of what soil is.

Soil is not dirt. This matters enormously and almost nobody grasps it.

Take a single teaspoon of healthy, undisturbed forest soil. In that teaspoon you will find somewhere between 100 million and one billion bacteria. Not just any bacteria, but potentially up to 15,000 distinct species of them, forming ecological relationships of labyrinthine complexity that science has barely begun to map. Alongside the bacteria, there are fungi, whose thread-like hyphae extend through the soil in networks that can cover acres from a single organism. There are protozoa, from a thousand per teaspoon in low fertility soils to a million per teaspoon in fertile ones. There are nematodes, hundreds of them in each teaspoon, spanning at least three distinct trophic levels: some that eat bacteria, some that eat fungi, some that eat other nematodes. There are mites, springtails, tardigrades. A single square foot of forest litter and topsoil can contain 200 species of mites alone.

All of these organisms are in constant dynamic relationship with one another and with the plants above them. The bacteria and fungi form the base of the web, decomposing organic matter, fixing nitrogen, releasing phosphorus from mineral substrates, and storing nutrients in their own bodies so they cannot be leached away by rain. The protozoa and nematodes graze on bacteria and fungi, and in doing so release nutrients in plant-available forms exactly where plant roots can absorb them. The mites and springtails shred leaf litter into fragments that increase surface area for microbial action, and they carry bacteria and fungi on their bodies to new locations as they move through the soil, essentially performing nutrient distribution logistics. Earthworms consume all of it, passing the mixture through a gut that suppresses pathogens, and leave behind castings that are among the most nutritionally complete structures in nature.

The mass of microbes per acre of productive farmland is roughly equivalent to the biomass of two cows. Except those cows are invisible, never stop working, require no feed, produce no methane, and are running what is arguably the most sophisticated biochemical processing system on the planet.

In a healthy, undisturbed forest, the ratio of fungal biomass to bacterial biomass in the soil can be anywhere from 10:1 to 1000:1. That fungal dominance matters because fungi are the primary decomposers of complex organic compounds, the ones that can break down lignin and cellulose, the tough structural materials that lock carbon into recalcitrant, long-lived forms. Fungal networks also form the mycorrhizal associations that connect tree roots to the broader soil ecosystem, allowing trees to trade sugars for nutrients and water, and in some cases to transfer resources between individual trees across a forest. The wood-wide web is real, though considerably less telepathic than popular writing suggests, and it is built by fungi that took decades to establish in an undisturbed soil.

Now take a spade. Drive it into that soil. Turn it over. Plant a sapling.

You have just destroyed most of that system.

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How Tree Planting Can Cause Net Carbon Loss

This brings the only real published work by Nina Friggens and colleagues at the University of Stirling and the James Hutton Institute. It is quietly one of the most important and underreported ecological papers of the past decade.

The researchers studied four experimental sites across Northern Scotland where native tree species, specifically downy birch and Scots pine, had been planted onto heather moorland twelve to thirty-nine years earlier. These were not monoculture plantations of alien conifers. They were native species, carefully planted, with proper experimental controls, on appropriate land. The kind of tree planting that conservation groups point to as good practice.

The result: zero net gain in ecosystem carbon at any of the four sites. At one site, a net carbon loss.

The tree biomass was there. The trees had grown. Carbon had been sequestered in wood and roots, exactly as promised. But the soil told a different story. In birch plots at the twelve-year-old Ballogie site, soil organic carbon in the organic horizon was 58% lower than in adjacent unplanted heather control plots. At Kerrow, where the trees were thirty-nine years old, soil carbon was 50% lower than controls. The carbon that had accumulated in tree trunks and branches was simply replacing carbon that had been lost from the soil. Sometimes, not even replacing it: at one site there was an overall deficit.

Soil respiration, the rate at which carbon is being released back to the atmosphere, was significantly higher in the planted plots than in the heather moorland. Not because of root activity, interestingly: root and mycorrhizal hyphae production was similar between planted and control plots. Something else was happening.

The researchers propose a mechanism called priming. When you introduce trees into a grassland or heathland ecosystem, you change the chemistry of what enters the soil. Tree roots and tree litter carry different organic compounds than heather roots and heather litter. These new inputs stimulate the soil microbial community. The microbes, energised by this fresh carbon, ramp up their enzymatic activity. And in doing so, they begin decomposing the pre-existing soil organic carbon, the ancient, recalcitrant stuff that had been building up for centuries, the carbon that was supposed to stay locked in the ground.

You thought you were adding carbon to the system. You were actually unlocking a vault of it and releasing it to the atmosphere.

There is also a mycorrhizal dimension. Heather is colonised by ericoid mycorrhizal fungi, a type of fungus that forms tight, enclosed associations with root cells and is particularly effective at suppressing saprotrophic decomposers, the microbes that eat dead organic matter. This suppression is part of why heathland builds up such thick organic horizons over time. The heather fungi are essentially putting the brakes on decomposition, allowing organic matter to accumulate.

Introduce birch or pine and you introduce ectomycorrhizal fungi, a completely different guild with different enzymatic capabilities, including peroxidases that actively break down complex organic matter to liberate nitrogen. These fungi have faster hyphal turnover, different enzyme profiles, and they do not suppress saprotrophic decomposers in the same way. The net effect is to accelerate the breakdown of organic matter that had taken centuries to accumulate.

