Plant 60 Million Trees a Year
Liberal Democrat · what the evidence says
An independent, source-checked look at Liberal Democrat’s policy “Plant 60 Million Trees a Year” — what it would actually do across the things that affect your life. Every claim below quotes the source behind it. How this works.
Public finances & the next generation — Hurts
moderate · moderate confidence
Planting 60 million trees a year would require roughly £815 million or more in government grants annually, adding to public spending without a stated funding source. This worsens near-term public finances, though long-term carbon and economic benefits could partially offset costs if planting succeeds at scale.
The evidence
- The policy commits to planting at least 60 million trees a year to restore woodland habitats and reach net zero, but specifies no funding mechanism or budget. — libdems.org.uk (manifesto) — “Plant at least 60 million trees a year, helping to restore woodland habitats, increase the use of sustainable wood in construction, and reach net zero.”
- Meeting the UK-wide target of 30,000 hectares per year — comparable in scale — could require around £815 million of government support annually, totalling at least £4 billion over five years. — publications.parliament.uk (government) — “The cost of meeting the UK-wide target of 30,000 hectares per year could require around £815 million of government support annually, totaling at least £4 billion over a five-year period”
- Sufficient government grants are needed to incentivise landowners to convert agricultural land to forestry, meaning public expenditure is a prerequisite. — publications.parliament.uk (government) — “sufficient government grants are needed to incentivize landowners to convert agricultural land to forestry”
- The UK has consistently missed even its more modest planting targets in recent years, meaning delivery risk is high and any public spend could fail to achieve the stated goal. — carbonbrief.org (media) — “The UK has consistently missed its more modest targets in recent years, making the leap to 60 million trees (or 30,000 hectares) a significant challenge”
- Sapling losses during drought exceeded 22% in taxpayer-funded schemes, raising costs and reducing value for money. — naturalworldfund.org.uk (media) — “Over 22% of taxpayer-funded saplings died during a recent drought, with some projects experiencing up to 40% loss”
- Woodland creation at the recommended scale of 30,000 hectares per year could eventually absorb approximately 10% of the UK's residual greenhouse gas emissions by 2050, which could reduce long-run climate-related fiscal costs. — forestresearch.gov.uk (government) — “This level of planting could absorb approximately 10% of the UK's residual greenhouse gas (GHG) emissions by 2050, equating to over 12 million tonnes of CO2 equivalent (MtCO2e) annually”
- Investing in woodland could create up to 36,000 new jobs and add £366 million to the economy, partly offsetting fiscal costs over time. — forbes.com (media) — “investing in woodland could create up to 36,000 new jobs across the country, particularly during the restoration phase, and add £366 million to the economy”
Biggest unknown: Whether the policy is fully funded or deficit-financed is unstated; a credible funding source would materially change the verdict.
Our reading: The central fiscal question for O12 is whether this policy is funded or deficit-financed, and whether any borrowing finances consumption or productive investment. The policy text contains no stated funding mechanism. Independent costing evidence (E17) places the annual government support needed for a comparable planting scale at around £815 million per year — at least £4 billion over a parliament. That is a material call on public expenditure. Without a credible offsetting revenue source or spending reduction, this worsens the near-term fiscal position and the debt path. The policy does have long-run productive characteristics: woodland creation absorbs carbon (E5), supports jobs (E13), and reduces climate-related costs that would otherwise fall on future public finances. These are real, evidence-backed benefits, but they accrue over decades (E6 notes a 10–30 year lag before substantial CO2 absorption), while the spending cost lands immediately. There is also a significant delivery risk: the UK has repeatedly missed even its less ambitious planting targets (E38), the NAO has doubted government capacity (E35), and sapling losses in drought conditions exceed 22% (E45), all of which reduce value-for-money. On balance, the immediate fiscal effect is a substantial unfunded spending commitment — a near-term worsening of the debt path. The long-run productive investment case is real but uncertain and slow-materialising, and is not sufficient under the evidence provided to flip the verdict. The direction is 'worsens' at moderate magnitude over the this-parliament horizon, with moderate confidence reflecting genuine uncertainty about funding arrangements and delivery.
