Quercus Project · Huertify

The forest comes back on its own. Until it can't.

Holm oak, cork oak and Pyrenean oak resprout after fire: they have been doing it for millennia. The trouble starts when that mechanism breaks down — fires every few years, blazes so severe they leave neither seed nor seed tree, soil turned to ash. There the forest no longer returns on its own, and replanting fails too: in dry Mediterranean areas more than half of what is planted can die. The Quercus Project is about exactly those places.

Let's start with what is true

Because the usual “let's plant trees” pitch gets the diagnosis wrong, and getting it wrong there wastes money and time.

Iberian Quercus are resprouters. Cork oak resprouts from buds protected beneath the bark — even on the trunk and branches — and holm oak from dormant buds at the root and root collar. That is no accident: it is an adaptation to woodland that has always burned.1 In a fire of ordinary intensity, with surviving adult trees nearby, these trees come back without anyone planting them. A study in Sierra Nevada found 801 holm oaks regenerating in the first year after fire in a burnt pine plantation.2

Starting point

The first technical decision is usually not to plant.

If there is resprouting and there are seed trees nearby, planting means spending public money getting in the way of a forest that is already coming back. Any serious restoration project starts by checking whether it is needed at all. This project only makes sense where the answer is yes.

And when is the answer yes? When the regeneration machinery has genuinely broken down. Recurrent or very high-severity fires can exhaust resprouting capacity and wipe out both the seed bank and the seed trees at once: the result is sites with very low natural regeneration potential.3 Add to that the loss of soil — severe fire strips away the litter layer that protected it from erosion3 — and rising aridity that threatens holm oak regeneration from seed.4

There, and only there, planting is called for. And there the quality of the stock decides whether the money achieves anything.

Where it has already broken down

This is not a future scenario. It is the map of the last ten years in north-west Spain.

382,607 ha
estimated by satellite as burned in Spain in 2025: the largest figure in the EFFIS series, which begins in 2006. The previous maximum was 306,555 ha in 2022; in 2024 it was 42,615.
EFFIS · Copernicus 5
227,730 ha
burned in the province of Ourense over the last decade: the highest in Spain. Twelve municipalities have lost more than half their surface to fire in that period.
Provincial count · 2016–2026 6
1/3
of the burned areas in Ourense are considered unable to recover unaided: where the fire was most severe, the soil can be left as pure ash.
Technical assessment · 2025 7

That is the pattern that breaks regeneration: not one fire, but the same hillside burning over and over before the resprouts ever reach seed-bearing age. In 2025 the Xunta de Galicia put the area burned in Galicia at 118,966 ha, with Ourense accounting for around 86 % of it.8 The summer of 2026 has again left major fires in Ávila, León and Segovia, and in the Sierra Oeste of Madrid.9

And when planting does happen, it is often done badly: a project-scale study in a Mediterranean dryland measured 53 % short-term mortality, with post-planting drought and herbivory as the main causes. Depending on species and site, survival ranges from 5 % to 53 %.10

A note on method: EFFIS satellite figures and official national or regional statistics do not match, because they do not measure the same way. They are cited separately, each with its source, and never added together.

What Huertify brings

Not a new idea of what a nursery is, but a control system that already exists, applied to raising stock that survives its first summer.

The technical finding the project rests on is well known and well documented: Quercus seedlings establish better under the shade and shelter of another plant — what ecologists call facilitation, or the “nurse plant” effect. Shading is one of the main mechanisms behind that improvement, and the effect is greater in dry years. But afterwards, the same seedling needs light in order to develop.11

In other words: the requirement is not fixed, it changes over time. A nurse shrub provides shade, but it does not withdraw it when that becomes useful. In a controlled system shade is just another parameter — like irrigation, climate or nutrition — and it can be moved along the calendar.

Fig. 1 · Shade first, light later
more less SHADE THAT HELPS LIGHT IT NEEDS 01 Acorn 02 Shade 03 Hardening 04 Field
Qualitative curves, not measured data: they show the direction of the requirement, not a magnitude. Shade is not indispensable — these trees germinate and resprout unaided — but it improves establishment, especially in dry years. What a controlled nursery adds is the ability to move that parameter over time, and to deliver stock already accustomed to the light it will meet.
Programmed shade

The nurse plant, as a parameter

Shading is programmed batch by batch and withdrawn gradually up to full light, instead of depending on a shrub happening to be in the right spot. The stock leaves the nursery hardened off.

