Industrial hemp is legal, but only for fiber, grain, and seed
Cultivating hemp in Spain is fully legal as long as certified varieties registered in the European Union Common Catalogue are used, the agricultural activity is declared to the autonomous community, and the use is limited to fiber, grain, or seeds. That is where the safe ground ends. As soon as the crop is intended for another purpose—notably, the use of flowering tops to extract CBD—the Administration’s criteria is that prior authorization from the AEMPS is required, and this authorization is mandatory even when using certified seed. This is the trap that ruins most projects in the sector: having all agricultural paperwork in order does not cover the eventual use of the flower.
Industrial hemp is experiencing an agricultural renaissance in Spain, driven by the demand for fiber, construction materials, and cannabidiol derivatives. However, it is also one of the most poorly explained crops: available information mixes the European agricultural framework with the narcotics regime, and many farmers discover the difference only when the harvest is already in the warehouse. In this guide, we explain exactly what the regulations allow, what procedures must be completed, where the line is that should not be crossed, and what options exist for those who want to go beyond industrial use.
What industrial hemp is legally
Hemp and marijuana are the same botanical species, Cannabis sativa L. What separates them is not biology but tetrahydrocannabinol content and, above all, the legal regime applied to them. The 1961 Single Convention on Narcotic Drugs, incorporated into Spanish law through Law 17/1967, controls cannabis and its resin, but excludes cultivation intended exclusively for industrial and horticultural purposes from that control.
All European hemp agriculture rests on that exception. Within the Union’s agricultural framework, Regulation (EU) 2021/2115 sets the threshold for the plant in the field at 0.3% THC for the crop to be eligible, a limit that replaced the previous 0.2%. This should not be confused with the reference required later for the final marketed product, which in Spanish practice is stricter and which we elaborate on in whether it is legal to sell CBD in Spain.
The exception that makes hemp legal is not a plant exception: it is a purpose exception. The cultivation remains outside of control only as long as it is intended for industrial purposes. The day the purpose changes, the protection disappears even if the plant and the seed remain exactly the same.
“The most repeated error in this sector is assuming that legality lies in the seed. People show me the variety certificate as if it were a safe-conduct, and it is not. The certificate proves that the plant is what it claims to be; it does not authorize what you are going to do with it later. When I explain this in a first meeting, I almost always see faces of surprise, and on more than one occasion, the surprise comes when the project is already funded and sown. That is why I insist so much that the legal conversation must happen before sowing, not after the harvest.”
The actual procedures for a legal crop
There is no license, there is traceability
For the industrial cultivation of fiber, grain, and seed, a specific hemp license is not requested: ordinary agricultural regulations are followed and every step is documented. The difference from other crops lies in the level of proof that should be maintained.
What protects a hemp farmer is not a permit, but a complete file: certified seed, invoices, labels, sowing rates, agricultural declaration, and communication to the authorities. Without that documentary support, a routine check becomes a problem.
Certified seed of an approved variety
Only varieties registered in the European Union Common Catalogue of Varieties of Agricultural Plant Species. Official labels from the packaging and purchase invoices must be kept: they are the documentary proof of the variety used.
Registration of agricultural activity
Registration as a farmer and registration of the farm in accordance with the requirements of the corresponding autonomous community, which may add its own requirements to the state and European framework.
Declaration of the crop and plots
Agricultural declaration identifying the sown plots, surface area, and sowing rate used. This is also the procedure that provides access to Common Agricultural Policy aid when the crop meets the eligibility requirements.
Communication to the authorities
Regional administrations recommend communicating the location and purpose of the crop to the nearest Civil Guard or National Police post before starting any practices. It is not an authorization, but a transparency measure that avoids misunderstandings.
Signage and identification of the crop
A widespread and advisable practice: identifying the plot as a declared industrial hemp crop, which reduces complaints from third parties and interventions motivated by confusion with other crops.
Maintenance of the complete file
Invoices, labels, analytics, contracts with buyers, and justification of the destination of each batch. This is the material that supports the farmer’s position if the purpose of the crop is ever questioned.