Prosperity & living standards — Mixed picture
minor · moderate confidence
Planting 60 million trees a year could support jobs, timber supply, and long-term productivity gains, but the economic benefits are modest and long-dated, delivery faces serious capacity constraints, and the policy's scale has never been achieved in the UK. Near-term costs are real; gains mostly land after a decade or more.
The evidence
- The policy commits to planting at least 60 million trees a year, increasing sustainable wood use in construction, and reaching net zero. — libdems.org.uk (manifesto) — “Plant at least 60 million trees a year, helping to restore woodland habitats, increase the use of sustainable wood in construction, and reach net zero.”
- In 2024-25, approximately 15,700 hectares of new woodland were created across the UK — about half the existing 30,000 hectares annual target, which is itself equivalent to roughly 60-90 million trees. — forestryjournal.co.uk (media) — “In the 2024-25 planting season, approximately 15,700 hectares of new woodland were created across the UK, which is about half of the 30,000 hectares annual target”
- UK woodland cover stands at 13-14% in 2022-2024, significantly below the European average of 35-42%. — forestryjournal.co.uk (media) — “UK woodland cover has increased from 9% in 1980 to 13-14% in 2022-2024, still significantly lower than the European average of 35-42%”
- The total asset value of UK woodlands is estimated at £351.4 billion, with non-market benefits far exceeding timber value. — ons.gov.uk (government) — “ONS also estimates the total asset value of UK woodlands at £351.4 billion in 2020, with non-market benefits (like recreation and carbon sequestration) vastly exceeding timber value”
- Investing in woodland at scale could create up to 36,000 new jobs and add £366 million to the economy, particularly during restoration. — forbes.com (media) — “investing in woodland could create up to 36,000 new jobs across the country, particularly during the restoration phase, and add £366 million to the economy”
- Using timber products in buildings locks up carbon and can substitute carbon-intensive materials like steel and concrete, supporting construction productivity. — confor.org.uk (media) — “Using timber products in buildings locks up carbon for longer and can substitute carbon-intensive materials like steel and concrete”
- Meeting the UK-wide 30,000 hectares per year target could require around £815 million of government support annually, totalling at least £4 billion over five years. — publications.parliament.uk (government) — “The cost of meeting the UK-wide target of 30,000 hectares per year could require around £815 million of government support annually, totaling at least £4 billion over a five-year period”
- New woodlands typically take 10 to 30 years to start absorbing substantial CO2, meaning economic and climate benefits are long-dated. — forestresearch.gov.uk (government) — “New woodlands typically take 10 to 30 years to start absorbing substantial amounts of CO2, meaning immediate emissions reductions in other sectors remain critical for the 2050 net-zero target”
- Scaling up requires a substantial increase in skilled foresters and nursery capacity, which takes time and investment. — confor.org.uk (media) — “Scaling up tree planting requires a substantial increase in skilled foresters and nursery capacity, which takes time and investment”
- Over 22% of taxpayer-funded saplings died during a recent drought, with some projects experiencing up to 40% loss, raising costs. — naturalworldfund.org.uk (media) — “Over 22% of taxpayer-funded saplings died during a recent drought, with some projects experiencing up to 40% loss”
- The UK has consistently missed more modest planting targets in recent years, making the leap to 60 million trees a significant challenge. — carbonbrief.org (media) — “The UK has consistently missed its more modest targets in recent years, making the leap to 60 million trees (or 30,000 hectares) a significant challenge”
- Strategic tree planting can boost local economies by improving air quality and increasing high-street spending, with consumers paying 9-12% more in tree-lined shopping areas. — forbes.com (media) — “consumers willing to pay 9-12% more in tree-lined shopping areas”
Biggest unknown: Whether funding, workforce, nursery capacity, and landowner incentives can be assembled to hit the target at all — the UK has consistently missed far more modest planting goals.
