Growing for personal use: where the courts draw the line
Why Spanish law fixes no number of plants, which criteria actually weigh in proceedings, and how domestic cultivation differs from an association's collective cultivation. It contains no growing indications.
August 13, 2026
Spanish legislation sets no number of plants above which home growing becomes illegal. What is assessed in proceedings is not the figure but the destination of what is grown, its visibility from a public space and the relationship between the quantity and the grower's own consumption. That is why two cases with the same number of plants can end in completely different ways.
This article describes the legal framework and the criteria the courts apply. It is not legal advice or a growing guide: it contains no technical indications of any kind. Any specific situation requires assessment by a lawyer with access to the file.
Why there is no figure in the law
Article 368 of the Spanish Criminal Code punishes the cultivation, production and trafficking of toxic drugs, narcotics and psychotropic substances, as well as acts that "otherwise promote, favour or facilitate" their unlawful consumption. The legal interest it protects is public health understood as a collective interest, not the health of the person consuming.
From that construction comes the conclusion that underpins the whole subject: personal consumption is not a criminal offence in Spain, and neither, in themselves, are preparatory acts directed exclusively at that personal consumption. Case law has been repeating for decades that self-consumption falls outside the offence because there is no distribution to third parties. The practical consequence is that the legislator never had a reason to write down a number: the criterion is not quantitative, it is purposive.
This explains an asymmetry that surprises many people. One person may be acquitted with a crop of a certain size if they show they were a habitual consumer and that everything was destined for their own consumption, while another may be convicted with less material if the file contains indications of distribution. The same logic runs through the rest of the Spanish legal framework on cannabis, summarised in the general guide to cannabis and the law in Spain.
The criteria the courts weigh: destination, visibility, quantity
When a court has to decide whether a crop was for personal consumption or was directed towards trafficking, it works with indications. None of them decides on its own; they are weighed together and set against the account given by the person under investigation.
Counting plants serves to estimate potential output, and that estimate is compared with the personal consumption claimed. But the count enters the reasoning as one more piece of data, alongside the rest of the indications. Asking "how many plants are allowed" starts from a premise that Spanish law does not share.
Visible cultivation as an administrative infringement
There is a second route, distinct from the criminal one and much more common in practice. Ley Orgánica 4/2015, the Spanish organic law on the protection of public safety, includes among its serious infringements the carrying out of unlawful planting and cultivation in places visible to the public, where those facts do not constitute a criminal offence.
Two features of this rule explain its reach. The first is that it acts as a closing clause: it applies precisely in the cases the Criminal Code leaves out, that is, home growing destined for personal consumption. The second is that the decisive element is public exposure, not the technique or the purpose. The argument in these files always turns on whether the cultivation was or was not perceptible from the public street or from communal spaces, and the administrative courts have resolved this case by case, according to the specific situation of the property.
Serious infringements under that law fall within a penalty band that starts at 601 euros and can reach 30,000, and the financial penalty is usually accompanied by seizure of the material. The procedure and the avenues for representations are the same as for penalties for consumption or possession in the street, explained in the article on fines for consumption in public places.
When the criminal threshold is crossed
The move from an administrative file to criminal proceedings occurs when the indications suggest that what was grown was not destined exclusively for personal consumption. There is no numerical border announcing that moment: it is an assessment of the evidence.
If a destination to third parties is found, Article 368 comes into play. For substances the law does not regard as causing serious harm to health — the category in which case law consistently places cannabis derivatives — the penalty provided is one to three years' imprisonment, plus a fine. The article itself provides for the possibility of reducing the penalty in view of the minor nature of the act and the personal circumstances of the offender, and the following article sets out aggravating factors, among them that of notorious importance, whose quantitative thresholds were fixed by the Tribunal Supremo (Spain's Supreme Court) in plenary agreements.
One nuance is worth holding on to, as it is often lost: an acquittal on grounds of personal consumption does not turn cultivation into an activity that the law protects. It means only that this particular conduct did not fit the criminal offence. The administrative route remains open, as do the contractual or neighbourly consequences that may follow within a residents' association or under a tenancy.
Why the collective cultivation of an association is a different legal figure
The cultivation organised by a cannabis association is not an enlarged version of domestic home growing. It rests on a different case-law construction, that of shared consumption, which requires a closed and previously determined group of habitual consumers, quantities adjusted to that group, consumption in an enclosed place and no distribution to the outside. The development of that doctrine and its limits are set out in the article on the shared consumption doctrine.
The Tribunal Supremo has applied those requirements restrictively to associations: a good part of the convictions are explained by the scale of the activity, the number of people involved or the ease of joining breaking the premise of a closed circuit. Hence the associative model rests on a fragile balance, described in more detail in the explanation of what a cannabis social club is and in the page on what a cannabis club is.
| Aspect | Individual domestic cultivation | Collective cultivation by an association |
|---|---|---|
| Legal basis invoked | Self-consumption falling outside the offence: no distribution to third parties | The shared consumption doctrine within a closed and determined group |
| Who is answerable | The person growing, individually | The bodies of the association, as well as the entity itself |
| Destination accepted | Exclusively the consumption of the person growing | Exclusively the consumption of people who are already identified members |
| Usual critical point | The visibility of the cultivation and the quantity against personal consumption | The openness of the group and the scale of the activity |
| Most frequent penalty route | Administrative proceedings for visible cultivation | Criminal proceedings where the closed circuit is considered broken |
The two figures do not communicate with each other. Being a member does not enable any private cultivation, and domestic cultivation is not covered by the statutes of any entity. To this is added the fact that administrative latitude varies by territory, as set out in the comparison by autonomous region.
Frequently asked questions
How many plants are legal in Spain?
No Spanish rule sets a number. The question has no numerical answer because the legal criterion is the destination of what is grown, not the quantity. Any figure circulating as a "permitted limit" comes from the interpretation of specific cases, not from the text of the law.
Does growing on a balcony or a terrace have different consequences?
It may, because Ley Orgánica 4/2015 ties the serious infringement to the cultivation taking place in a location visible to the public. If the administration considers that requirement met, penalty proceedings are possible even where the destination was personal consumption and there is no criminal offence.
Does being a member of an association allow growing at home?
No. The collective cultivation of an association and domestic cultivation are independent legal figures, and belonging to an entity does not cover activities carried out outside it. No association can grant an authorisation that the law does not provide for.
What happens if the quantity exceeds personal consumption?
The excess works as an indication of destination to third parties and may move the matter into the criminal sphere, where it is weighed together with the rest of the elements in the file. The final classification depends on the evidence presented, and its analysis is a matter for a legal professional.