The paper concludes: “Ecosystem-level biogeochemistry and C fluxes must be better quantified and understood before we can be assured that large-scale tree planting in regions with considerable pre-existing SOC stocks will have the intended policy and climate change mitigation outcomes.”

This is scientific language for: we have been planting trees on carbon-rich soils and confidently expecting them to capture carbon when the actual data shows they may be releasing it.

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The ‘Tree-planting Industrial Complex’ Greenwashing Machine

The Friggens study is about Scottish moorland. But the problem is global, and it is not limited to soil carbon accounting errors.

In India, a major government-led tree planting initiative was analysed by independent researchers who found little evidence that it had resulted in more tree cover, more carbon uptake, or any measurable community benefits. “It was a complete disaster,” said Jim Enright, former Asia coordinator of the Mangrove Action Project, referring to a separate record-breaking planting event.

In Sri Lanka, a government mangrove planting programme intended to protect coastlines produced this result: nine out of twenty-three project sites showed no surviving plants at all. Only three sites had survival rates above fifty percent.

In Australia, billions of dollars of public funding went into tree-planting offset schemes while extensive land-clearing continued, effectively negating any sequestration benefits.

And then there is Turkey’s eleven million trees. Gone in three months.

Yale Environment 360 has documented these failures in a piece they call “Phantom Forests,” noting that forest scientists say such debacles are “surprisingly frequent” and are “threatening to undermine efforts to make planting a credible means of countering climate change.” The UN’s own Food and Agriculture Organisation has acknowledged that many projects amount to little more than “promotional events, with no follow-up action.”

The corporate world has built an entire industry on this. Buy a flight, plant a tree. Offset your factory’s emissions with a forest in Madagascar. Companies pay for carbon credits backed by tree planting projects that, on investigation, turn out to have extraordinarily high mortality rates, no monitoring infrastructure, and occasionally fraudulent documentation. In June 2024, Brazil’s Federal Police launched Operation Greenwashing, arresting individuals connected to illegal logging schemes that had been fraudulently selling carbon credits from phantom forests.

The Trillion Trees campaign, meanwhile, discovered a troubling bottleneck in 2023: a massive undersupply of seedlings. Not enough trees were being grown in nurseries to meet the planting pledges. The industrial logic of tree planting had been scaled up faster than the supply chain could support, with no apparent consideration of whether the supply chain should be scaled up at all, or whether the entire approach was conceptually flawed.

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What Natural Regeneration Actually Does

When land is removed from intensive use and left alone, what happens is not the slow gradual creep of a few pioneer plants across bare earth. What happens is an explosion.

At the Knepp Estate in West Sussex, a 3,500-acre farm the “depleted, polluted, dysfunctional farmland,” the transition began in 2001. Fences came down. Victorian drainage was broken up. Dead trees were left standing. Free-roaming herds of English longhorn cattle, Tamworth pigs, Exmoor ponies, and deer were introduced to replace the ecological roles of missing megafauna. And then, essentially, nothing was done.

The results of a two-decade review published in early 2026 are extraordinary. Breeding birds have increased by 900% overall. Turtle doves, which have declined by 98% across the UK since 1994, increased by 600% at Knepp. Nightingales, functionally vanishing from the British countryside, increased by 511%. Butterfly species in some areas doubled. Dragonflies and damselflies increased by 900%. Purple emperor butterflies, rare oak specialists, moved in to use the regenerated scrub. Peregrine falcons and owls established themselves. White storks, absent from Britain for centuries, are now breeding on the estate.

None of this was planted. None of it was managed into existence by a project coordinator with a spreadsheet. It happened because the conditions for it to happen were restored.

The soil tells the same story from beneath. When land is left to regenerate, the fungal communities that drive carbon accumulation and nutrient cycling re-establish themselves gradually, spreading through hyphal networks from remnant patches of undisturbed soil. The mycorrhizal inoculum, the reservoir of fungal spores and fragments that new plants need to form their belowground partnerships, is rebuilt. Root exudate chemistry diversifies as plant communities diversify, feeding a wider range of microbial guilds. The predator-prey relationships in the soil food web, the nematodes eating bacteria, the mites eating nematodes, the birds and moles eating mites, rebuild their complexity. And with that complexity comes resilience, the capacity to absorb disturbance without collapsing, which is exactly what we need in ecosystems facing climate change.

Research on naturally regenerating forests in New Zealand found that they had higher understory native plant cover, higher sapling wood density, and more saplings of species that dominate old-growth forests than planted forests of the same species. The planted forests had higher aboveground biomass in the short term, but the naturally regenerating forests showed healthier trajectories toward mature forest structure and function.

A 2024 study in Nature found that in approximately 46% of suitable areas, natural regeneration is more cost-effective at sequestering carbon than tree planting, and that naturally regenerating forests typically remove carbon fastest when they are between twenty and forty years old, meaning older secondary forests can provide more immediate climate benefits than newly planted ones.