None of this is particularly complex, but it is cumulative: the strength of the file depends on no piece being missing. This is exactly the work we handle in our compliance service for hemp farmers, where we review the complete documentation before the campaign and not after.
The flower: where everything breaks
The official criteria, in writing
The Ministry of Agriculture issued an informative note, prepared in collaboration with the autonomous communities, the AEMPS, and the Technical Unit of the Judicial Police of the Civil Guard, to warn farmers of the offenses they may commit.
It specifies that the crop can only be used to obtain grain, fiber, or seeds, and that flowering tops are considered narcotics, so they cannot be used for any purpose—including CBD extraction—unless authorized by the Medicines Agency.
That is the exact point where dozens of apparently impeccable projects have broken down. A farmer with a certified variety, a submitted declaration, and a sent communication can still find themselves in criminal proceedings if it is proven that they used the flower. And the administrative criteria goes even further than many assume: AEMPS authorization is mandatory whenever the purpose of the crop is not industrial, even when certified seeds of varieties from the European Union Common Catalogue are used, precisely because that catalogue only includes varieties with low THC content.
“If my variety is certified and the analysis shows less than 0.3% THC, I can use the whole plant, including the flower, and sell the biomass for CBD extraction.”
Certification and analysis prove the variety, they do not authorize the destination. The use of flowering tops falls outside of permitted industrial cultivation and requires prior authorization from the AEMPS, regardless of the THC content.
It is worth adding a nuance that often generates debate in the sector. There are conflicting judicial rulings and authoritative voices arguing that using the flower without authorization should be resolved in the administrative sanctioning sphere rather than the criminal one, based on European doctrine regarding the free movement of CBD. It is a legally solid and still open discussion. But doctrinal debate is one thing, and the risk management of a real farm is another: today, the criteria of the AEMPS, the Ministry of Agriculture, and the Prosecutor’s Office is the one we have described, and that criteria is what a farmer faces when an intervention occurs. The recent tightening in the flower segment, which we analyze in our commentary on the Supreme Court ruling on CBD flowers, points in the same direction.
“There is a pattern that repeats and that seems especially unfair to me: the farmer who does everything right ends up being the easiest to locate. They declare the crop, communicate the location, identify themselves to the Administration… and all that transparency, which is exactly what is asked of them, is what later allows them to be sought out. I am not saying the solution is opacity, which would be terrible and also illegal advice. I am saying that if you are going to be transparent, and you must be, you had better make sure that what they find fits exactly with what you declared.”
What you can do with the harvest and what you cannot
Organized like a traffic light, the map of uses is quite clear. And it is narrower than the commercial enthusiasm surrounding the crop suggests:
- Fiber: textiles, cordage, paper, insulation, and construction materials
- Grain and seed: food derived from seeds without added cannabinoids, seed oil, and oleaginous uses
- Stalk and woody biomass for industrial uses not linked to cannabinoid extraction
- Production of certified seed in accordance with seed regulations
- Sale of dried flower as a final product, regardless of its commercial presentation
- Production intended for human consumption of cannabinoids without the corresponding regulatory pathway
- Cultivation with varieties not registered in the EU Common Catalogue
- Exceeding the THC threshold established for eligible cultivation
The practical consequence for a business plan is direct: projected profitability must be built on the green column, not the amber one. When a project only adds up numerically if the flower is used, what you have is not an agricultural business plan: it is a regulatory project that requires a different structure, different timelines, and a different investment. This is a distinction we work on when preparing an industrial hemp business plan, because it conditions everything else.
The authorized route: AEMPS and medical cannabis
The door exists, but it is narrow
The Spanish Agency for Medicines and Health Products grants cultivation authorizations for research purposes, for medical and scientific purposes, and for obtaining batches intended to validate manufacturing processes for active ingredients.
Whoever holds that authorization must also request specific authorization for the plots where they will cultivate. The number of authorized entities in Spain is very small and the barrier to entry is high: pharmaceutical or scientific backing and a demanding compliance structure are required.
For years, that route had a fundamental problem: one could cultivate with authorization, but practically all the product was destined for export because there was no national market to serve. That changed at the end of 2025.