Our reading: On O13 — real living standards, productivity, business investment, and economic opportunity — this policy delivers a genuinely mixed picture, with effects diverging sharply by time horizon. Near-term, the policy imposes real costs: annual government support of ~£815m is required (E17), land is diverted from agricultural use requiring attractive incentives (E43), and delivery faces binding constraints in workforce, nursery capacity (E42), and sapling survival rates in adverse weather (E45). The UK has not come close to hitting even half the implied target in recent years (E26, E38), so near-term economic output from the policy may be modest relative to its fiscal cost. Longer-term (10yr+), the economic case is more positive but still modest in aggregate. The timber and construction strand (E15) supports domestic supply chains and could reduce dependence on carbon-intensive imported materials — a real productivity gain, though its scale is not independently quantified in the evidence. Job creation projections (up to 36,000 jobs, £366m added to the economy per E13) are advocacy-sourced (UK100/Queen's University Belfast) and should be treated as an upper-bound estimate rather than a central one. Urban planting effects on local economies and property values (E18, E19) are real but commercially sourced and site-specific. The net-zero contribution (E3, E4, E5) supports long-run economic resilience — avoiding climate damage is a genuine living-standards benefit — but that gain is diffuse, long-dated, and shared with other policies; it is not a distinct O13 gain attributable to this policy alone. Overall: near-term fiscal cost and delivery risk pull against modest long-run supply-side and environmental productivity gains. The balance is 'mixed/minor' — real upsides exist but they are long-dated, uncertain in delivery, and unlikely to move aggregate living-standards indicators materially at population scale within a parliament.
Clean environment & nature — Helps
moderate · moderate confidence
Planting 60 million trees a year would meaningfully help nature, biodiversity, and long-term carbon removal — but the benefits take decades to fully materialise, and the UK has consistently missed far more modest planting targets, making delivery the biggest question.
The evidence
- The policy commits to planting at least 60 million trees a year to restore woodland habitats and reach net zero. — libdems.org.uk (manifesto) — “Plant at least 60 million trees a year, helping to restore woodland habitats, increase the use of sustainable wood in construction, and reach net zero.”
- The 60 million trees target equates to approximately 20,000–25,000 hectares annually, below the UK government's own broader target of 30,000 hectares per year. — forestresearch.gov.uk (government) — “This target translates to approximately 20,000-25,000 hectares annually, assuming a planting density of 2,000-3,000 trees per hectare, which is slightly lower than the government's broader UK-wide target of 30,000 hectar…”
- In 2024-25, the UK planted approximately 15,700 hectares of new woodland — about half of the existing 30,000 hectares annual target. — forestryjournal.co.uk (media) — “In the 2024-25 planting season, approximately 15,700 hectares of new woodland were created across the UK, which is about half of the 30,000 hectares annual target”
- UK woodland cover has increased from 9% in 1980 to 13–14% in 2022–2024, still well below the European average of 35–42%. — forestryjournal.co.uk (media) — “UK woodland cover has increased from 9% in 1980 to 13-14% in 2022-2024, still significantly lower than the European average of 35-42%”
- The Committee on Climate Change recommends planting around 30,000 hectares annually until 2050 as necessary for the UK to meet net-zero goals. — assets.publishing.service.gov.uk (government) — “The Committee on Climate Change (CCC) has recommended planting around 30,000 hectares of new woodland annually until 2050 to help the UK meet its net-zero emissions target”
- This level of planting could absorb approximately 10% of the UK's residual greenhouse gas emissions by 2050, equating to over 12 million tonnes of CO2e annually. — forestresearch.gov.uk (government) — “This level of planting could absorb approximately 10% of the UK's residual greenhouse gas (GHG) emissions by 2050, equating to over 12 million tonnes of CO2 equivalent (MtCO2e) annually”
- New woodlands typically take 10 to 30 years to start absorbing substantial amounts of CO2, so near-term emissions reductions depend on other sectors. — forestresearch.gov.uk (government) — “New woodlands typically take 10 to 30 years to start absorbing substantial amounts of CO2, meaning immediate emissions reductions in other sectors remain critical for the 2050 net-zero target”
