The Constitutional Court has passed down a judgment that makes it legal for adults to cultivate and smoke dagga in their homes. The court ruled that the right to privacy was violated by prohibiting the possession, purchase or cultivation of dagga for personal consumption by an adult in a private dwelling.
The case was pursued by various parties, including a Cape Town lawyer, Gareth Prince, who is a practising Rastafarian. It was opposed by, among others, the ministers of justice & constitutional development, police and health; the national director of public prosecutions and the NGO Doctors for Life International.
The Constitutional Court's judgment is to be applauded for doing away with the moralistic and paternalistic assumption that dagga use by adults in private is always wrong and unhealthy. SA joins a number of countries that have taken a similar step, among them Canada and Portugal.
But there are still lots of uncertainties that need to be cleared up before South Africans can use dagga without fear of prosecution. One of these is that legislation will have to be brought into line with the judgment.
In making its ruling, the Constitutional Court considered several issues. These included privacy, health concerns and the status quo in other parts of the world.
Delivering the unanimous judgment, deputy chief justice Raymond Zondo stated that "the right to privacy entitles an adult person to use or cultivate or possess cannabis in private for his or her personal consumption". To the extent that the impugned provisions criminalise such cultivation, possession or use of dagga, they limit the right to privacy.
The court also examined the medical evidence that was used when the case was first brought to the Cape Town high court - as well as evidence from a 2002 case about the religious use of dagga. It found no persuasive medical evidence that dagga in small amounts was harmful to users, particularly compared to the harm resulting from the use of alcohol. Nor was there proof that dagga use caused violent or aggressive behaviour or that its use led to the use of more potent or dangerous drugs.
The Constitutional Court noted that the personal consumption of small quantities of dagga had been decriminalised or legalised in many other democratic countries.
The state failed to prove that the existing limitation of privacy was reasonable and justifiable. The relevant legal provisions that criminalise personal, private use of dagga by adults were declared unconstitutional and invalid. That order was suspended for 24 months. This will give parliament time to rectify the constitutional defects.
In the interim, the court ordered, adults who use, possess or cultivate dagga in private for their own personal consumption are not guilty of contravening these provisions.
The personal consumption exception has been widely celebrated. But it raises various practical difficulties.
First, it's less than clear under what circumstances the personal consumption exception will apply. According to the court, police officers will have to determine this case by case. To do so, they'll need to consider factors such as the quantity of dagga in the person's possession and whether they can give a satisfactory account of their possession.
Uncertainty relating to how the exception is to be enforced in practice is problematic. It may even mean that the exception violates the so-called principle of fair warning. This rule requires criminal law provisions to be clearly formulated so that those subject to them know ahead of time what they may and may not do.
Second, while the Constitutional Court judgment confirms the high court's findings in many respects, it also differs in important ways. Significantly, the Constitutional Court held that there was no persuasive reason for the high court to confine its declaration of invalidity to dagga use in a home or private dwelling.
The Constitutional Court envisages instead that, provided dagga is used "in private and not in public", it is protected by the right to privacy even if the adult in question is not at home or in a private dwelling.
It uses the example of someone who has dagga in their pocket for private consumption, and then steps outside their home or dwelling. Provided the dagga remains in their pocket and is for personal use, it still falls within the constitutional protection.
This seemingly broadens the exception proposed by the high court. But once again, it remains to be seen how the courts will interpret the distinction between public and private use in practice.
Another aspect of the high court judgment the Constitutional Court refused to confirm relates to the order declaring that provisions prohibiting the purchase of dagga were invalid.
The Constitutional Court argued that allowing people to purchase dagga would amount to sanctioning dealing in it.
This aspect of the judgment raises a legitimate practical concern: how is an adult user of dagga supposed to acquire the dagga they're allowed to use in private if they don't buy it from a dealer of some sort (which the Constitutional Court explicitly says is illegal)?
The user could grow their own. But they would need to obtain the seeds or buy them from someone else - who is, by definition, a dealer. The judgment's implication seems to be that to exercise one's (constitutionally protected) right to use dagga in private, one must inevitably act illegally since any purchase of dagga and related products makes one an accomplice to dealing in cannabis.
• Nel is a senior lecturer in public law at Stellenbosch University. This article first appeared in The Conversation Africa website..