The Council of Ministers approved, at the proposal of the Ministry of Health, the Royal Decree regulating the use of standardized compounded formulations made from standardized cannabis preparations for medicinal purposes. The preparations must be registered with the AEMPS, guaranteeing their quality, safety, and dosage. Their preparation is limited to authorized hospital pharmacy services and prescription is reserved for specialist doctors. For licensed producers, the consequence is significant: for the first time, there is an outlet in the Spanish domestic market, and not just export.
“When someone suggests jumping from industrial hemp to the authorized route, the first thing we do is a reality check. Not because it isn’t possible—it is—but because they are two different businesses with two different structures. What I see most are people who want to stay within the agricultural framework and use the flower ‘in the meantime,’ and that ‘in the meantime’ is exactly the ground where problems arise. Either you are in industrial cultivation and you renounce the flower, or you build the regulatory project with all its consequences. The middle ground does not exist, even if commercially it is the most tempting.”
From administrative file to criminal proceedings
It is important to understand well how risk scales, because the distance between an administrative irregularity and a criminal case is shorter than it seems in this specific crop.
| Situation | Scope | Typical consequence |
|---|---|---|
| Documentary defect in the agricultural declaration | Agricultural administrative | Request for correction and, if applicable, loss of the right to aid for the campaign |
| Unregistered variety or exceeding the THC threshold in the field | Agricultural administrative | Ineligible crop, with possible destruction of the plantation and sanctioning file |
| Use of the flower without authorization | Criminal, according to Prosecutor’s criteria | Investigation for crime against public health, with seizure of the product |
| High volume of seized floral biomass | Criminal, with possible aggravation | Possible assessment of specific aggravating factors due to quantity |
The last two rows connect directly with the provision that regulates these behaviors. How the penalty is determined, what distinguishes industrial destination from trafficking destination, and what margin of defense exists is explained in detail in our guide on Article 368 of the Penal Code. And if the situation has already led to an intervention, the work moves to the field of specialized criminal defense in cannabis.
There is a practical detail that deserves special attention: the intervention of a declared crop usually occurs in the middle of the campaign, with the investment made and without the possibility of recovering the harvest even if the procedure is later archived. The economic damage arrives before any judicial resolution, and that is why in this sector prevention has such a clear return.
The hemp grower’s file
- Official labels from seed packaging and purchase invoices for the certified variety.
- Documentary justification of the registration of the variety in the EU Common Catalogue.
- Registration of agricultural activity and declaration of plots with surface area and sowing rate.
- Record of the communication sent to the Civil Guard or National Police, with an entry stamp.
- THC content analyses performed in a laboratory, per plot and campaign.
- Contracts with buyers where the industrial destination of each batch is expressly stated.
- Traceability of the harvest destination: what was delivered, to whom, on what date, and for what use.
- Documentary justification of the treatment given to non-usable plant remains.
That last point is often overlooked and is one of the most significant. Being able to prove what was done with the non-usable fraction of the crop preemptively answers the question that will most certainly be asked if there is ever a check.
Frequently asked questions about industrial hemp cultivation
Is it legal to cultivate industrial hemp in Spain?
Yes, as long as certified varieties registered in the European Union Common Catalogue of Varieties are used, the agricultural activity is declared according to the requirements of the autonomous community, and the use is limited to obtaining fiber, grain, or seeds. Outside of those purposes, the Administration’s criteria is that prior authorization from the AEMPS is required.
Do I need a special license to cultivate hemp?
For industrial cultivation intended for fiber, grain, and seed, there is no specific hemp license: ordinary agricultural regulations are followed and the activity is documented. What does require express authorization from the AEMPS is any cultivation with a purpose other than industrial, including medical, scientific, or research purposes.
What THC limit must industrial hemp meet?
Within the European Union’s agricultural framework, Regulation (EU) 2021/2115 sets the maximum THC content of the plant in the field at 0.3% for the crop to be eligible. This is a different threshold from the one required later for the final marketed product, which in Spanish practice is stricter. It is advisable to document compliance with laboratory analyses per plot and campaign.