Nutrition and substrate

What each species asks for

Nutrition targeted by species and by phase. It includes nursery mycorrhization, using the protocols already published for holm oak and cork oak — without promising field results, see below.12

Engineering Deck

Every batch, with a record

The software that already runs the growing hubs tracks each batch: cameras and thermal cameras, growth monitoring and provenance traceability. That is what makes measurement possible afterwards.

Two further decisions. Local provenance: we do not raise “holm oak” in the abstract, but the holm oak of that district, to return it to that district. And two-year-old stock for cork oak on dry, sandy soils, which is what the literature recommends over one-year stock.13

SpeciesScientific nameResprouts after fireWhen planting is needed
Holm oakQuercus ilexYes, from dormant buds at the root and root collar.When fire returns before the resprouts bear acorns, or when aridity prevents regeneration from seed.
Cork oakQuercus suberYes, and exceptionally so: from buds protected beneath the cork, even on trunk and branches.Where no adult trees remain to resprout, or where cork oak decline has emptied the stand.
Pyrenean oakQuercus pyrenaicaYes, strongly, including from the roots.In the north-west, where fire recurrence over the last decade has been highest and soil has been lost in the most severe blazes.
Portuguese oakQuercus fagineaYes.In the transition between holm oak and deciduous oak woodland, on degraded soil with no seed trees nearby.

The method is not limited to the genus Quercus: it is the best-documented case, which is why it gives the project its name. It extends to whichever native species is appropriate in each area.

Why now

For the first time, restoration is not a good intention: it is a legal obligation with deadlines.

Obligation

Regulation (EU) 2024/1991

The Nature Restoration Regulation has applied since 18 August 2024. It requires measures covering at least 20 % of land and sea by 2030, and all ecosystems in need of restoration by 2050.14

Volume

3 billion trees

Member States must contribute to the Union target of planting at least 3 billion additional trees by 2030, and submit national restoration plans with milestones for 2030, 2040 and 2050.14

Money available

Post-fire restoration

Restoration work after major fires has its own legal basis in Spain — article 50 bis, introduced by Royal Decree-Law 15/2022 — and treatments, erosion-control works and replanting are subsidised with regional and PEPAC/EAFRD funds.15

With an uncomfortable consequence: if a wave of planting is going to be financed with public money, the real risk is planting a great deal, badly, and burying half of it again. The value of this project is precisely that: that whatever is planted where it is needed should live.

How it sustains itself (and why it is not a business)

This project is not designed to maximise return. Better said now than later, and with numbers.

What the numbers say

Selling forest stock does not make money.

Tray-grown forest stock retails at roughly €0.80 to €2 a unit, and less in volume tenders.16 And the main buyer supplies itself: Spain's regional governments run their own public nursery networks — Andalusia is investing close to €8M through 2029 to produce some 4.3 million plants; Extremadura runs five nurseries with around 130 exclusively native species.17

A controlled-environment nursery, with climate control, programmable shading, tracking software and a two-year cycle, cannot compete on euros per plant against that. Any plan promising otherwise is either lying or has not looked at the market.

What can sustain it is something else: not selling plants, but selling their survival — and being funded as what it is, a project in the public interest.

Route 01

Public restoration funding

Post-fire and depopulation-challenge restoration funding, and European programmes such as LIFE. It is the natural route: the beneficiary is the woodland, and who pays for woodland is the public purse.

Primary
Route 02

Restoration with measured survival

Companies offsetting their footprint already pay to reforest in Spain, and today they buy trees planted. The gap is selling them trees alive after three years, verified. That requires traceability: exactly what the software provides.18

Differentiator
Route 03

Registered CO₂ absorption

Projects entered in Spain's MITECO registry, with the 30-year minimum permanence the rules demand. Slow, and it requires long agreements over land that is not ours.19

Long term

If this works, the outcome is not a large company: it is a published protocol that any nursery, public or private, can apply. That is consistent with how Huertify was founded — and with what its founding letter says — even if it is bad for the valuation.