The World Resources Institute’s analysis of secondary forests found that carbon removal rates in naturally regrowing tropical forests had been significantly underestimated, and that the potential for natural regeneration in the tropics alone represents an above-ground carbon sequestration potential of 23.4 gigatonnes of carbon over thirty years across 215 million hectares.

That is the carbon equivalent of more than three years of the entire planet’s gross carbon removals from all existing tropical and subtropical forests, sitting there waiting in land that simply needs to stop being cleared.

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The Biodiversity Gap Is Not Close

The comparison between natural regeneration and tree planting on biodiversity is not a marginal advantage. It is categorical.

Studies comparing the two approaches find a 56% higher rate of biodiversity in natural regeneration projects compared to manual tree planting under similar conditions. The World Resources Institute notes that natural regeneration is “often cheaper and more likely to benefit native wildlife.” The research literature on the subject is consistent: planted forests, particularly monocultures or near-monocultures of commercially selected species, produce a fraction of the biological diversity of naturally regenerating ecosystems.

The reason comes back to the soil. Planted trees, because they are chosen for growth rate, timber value, or political palatability rather than ecological function, do not build the same soil communities as naturally arriving pioneer species, which have evolved alongside local soil organisms over thousands of years. The mycorrhizal partnerships that form between naturally regenerating plants and local fungal communities are the result of co-evolution. They are tuned to one another. They create the conditions for the next wave of successional species to arrive and establish.

A planted monoculture of Sitka spruce, or eucalyptus, or even native birch planted in rows on former heathland, cannot replicate this process. The species arriving through natural seed dispersal, from wind, from bird droppings, from the fur of passing mammals, arrive in a sequence shaped by millions of years of ecological development. The pioneer species create the conditions for the species that follow them. The shade-tolerant species arrive once the pioneers have built enough canopy. The fungi that break down birch litter create the soil chemistry that oak seedlings need. Oak seedlings create the conditions for hazel. Hazel creates the conditions for the insects that the dormice need. Dormice disperse the seeds of the trees that hazel needs for competition. This is not metaphor. This is literally how it works.

Monoculture tree planting short-circuits this entire process and substitutes a single-species overstorey for a multi-layered, multi-species, multi-functional ecosystem. It is the ecological equivalent of replacing a rainforest with a car park that has some potted plants.

Monocultures also create conditions that favour pest outbreaks and disease. When a single species covers vast areas, any pathogen or pest adapted to that species has an effectively unlimited food supply and no resistance from predator diversity in the surrounding community. We have seen this with Dutch elm disease, with ash dieback, with the pine beetle infestations devastating North American forests. A plantation of a single species facing such an outbreak is not a resilient forest. It is a waiting catastrophe.

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The Peatland Trap

The Friggens study is specifically about organic-rich soils, and this is where tree planting policy in the UK has created what may turn out to be one of its most significant unintentional climate crimes.

Scotland, Wales, and significant parts of northern England contain vast areas of peatland and peaty soils. These are among the most carbon-dense terrestrial ecosystems on Earth. Peat accumulates because the conditions for decomposition, drainage and oxygen, are absent. The organic matter that falls into a bog does not rot in the normal sense. It compresses, slowly, over millennia, building up layers of preserved carbon at a rate of perhaps a millimetre per year.

A metre of peat represents roughly a thousand years of accumulated carbon. Some British peatlands are four, five, six metres deep.

The current Forestry Commission Scotland guidance advises against planting trees on peat more than fifty centimetres deep. The Friggens data, and a substantial body of other research, suggests this threshold is far too permissive. Their experimental sites had organic horizons averaging between eight and thirty-nine centimetres, well within the permitted planting zone, and even at these depths the planting resulted in massive net carbon losses through the priming mechanism. The recommendations in national restoration plans that up to 34% of Scotland’s land area may have potential for woodland expansion risk, as the paper states, “jeopardising soil and ecosystem C stocks on the extensive heather moorlands and heathlands with organic horizons of less than 50cm depth.”

We are planting trees on carbon stores and calling it climate action.

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The Wood Wide Web and Why You Cannot Build It

The mycorrhizal networks that underpin forest function are not something you can install. They are built over time through a process of ecological succession that requires a seed bank, an intact fauna, remnant patches of undisturbed habitat to act as sources of colonising organisms, and decades of undisturbed development.

Research on ectomycorrhizal fungi, the guild associated with birch, oak, pine, beech, and other major temperate forest trees, shows that seedlings connected via root-associated fungal hyphae to soils beneath established neighbouring adult trees grow faster and have greater survival rates than seedlings isolated from existing fungal mycelia. The fungal network, which can extend for metres in every direction from an established tree, is itself a form of infrastructure that arriving seedlings plug into. Without it, they are on their own.

This is why clear-cut harvest and then replanting is so much less effective than selective harvesting with retention of legacy trees. The retained trees maintain the mycorrhizal inoculum potential in the soil. Remove them all and you remove the fungal network. The seedlings you plant then have to start from scratch, forming new associations with whatever fungal spores happen to be present in degraded soil, which in a landscape fragmented by intensive agriculture and monoculture forestry may be a very depauperate pool indeed.