- Well-designed new woodlands provide vital habitats supporting increased biodiversity for a wide array of plants and animals. — assets.publishing.service.gov.uk (government) — “Well-designed new woodlands provide vital habitats, supporting increased biodiversity for a wide array of plants and animals”
- Using timber products in buildings locks up carbon for longer and can substitute carbon-intensive materials like steel and concrete. — confor.org.uk (media) — “Using timber products in buildings locks up carbon for longer and can substitute carbon-intensive materials like steel and concrete”
- The NAO has expressed doubts about government capacity to meet planting targets, noting rates in 2022-23 were less than half the required 30,000 hectares per year. — publications.parliament.uk (government) — “The NAO has previously expressed doubts about the government's capacity to meet its tree planting targets, noting that rates in 2022-23 were less than half the required 30,000 hectares per year”
- The Institute of Chartered Foresters considers national targets 'on the edge of realistic'. — positive.news (media) — “The Institute of Chartered Foresters considers national targets "on the edge of realistic"”
- Scaling up tree planting requires a substantial increase in skilled foresters and nursery capacity, which takes time and investment. — confor.org.uk (media) — “Scaling up tree planting requires a substantial increase in skilled foresters and nursery capacity, which takes time and investment”
- Over 22% of taxpayer-funded saplings died during a recent drought, with some projects experiencing up to 40% loss, increasing replanting costs. — naturalworldfund.org.uk (media) — “Over 22% of taxpayer-funded saplings died during a recent drought, with some projects experiencing up to 40% loss”
- Meeting the UK-wide 30,000 hectares-per-year target could require around £815 million of government support annually, totalling at least £4 billion over five years. — publications.parliament.uk (government) — “The cost of meeting the UK-wide target of 30,000 hectares per year could require around £815 million of government support annually, totaling at least £4 billion over a five-year period”
Biggest unknown: Whether funding, nursery capacity, skilled labour, and land incentives can be secured to actually deliver 60 million trees annually, given the UK reached only about half its existing 30,000 hectares-per-year target in 2024-25.
Our reading: The policy targets 60 million trees a year — equivalent to roughly 20,000–25,000 hectares annually — which aligns with and slightly exceeds the CCC's recommended trajectory for woodland creation as part of net-zero. If delivered, independent projections suggest this scale of planting could absorb around 10% of residual UK emissions by 2050 and provide meaningful biodiversity benefits through restored woodland habitats. The additional sustainable timber strand could lock up further carbon by displacing steel and concrete in construction. These are genuine, evidence-backed environmental gains on O6's core indicators: emissions trajectory, biodiversity, and long-term climate sustainability. However, the long time-lag (10–30 years before substantial CO2 absorption) means near-term environmental impact is limited; the gains are firmly long-term. More critically, delivery is the central problem. The UK planted only about half its existing, less ambitious 30,000 hectares-per-year target in 2024-25, and both the NAO and the Institute of Chartered Foresters have flagged serious doubts about capacity. Funding uncertainty, nursery and workforce shortages, land availability, and sapling mortality from drought (over 22% in a recent drought) all constrain realistic delivery. Meeting even the existing UK target costs an estimated £815 million per year in government support. The direction is nonetheless 'improves' because the mechanism is well-evidenced (trees sequester carbon, restore habitats, improve biodiversity), the CCC explicitly endorses this scale, and even partial delivery would move the indicators positively. The magnitude is 'moderate' rather than 'major' because: (a) full delivery is uncertain given persistent historical shortfalls; (b) the near-term climate contribution is modest given the 10–30 year time-lag; and (c) the policy is closer to the CCC minimum recommendation than a step-change above it. Confidence is moderate, not high, because delivery risk is substantial and the evidence on real-world execution is discouraging.