Can I use the flowers from my hemp crop to extract CBD?
According to the criteria of the Ministry of Agriculture, the AEMPS, and the Prosecutor’s Office, not without prior authorization from the AEMPS. Flowering tops are considered narcotics and industrial cultivation only covers the production of grain, fiber, or seeds. This criteria applies regardless of whether the variety is certified and the THC analysis is low, and non-compliance can lead to criminal proceedings.
Do I have to notify the Civil Guard of my hemp plantation?
It is not an authorization, but regional administrations expressly recommend it: communicate the location and purpose of the crop to the nearest Civil Guard or National Police post before starting any practices. It is advisable to keep the entry record of that communication as part of the file.
What varieties of hemp can I sow?
Only those registered in the European Union Common Catalogue of Varieties of Agricultural Plant Species, which includes Cannabis sativa L. varieties selected for their low THC content. Official labels from the packaging and purchase invoices must be kept: they are proof of the variety actually used.
Can industrial hemp qualify for CAP aid?
Yes, hemp is an eligible crop within the framework of the Common Agricultural Policy when it meets the certified variety and THC threshold requirements, and is declared according to the corresponding procedure. Specific requirements and amounts depend on the campaign and the autonomous community, so it is advisable to verify them before planning the sowing.
What is AEMPS authorization and who can obtain it?
It is the authorization that enables the cultivation of plants that can produce narcotics for research purposes, for medical and scientific purposes, or for obtaining batches intended to validate manufacturing processes. Whoever obtains it must also request specific authorization for the plots. The barrier to entry is high and the number of authorized entities in Spain is very small.
What changed with the regulation of medical cannabis?
The Royal Decree approved at the end of 2025 regulates standardized compounded formulations made from standardized cannabis preparations, which must be registered with the AEMPS. Their preparation is limited to authorized hospital pharmacies and prescription to specialist doctors. For licensed producers, it means the opening of an outlet to the Spanish domestic market, in addition to export.
What happens if my declared hemp crop is seized?
The determining factor will be the consistency between what was declared and what was found, and the strength of the documentary file: variety, analytics, contracted destination of each batch, and treatment of remains. It is advisable to have specialized assistance from the very beginning, because in this crop, intervention usually occurs in the middle of the campaign and the economic damage materializes before any resolution.
Industrial hemp is a real agricultural opportunity, with growing demand and a perfectly defined legal fit as long as its purpose is respected. The difficulty is not in cultivating it, but in resisting the temptation to use the part of the plant that the framework does not cover. The projects that last in this sector are, almost without exception, those that decided from the beginning what they were going to do with each fraction of the harvest and documented it. Those who left it for later usually discover the problem with the investment already committed.
Sources and rules consulted
- AEMPS criteria on cultivation authorizations, National Plan on Drugs, Ministry of Health.
- 1961 Single Convention on Narcotic Drugs and Law 17/1967, on regulatory norms for narcotics.
- Regulation (EU) 2021/2115, on the strategic plans of the Common Agricultural Policy, regarding the THC threshold for eligible hemp.
- Informative note from the Ministry of Agriculture, Fisheries and Food on hemp production conditions, prepared with the autonomous communities, the AEMPS, and the Technical Unit of the Judicial Police of the Civil Guard.
- Royal Decree establishing the conditions for the preparation and dispensing of standardized compounded formulations of standardized cannabis preparations.
- Organic Law 10/1995, of the Penal Code, articles 368 and following.
Are you going to start an industrial hemp project?
Gabriela Sierra, a lawyer specializing in industrial hemp and cannabis, reviews the utilization model, campaign documentation, and contracts with buyers before sowing, and accompanies projects that require a regulatory pathway. Tell us about your project and start with a solid foundation.
Industrial hemp consultancyNotice: this article is exclusively for informative and educational purposes, reflects the regulatory framework in force at the date of its publication (August 2026), and does not constitute legal advice. Agricultural and cannabis sector regulations are subject to frequent changes, and autonomous communities may establish additional requirements. For an analysis of your specific project, contact Lawyer Sierra.