Natural regeneration, by contrast, occurs in the presence of whatever remnant ecosystem still exists. Seeds arriving from adjacent natural habitats carry fungi on their seed coats. Animals dispersing seeds have gut microbiomes that inoculate the soil. The process of natural succession, plants arriving in sequence and building communities, creates the conditions for fungi to spread and develop as each new plant host becomes available.

The wood-wide web cannot be installed on a Tuesday. It grows, or it does not grow. And the fastest way to ensure it grows is to stop destroying the conditions it needs and let it grow.

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What Actually Works: The Evidence From Around the World

Eastern Europe and the former Soviet Union provided an inadvertent natural experiment in natural regeneration when agricultural collapse after 1991 resulted in the abandonment of over fifty-eight million hectares of cropland across Russia and Kazakhstan. What happened to that land? It regenerated. Forests came back, steppes recovered, biodiversity returned, at a scale that no tree-planting programme could have achieved or funded. Nobody planned it. It just happened.

In Costa Rica, following the end of financial incentives for deforestation and the introduction of payments for ecosystem services in the 1990s, forest cover increased from 21% to 52% of the country’s land area over three decades. Much of this increase was through natural regeneration on abandoned pasture and farmland.

In the Brazilian Amazon, secondary forests, naturally regenerating on previously cleared land, accumulate biomass carbon at rates that make them highly significant climate assets. A Science Advances study modelled the carbon accumulation potential of 2.4 million square kilometres of naturally regenerating secondary forest in Latin America over forty years, finding a potential of over 31 gigatonnes of carbon dioxide sequestration, at minimal cost.

The consistent finding across these studies is that the carbon sequestration rates of naturally regenerating forests, particularly in tropical regions, are higher than previously understood, and higher than the rates achievable through planted monocultures at equivalent age because the diverse plant communities of natural regeneration produce more varied root architectures, more varied litter chemistry, and more varied mycorrhizal associations, all of which contribute to soil carbon building rather than soil carbon priming.

Meanwhile, back in the UK, Rewilding Britain’s analysis found that allowing and enhancing natural regeneration, supported by native tree planting only in suitable sites where there is no existing seed source, would be the most effective long-term approach for landscape-scale reforestation. They model the potential to double Britain’s woodland cover, currently among the lowest in Europe, through natural regeneration at a fraction of the cost of planting programmes.

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The Ecosystem Services Nobody Is Counting

Carbon is only one of the things that healthy, naturally regenerating ecosystems provide. It is perhaps not even the most important one on a practical, day-to-day basis.

Hydrological regulation: naturally regenerating vegetation, with its multi-layered canopy structure, diverse root architectures penetrating the soil at different depths, and intact soil biota creating the pore structure and aggregate stability that allows water infiltration, is vastly more effective at regulating flood risk and replenishing aquifers than monoculture plantations. Plantations of conifers in particular are well-documented as increasing runoff and acidifying stream water.

Air quality: diverse plant communities produce a wider range of volatile organic compounds, support more complex insect communities, and create the structural complexity that allows pollutants to be trapped and metabolised at higher rates.

Pollinator habitat: planted monocultures provide essentially nothing for pollinators. Naturally regenerating scrubland, the brambles and thorns and pioneer herbs that colonise abandoned land in the early stages of succession, is some of the richest pollinator habitat in the temperate world. The same scrub that planning policies describe as “undesirable rough land to be managed” is what nightingales and turtle doves and brown hairstreak butterflies need to survive.

Mental health and wellbeing: a forest that has been naturally structured by ecological processes, with its varied age structure, dead wood, fallen logs, diverse understorey, and unpredictable spatial arrangement, provides an entirely different quality of experience from a plantation of evenly spaced trees. Research consistently finds that contact with structurally complex natural environments has greater mental health benefits than contact with managed, manicured ones.

Flood mitigation: reintroduce beavers, as is happening in several UK locations, and they do in a season what millions of pounds of engineering cannot: they create wetlands, slow water flows, raise water tables, and reduce downstream flood peaks. This is natural regeneration at its most dramatic, and it is free once the animals are there.

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The Counter-Argument, Taken Seriously

It would be dishonest not to acknowledge that in specific circumstances, active tree planting has a role.

Where natural seed sources are absent because surrounding land has been converted, where the seed bank has been destroyed, where invasive species prevent natural succession, or where a particular species with specific habitat requirements needs to be established in a location it cannot reach through natural dispersal, planting makes sense. In heavily degraded tropical forests where the forest floor is dominated by competitive lianas that prevent any seedling establishment, a combination of liana removal and native species planting can accelerate recovery.

The research literature broadly supports a position of “natural regeneration where possible, targeted planting where necessary,” rather than a binary choice. A Nature Climate Change study from 2024 found that using a mix of the two methods, natural regeneration where it is cost-effective and planting where it is not, could sequester more carbon than either method alone. The study estimates that this optimal approach could remove 31.4 billion metric tonnes of CO2 over thirty years at less than fifty dollars per tonne.

But the key word is “mix,” and the key insight is that natural regeneration should be the default, with planting used only where there is a specific, evidence-based reason why natural regeneration will not work. This is the inverse of current policy, which treats tree planting as the default and natural regeneration as an afterthought.