The per-unit numbers — cost of rearing, price per plant, survival at three years — have not been measured. They will be published with their method once the pilot trial runs. There is no financial projection on this page because there would be nothing to build one from yet.

The plan, in phases

Each phase unlocks the next with data, not promises. And phase 02 includes what is almost never done: a control.

Phase 01

Choose the site properly

Identify plots where natural regeneration really has broken down — high recurrence, no seed trees, severely damaged soil — and rule out those that recover unaided. Raise the first batch of one species and one provenance.

Diagnosis
Phase 02

Measure against a control

Plant the controlled batch alongside one from a conventional nursery: same seed origin, same plot, same day. Measure survival at the first and third summer and publish the method. If the controlled batch does not win, we say so.

Real data
Phase 03

Publish and replicate

With the protocol validated, publish it and replicate by district and species. Growth means adding small nurseries close to their destination, not one large plant.

Open

What the funding is used for

Indicative split of the work in the first phase, focused on building the pilot nursery and measuring the trial. Amount: to be defined

Controlled nursery: programmable shading, climate and irrigation35 %
Forestry module of the Engineering Deck, and traceability20 %
Field trial with a control, and measurement over three years20 %
Seed, provenances and mycorrhization15 %
Plot diagnosis and agreements with landowners10 %

A split of the work, not a closed budget. Specific financial figures are provided in the dossier.

Where we start from

Honest about the stage: a new project, with no field trial yet. What is already built and reused:

What we do not promise
  • That these trees cannot grow without us. They can, and they do. The project is confined to sites where regeneration is demonstrably broken.
  • That mycorrhization guarantees survival. Nursery protocols are well established, but the field evidence is uneven: work by IRNAS-CSIC found neutral or negative effects in Quercus seedlings in a context of cork oak decline.20 That is why the trial has a control: to measure it, not to assume it.
  • That a better nursery fixes a badly executed planting. Stock quality is one factor, not the only one: without soil preparation, herbivory control and a decent weather year, no plant survives.
  • Market financial returns. For the reasons above: the price of forest stock and public self-supply do not allow for it. Anyone looking for profitability has better places to put it.
  • Per-unit figures. Cost, price and survival will be published once measured, with their method.

How to take part

Let's talk, with the cards face up

We are looking for three things: land where regeneration really has broken down, funding — public or impact — for the pilot nursery and the trial, and people who know their trade: forestry engineering, restoration ecology. If you are here for market returns, please read the previous section first.

Disclaimer. This page is for information only and does not constitute an offer, invitation or recommendation to invest, nor financial advice. Any investment round open to the public would be carried out, where applicable, through a crowdfunding platform authorised by the CNMV, in accordance with Regulation (EU) 2020/1503. The objectives set out here are estimates subject to uncertainty, and the per-unit data have not yet been measured. Investing in early-stage companies carries the risk of total loss of capital and of illiquidity.