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The Policy Failure and What Should Replace It

National climate plans submitted to the UN, analysed in November 2025 by an international expert group, revealed that countries are planning to use 2.5 billion acres of land for tree planting and forest restoration, an area larger than China. At the same time, those same national plans would still allow roughly ten million acres of forest to be destroyed every year through to 2030 and another forty million acres degraded.

We are planning to plant trees on grasslands while simultaneously felling ancient forests.

The priorities are exactly backwards. An ancient forest, with its centuries of accumulated soil carbon, its complex mycorrhizal networks, its multi-layered biodiversity, is worth vastly more as a climate and biodiversity asset than any plantation you could put in its place. Protecting existing forests and letting degraded land regenerate naturally will capture more carbon, at lower cost, with greater certainty, and with orders of magnitude greater biodiversity benefit, than planting trees on land that is already performing ecological functions we have not even bothered to measure.

What should change:

Stop subsidising mass tree planting schemes without rigorous pre-planting assessment of soil carbon stocks, existing ecological value, and natural regeneration potential. The Friggens study shows that planting trees on peaty or organic-rich soils can cause net carbon loss. Policy that ignores this is not climate policy. It is performance.

Create meaningful financial incentives for landowners to simply stop using land and allow natural regeneration. This is dramatically cheaper than planting schemes and produces better outcomes. Payment for ecosystem services schemes should value natural regeneration at least as highly as active planting.

Stop counting tree planting in monocultures toward biodiversity and carbon targets. A plantation of Sitka spruce is not a forest. It is a timber crop. Measuring its existence as a biodiversity or climate gain is category error at best and fraud at worst.

Fund long-term monitoring. The failures documented in Sri Lanka, India, Turkey, and elsewhere occurred partly because nobody was measuring outcomes beyond the planting event itself. Carbon credits backed by tree planting should require ten-year survival and growth monitoring before any credits are issued.

Prioritise existing ecosystems. The most cost-effective climate and nature action available in the UK is protecting the remaining areas of ancient woodland, upland peatland, lowland heath, and other semi-natural habitat from further degradation. These ecosystems are already working. They need protection from the people who want to “improve” them.

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A Final Word About What Soil Knows

There is a particular kind of institutional arrogance in assuming that the best response to centuries of ecological destruction is to hire a contractor, order some saplings, and start filling in the landscape according to a plan.

The organisms in the soil have been solving the problem of carbon sequestration, nutrient cycling, and ecosystem stability for hundreds of millions of years. They evolved alongside the plants they support and the animals those plants feed. They encode, in the structure of their communities, the accumulated knowledge of every environmental perturbation the ecosystem has survived. When you leave them alone, they begin immediately to rebuild. When you intervene clumsily, as the Friggens study shows with devastating clarity, you can undermine the very processes you were trying to support.

Natural regeneration is not passive. It is an extraordinarily active, dynamic, highly organised process involving millions of species making billions of decisions per second about who to partner with, what compounds to produce, where to allocate resources, and how to respond to environmental signals. We did not design this system. We cannot improve on it. We can only protect the conditions it needs or destroy them.

The trillion trees campaign was, at its heart, a story we told ourselves about our own agency. We broke this. We can fix it. We will plant our way back. It felt good. It gave us something to do. It generated excellent social media content and satisfied corporate ESG committees and let governments feel they were taking meaningful action without touching a single fossil fuel subsidy or reforming a single agricultural policy.

Meanwhile, in Scotland, the soil under the birch plantations kept releasing carbon. In Turkey, the saplings kept dying. In Sri Lanka, the mangroves never came back. And somewhere on a hillside in West Sussex, a nightingale that nobody planted flew into scrub that nobody managed and did exactly what nightingales have always done: found what it needed in a landscape that had been left, finally, to decide for itself what it wanted to become.

That is the only model that works. Get out of the way. Stop planting. Start protecting. Fund the fence, remove the sheep, and wait. Nature will do the rest. It always has. We just have to stop mistaking our own busyness for action.

The Only Mechanism That Actually Works: Land Value Tax and the Economics of Letting Go

Here is the thing nobody in the rewilding movement wants to say out loud, because it is politically uncomfortable and because the organisations that fund this work depend on the goodwill of the people it most directly threatens.

Natural regeneration will not happen at scale. Not because nature does not want to return. Not because the ecology does not support it. Not because we lack the knowledge, the species, the seeds, the ambition. It will not happen at scale because while profit can be made from sub-marginal land, landowners will never voluntarily give it back. Not this generation, not the next one, not ever. You cannot ask someone to stop doing something that makes them money and expect them to comply out of moral sentiment. Not at scale. Not reliably. Not in a system whose every incentive points the other direction.

This is the root. And we have been hacking at branches for fifty years.

I have spent thirty years watching the conservation movement spend hundreds of millions of pounds trying to buy back fragments of a landscape it should never have had to buy. I have seen agri-environment schemes pay farmers rent to allow a corner of their desert to contain a few wildflowers, while the same farmer pockets the subsidy income that funds the intensive farming that created the wildlife desert next door. I have watched carbon credit markets funnel money to corporations planting trees on peat bogs, releasing stored carbon to generate a credit for the very emissions they were supposed to offset. I have watched Biodiversity Net Gain create a market for phantom biodiversity on paper that is, on the ground, a monoculture of plastic tree tubes in a field margin where nothing lives.

All of it driven by the same structural reality: in Britain, the value of land rises regardless of what you do with it or to it. A farmer who drains a wetland, removes a hedgerow, and saturates his fields with neonicotinoids will, if he holds the land for twenty years, make a substantial capital gain that has nothing to do with what he produced and everything to do with the surrounding economy growing around him. He did not create that value. He captures it anyway. And the wildflower meadow that does not exist, the insect that is not there, the flooded village downstream: these costs are externalised onto everyone else and onto future generations, which is to say they are externalised onto no one in a way that any market mechanism can currently capture.

This is Ricardo’s Law of Rent. It is the root from which every branch of ecological destruction grows. And the only instrument that strikes directly at that root is Land Value Tax.

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What Land Value Tax Actually Does to the Landscape

The principle is not complicated, though its opponents have spent two centuries making it sound that way. Land has value not because of what the landowner does with it, but because of what the surrounding society builds around it. The roads, the railways, the schools, the hospitals, the human concentration that makes one piece of the earth worth more than another: none of that value was created by the owner of the land. All of it should, in justice and in economic logic, flow back to the community that created it. Land Value Tax captures that flow.

Under LVT, landowners pay an annual charge on the rental value of their land, assessed on the site itself rather than on anything built on it or done with it. This distinction is everything. The tax does not fall on what you produce. It does not fall on your labour, your investment, your enterprise. It falls on the value of the location, which you did not create.

The ecological consequences of this are transformative in ways that most conservation professionals have never stopped to calculate.

Take the uplands first. The sheep-grazed moorlands of Scotland, Wales, the Pennines, the moors of south-west England are, in ecological terms, some of the most degraded landscapes in Europe. They look wild. They are not. They are deserts maintained by a combination of overstocking with sheep, driven grouse management, and deer management that maximises deer numbers for stalking income rather than reducing them for ecological health. Almost all of this activity is economically irrational without public subsidy. The sheep farming is largely uneconomic without the agricultural payments that supplement it. The grouse shooting depends on the legal and illegal persecution of predators that would otherwise make it unviable. The land is being actively degraded at public expense, and the landowners profit from the capital appreciation of an asset that is rising in value because the surrounding economy is growing, not because they have done anything to deserve it.

Under Land Value Tax, the annual charge on upland land with low agricultural productivity would reflect its actual low rental value. The subsidy income that currently makes intensive sheep grazing and grouse management the rational choice would be replaced by a tax obligation that made low-impact, extensive land use the cheapest option. The farmer who de-stocked his moorland, broke up the drainage grips that currently accelerate runoff, allowed the native birch and rowan and alder scrub to return, would pay less tax than the farmer who continued to maintain an ecological desert at public cost. The economics would flip. And nature, which has been waiting patiently for exactly this moment for two hundred years, would respond within a single decade in ways that would astonish everyone watching.

In the lowlands the same logic applies. The river corridors of England, the wet valleys and flood plains that are currently farmed on marginal economics with taxpayer subsidy because the subsidy makes it worth doing, would no longer be economically viable as intensive farmland once LVT removed the income stream that justified the enterprise. They would revert. The beavers would move in, without any reintroduction programme, without any licence application, without any five-year monitoring plan or stakeholder engagement process. They would move in because the conditions for them to do so would exist, and because beavers, given the conditions, are extremely good at being beavers.

The wetland that three beaver families create for free is functionally equivalent, in terms of flood mitigation, water purification, and carbon storage, to the Natural Flood Management project I am currently running in Sussex at a cost of one million pounds. Let that land in the gut where it belongs. Three animals, working for nothing, do what a million pounds of public money achieves through engineering. The only reason we are paying for the engineering rather than housing the animals is that the economics of land tenure make it irrational for the landowner to allow the animals to work their land.

Change the economics. Change the land. It is that direct.

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The Conservationist’s Dirty Secret

“There are a thousand hacking at the branches of evil to one who is striking at the root.”

I have carried that sentence by Thoreau in my head for three decades. I have quoted it in board meetings and conference speeches and in conversations with ministers. I believe it with the same certainty I believe anything. And yet I spent most of my career hacking at branches, because hacking at branches is what conservation organisations do, because it is fundable and communicable and because it produces the individual victories that sustain a movement emotionally, even as the broader war is being lost comprehensively.

The dirty secret of the British conservation movement is this: we have more protected sites, more environmental legislation, more agri-environment schemes, more nature reserves, more conservation charities, more public rhetoric about nature recovery, than at any point in history. England has lost roughly 40% of its species abundance since 1970. Priority species, those we most urgently tried to protect with targeted resources and action plans, have lost approximately 80% of their relative abundance over the same period. The trend, in 2024, continues downward and appears to be accelerating.

The species we most urgently tried to protect have lost four-fifths of their relative abundance in fifty years.