Notes and sources
  1. Resprouting strategies of Mediterranean Quercus: cork oak (Q. suber) resprouts from buds protected beneath the cork, including on the trunk and main branches, and holm oak (Q. ilex) from dormant buds at the root and root collar after the main stem dies. This is understood as an adaptation to a regime of intense, recurrent fire.
  2. Post-fire regeneration of holm oak in Mediterranean pine plantations (Sierra Nevada): in the first year after the fire, 801 holm oaks were recorded, either post-fire resprouts or acorns dispersed immediately after the fire.
  3. Literature on recurrence and severity in Pinus–Quercus communities: frequent or high-severity fires can exhaust regeneration capacity and eliminate both the seed bank and the seed trees, producing sites with low natural regeneration potential; severe fires remove the litter layer that protects soil from erosion.
  4. Increasing aridity threatens the sexual regeneration of Quercus ilex (holm oak) in Mediterranean ecosystems.
  5. European Forest Fire Information System (EFFIS, Copernicus programme): 382,607 ha estimated in Spain in 2025, the largest figure in the system's series, which began in 2006; previous maximum of 306,555 ha in 2022 and 42,615 ha in 2024. These are remote-sensing estimates, not official statistics.
  6. Provincial count of area burned in Ourense over the last decade (2016–2026): 227,730 ha, the highest in Spain; twelve municipalities have lost more than 50 % of their surface to fire in that period. The same source puts the share of deliberately set fires in the province at 77.79 %.
  7. Technical assessment reported in the local press (2025) on the burned areas of Ourense: around a third are considered unable to recover unaided, with severely damaged soil.
  8. Xunta de Galicia: 118,966 ha burned in Galicia in 2025, with Ourense accounting for around 86 % of that area. This is an official regional figure, not directly comparable with the EFFIS estimate in note 5.
  9. Recovery plans and aid for the areas affected by the fires of summer 2026 in Ávila, León and Segovia (Junta de Castilla y León) and in the Sierra Oeste of Madrid (Comunidad de Madrid).
  10. Assessing reforestation failure at the project scale: the margin for technical improvement under harsh conditions. A case study in a Mediterranean Dryland (Science of the Total Environment, 2021): high plantation mortality, with a short-term rate of 53 %; extreme post-planting drought and herbivory are among the main causes. Survival reported in the literature for Mediterranean plantings ranges roughly between 5 % and 53 % depending on species and site.
  11. Cuesta et al., Journal of Ecology (2010), “Facilitation of Quercus ilex in Mediterranean shrubland”, and associated restoration literature on Mediterranean hillslopes: shading by nurse shrubs is one of the main mechanisms improving establishment, with a greater effect in dry years, while subsequent seedling development requires light.
  12. CICYTEX (Junta de Extremadura), Protocols for the production of mycorrhized holm oak and cork oak stock; and MITECO, Nursery mycorrhization techniques.
  13. iForest — Biogeosciences and Forestry 13: 114-123 (2020), “Using field and nursery treatments to establish Quercus suber seedlings in Mediterranean degraded shrubland”: two-year-old stock is recommended to improve survival and drought resistance on dry, sandy soils.
  14. Regulation (EU) 2024/1991 of the European Parliament and of the Council of 24 June 2024 on nature restoration; in application since 18 August 2024. Restoration measures covering at least 20 % of land and sea areas by 2030 and all ecosystems in need of restoration by 2050; contribution to the Union target of planting at least 3 billion additional trees by 2030; national restoration plans with milestones for 2030, 2040 and 2050.
  15. Royal Decree-Law 15/2022, which introduced article 50 bis into Spain's Forestry Act 43/2003 on forest and environmental restoration work; and regional and PEPAC/EAFRD aid lines subsidising the restoration project, silvicultural treatments to recover vegetation cover, soil-retention works and replanting.
  16. Reference prices for tray- or plug-grown forest stock at Spanish retail nurseries: approximately €0.80 to €2 per unit depending on species, size and quantity. Prices are lower in volume tenders.
  17. Andalusian Nursery Network (Regional Ministry of Sustainability and the Environment): more than 70 species native to Andalusian ecosystems, with an announced investment of close to €8 million through 2029 to produce some 4,300,000 plants. Extremadura's forest nursery network: five publicly managed nurseries producing exclusively native stock, around 130 species.
  18. Spanish operators in footprint offsetting and “corporate woodlands” that register their projects in MITECO's Carbon Footprint Registry. The dominant commercial model is built around the tree planted, not around verified survival over several years.
  19. MITECO's Registry of carbon footprint, offsetting and carbon dioxide absorption projects, created in 2014 and governed by Royal Decree 214/2025 of 18 March. Absorption projects require a minimum permanence of 30 years and must have started after the 2012-2013 planting season; short-cycle species are excluded. Registration carries no direct cost from the administration. From 2026, Spain's central public administration sector must register its carbon footprint annually together with a reduction plan.
  20. IRNAS-CSIC (Institute of Natural Resources and Agrobiology of Seville): in Quercus seedlings affected by cork oak decline, the effects of mycorrhizae were neutral or negative, never positive, and endomycorrhizae had more effect than ectomycorrhizae. Cited explicitly as a limit on what this project can promise.

Figures on this page are cited with their source and their date. Where sources disagree — satellite versus official statistics — we say so, and we do not mix them. The project's own data do not exist yet: they will be published once measured.