That is not a story about insufficient effort. It is a story about effort applied at the wrong level. We have been trying to purchase ecological outcomes from a system whose every structural incentive produces ecological destruction. We have been paying rent to landowners to allow a corner of their desert to hold wildlife, while the economic logic that created the desert, the rising land value that rewards any use of the land over no use, the subsidies that make intensive farming the rational choice, remains entirely unchanged.

The nature reserve model of conservation, the system of ecological islands in an economic ocean, is not conservation. It is an extremely expensive way of managing decline. Every protected site requires continuous investment, because the moment the investment stops, the economic pressure that surrounded it reasserts itself and the island is eroded. The conservation organisations that run these reserves know this. Most of them do not say it, because their donors would be disturbed to learn that their contributions are paying for a system that is losing the war.

In many ways, nature conservation has become just another method of rent extraction by landowners who are trying to hide the fact that their fields are essentially deserts, devoid of wildlife, and the taxpayer must pay rent if we want wild animals to occupy their land. I said that twenty years ago. The data published by Defra in April 2026 has not given me any reason to take it back.

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The Political Economy of a Bad Idea That Has Never Gone Away

Henry George proposed Land Value Tax in 1879. Winston Churchill championed it in 1909. The Green Party adopted it as official policy decades ago. Milton Friedman and Joseph Stiglitz, economists who agreed on almost nothing else, both concluded that it was the most economically efficient and socially just form of taxation available. Fred Harrison used it as the analytical foundation for predicting, accurately, the timing of every major property crash of the last forty years. Britain still does not have one.

The gap between the quality of the argument and the fact of its political invisibility is one of the most instructive phenomena in modern economic history. It tells you, if you are willing to look, that the relationship between good ideas and political power is not determined by the quality of the ideas. It is determined by whose interests the ideas serve.

The people who would lose from Land Value Tax are large landowners, property developers, banks whose balance sheets depend on rising collateral values, and the class of investors who have discovered, over the past decade, that marginal British land can be converted into a financial instrument through the stacking of carbon credits, biodiversity net gain units, nutrient neutrality credits, and timber tax relief. These people are among the most politically connected in the country. They do not need to organise a conspiracy against the reform. Their interests are so deeply embedded in the structure of the state, the media, the legal system, and the assumptions of political common sense that the reform simply does not advance.

The green movement, whose love of nature is genuine and whose analysis of what is happening is largely accurate, has a structural allergy to the political economy of land. Land Value Tax is officially Green Party policy. In practice, when you raise it in most conservation circles you encounter a reaction that ranges from polite bafflement to active suspicion. Some see it as a market mechanism and therefore as contaminated by capitalism, as if the critique of capitalism required the defence of every feature of the current system, including the ones that are most directly responsible for destroying the countryside they love. Some sense, correctly, that it would threaten landowners, and misread this as a reason to be wary rather than a reason to be enthusiastic. Some simply cannot make the connection between a tax on land values and the living landscape they are fighting for.

This is the Zen problem of the environmental movement: people who love what they are trying to protect, but who refuse to understand the machinery of its destruction because understanding it feels like a contamination of the love. You can love the lapwing and the nightingale and the dormouse and the bog-moss with every fibre of your being, and that love is real and it matters. But love without structural analysis is sentiment. And sentiment, however sincere, does not stop the insect apocalypse. For fifty years, conservationists have been John Sutherland on a broken motorcycle, waiting for someone else to understand how it works.

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Sub-Marginal Land and the Rewilding Blockage

Here is the practical mechanism through which Land Value Tax unlocks natural regeneration at scale, and it is worth being precise about it because the detail is where the argument lives.

Sub-marginal land is land whose agricultural productivity, in a market free of subsidy, is insufficient to cover the costs of farming it. In Britain, this category is larger than most people realise. The steep hillside that erodes every time it rains. The wet valley bottom that floods in winter and grows rank grass in summer. The rocky outcrop that takes half a day to get a tractor across. The thin chalk downland that produces modest yields at enormous input cost. Under the current subsidy regime, much of this land is farmed, intensively or semi-intensively, because the payments make it worth doing and because the rising capital value of the land means it is rational to maintain its agricultural classification even at an operational loss.

Remove the subsidies and impose Land Value Tax at its actual rental value, which is to say at its very low actual rental value for genuinely marginal land, and the calculation changes completely. The farmer who de-stocks the steep hillside, who blocks the drainage grips in the wet valley, who stops ploughing the rocky ground and lets the scrub come in, pays minimal tax on land that is now performing its natural ecological function. The farmer who continues to maintain the desert at input cost, without the subsidy income that justified it, faces a combination of operational loss and tax obligation that makes continuation irrational. The land is released. Not transferred to a conservation body. Not bought by a charity or a rewilding project. Simply released, by the withdrawal of the economic pressure that held it in a degraded state.

Nature moves in. Not in a decade. In a season. The seed bank is there, in most of Britain, within reach of viable populations of dispersing species. The mycorrhizal inoculum, which we spent several thousand words earlier in this piece explaining cannot be planted or installed, is in the adjacent hedgerow, in the unimproved field corner, in the remnant patch of old grassland three fields over. The birds bring seeds in their guts. The wind brings spores. The water brings the propagules of aquatic species. The first summer after a steep hillside is de-stocked and left, you will find plants that have not grown there within living memory emerging from a seed bank that was waiting, patient and ready, for exactly this moment.

This is what natural regeneration actually is. Not a conservation project with a five-year plan and a monitoring protocol and a team of ecologists taking quadrat measurements every spring. It is the release of a biological system that has been under compression, that has been held back by the weight of economic logic from expressing itself, and that, the moment the weight is lifted, begins immediately to do what it evolved over 350 million years to do.

The system does not need managing after that. It needs to be protected from being returned to the exploited state. That protection is provided, automatically and continuously, by the fiscal structure. As long as LVT makes intensive farming of sub-marginal land economically irrational, the land stays wild. Conservation does not have to buy it, monitor it, manage it, or fight to protect it year after year. The economics do the work.

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The Cascade That Changes Everything

The consequences run further than the land itself. Land Value Tax in urban areas, where site values are highest, makes it prohibitively expensive to hold land idle or in low-value uses. Derelict sites, car parks, underused commercial plots: all of these become development candidates as the annual tax on their potential value makes speculation unviable. The result is denser, more walkable cities that need less land to house the same population, generating less pressure on the countryside surrounding them. Less urban sprawl means more land available for natural processes on the urban fringe. More compact cities mean viable public transport, which means fewer cars, which means less road, less car park, less of the grey infrastructure that currently fragments habitats and kills millions of animals a year.

The fiscal logic of LVT is self-reinforcing in ways that compound the ecological benefit. Investment in urban public transport raises land values along its routes. LVT recaptures those values for the public purse, funding further transport investment. The cycle is self-financing. At the same time, taxes on income and wages fall, because LVT replaces them as the primary source of public revenue. The cost of labour falls. The cost of enterprise falls. The cost of building and improving property falls. Work becomes cheaper. Land becomes expensive. Overnight, the incentive structure that has governed the British relationship with land for three centuries reverses.

The families who are currently priced out of housing by the speculative inflation of land values, who spend sixty percent of their income on rent in cities they cannot afford to live in, who cannot move to the rural areas where land is cheaper because there is no work there and the trains do not run, become beneficiaries rather than victims of the reform. They are not landowners. They have no stake in rising land values. They are paying the cost of a system that benefits primarily those who already own. LVT is, in this sense, the most progressive fiscal reform available in Britain: it transfers wealth from those who own land to those who work and build and create things, and it does so through the same mechanism that generates the ecological outcomes this piece has been arguing for.

This is what a genuinely green economy looks like. Not a carbon credit market designed by the City of London to allow airlines to keep flying while paying a consultant to plant trees on a Scottish peat bog. Not a biodiversity net gain scheme that requires a specialist ecologist to navigate and a local authority ecologist to monitor, neither of which exist in sufficient numbers to make the system function. A simple, direct, well-understood fiscal mechanism that aligns the private interests of millions of individual landowners with the ecological interests of the country and the economic interests of everyone who is not a landowner. The elegance of it is its greatest virtue. You do not need to manage nature. You need to create the conditions under which managing nature is the rational choice. LVT creates those conditions.

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What I Have Learned

I held a baby beaver once, at Wildwood, a few days after it was born. It was the size of a guinea pig, warm and calm, entirely indifferent to my identity and my career and my three decades of arguments. It would grow up to reshape a section of a British river that had been ecologically dead for decades, building wetland infrastructure more effective than anything a million pounds of engineering could construct, working for nothing, requiring no monitoring protocol or stakeholder engagement process.

What that animal needed from me was not a management plan. It needed the economic conditions in which its existence was possible. It needed land along a river where the pressure to keep the water channelled and the banks mowed had been lifted. It needed the incentive structure to have changed enough that a landowner could look at a wet, scrubby, unmown river corridor and see it as an asset rather than a liability.

That is what Land Value Tax delivers, and no other mechanism delivers it. Not biodiversity net gain, which is a permission slip for destruction dressed up as mitigation. Not carbon credits, which are increasingly a tool for greenwashing and for pricing conservation organisations out of the land market by turning marginal land into a speculative financial instrument. Not agri-environment payments, which are rent we pay to landowners to do slightly less damage than they would otherwise do, against the grain of the underlying incentive structure that makes the damage rational in the first place.

The only mechanism that makes natural regeneration the economically rational default across the whole of sub-marginal British land, that does not require continuous public expenditure to sustain, that scales without limit, that removes the economic logic of destruction rather than trying to purchase its mitigation, is a tax on the site value of land. Everything else is a sticking plaster on a wound that requires surgery.

The wildlife is losing. Badly. It has been losing for the entirety of my working life, across the entirety of the conservation movement’s modern existence, despite more legislation, more reserves, more schemes, more rhetoric, more international commitments than at any point in history. England has lost 40% of its species abundance since 1970. Priority species, the ones we tried hardest to protect, have lost 80%.

There is a solution. It is not complicated. It is not politically impossible, though it is politically uncomfortable, which is a different thing entirely. Almost nobody in the environmental movement wants to talk about it, because talking about it means confronting the economic structures that fund their organisations and employ their donors.

We cannot save our wildlife inside an economy that profits from destroying it. That is the root. We need to stop hacking at the branches and strike it.