Opium poppies in Madrid: opium growing next to schools and parks

Opium in Madrid's parks: the wild explosion of the opium poppy nobody controls

Dozens of opium poppy plants are growing in plain sight on wasteland, roadside ditches and even next to playgrounds in southern Madrid. The species, identified as Papaver somniferum, has colonised areas of Villaverde, Getafe, Vallecas and the Cañada Real, according to photographs and testimonies gathered this very week. What seemed like a botanical anecdote is in fact the tip of the iceberg of a phenomenon that has been years in the making.

From the pharmaceutical industry to the asphalt: how the poppy escaped

Spain is one of Europe's largest producers of legal opium. The only company authorised to grow it is Alcaliber, with plantations in Toledo that are fenced off and guarded. But the seeds, light as dust, travel with the wind, on construction trucks or stuck to farm machinery. "There was construction work in growing areas and the sand trucks spread it around," explains a local resident. The result: an unstoppable wild spread over the last ten years, which turned into an explosion in 2025 thanks to favourable weather conditions.

The Iberian variety of the opium poppy is not the same as the Afghan one, but its morphine content is "extremely high", according to some analyses, even surpassing the Asian varieties. A fact that dismantles the official story that Spanish poppies have a low alkaloid concentration, a myth that some interpret as an attempt to deter harvesters.

Hemlock, jimson weed and castor bean: the plant cocktail of southern Madrid

But the opium poppy is not alone. The same areas are infested with hemlock, jimson weed and castor bean, all highly toxic plants. In Getafe, the Seprona (the Guardia Civil's environmental protection service) already intervened in June 2022 in a field of opium poppies in the El Culebro industrial estate, arresting four Italian nationals who were cutting them. Despite the police intervention, the spread has not stopped.

Toxicity is not the only risk. Some specimens appear with cuts in their capsules, a sign that someone has extracted the latex. "It's very easy: one day you make the cuts, another day you collect the resin," explains one comment. Others dismiss it as anecdotal: "A professional junkie doesn't waste time on this when they have lab-made drugs." But the evidence on the ground shows that homemade opium still has a market.

A real problem or unnecessary alarm?

Opinions are divided. On one side are those who believe the presence of these plants in public spaces is a control failure and a risk to children and teenagers. "I've never seen anything like it, right next to the park where children play," warns a witness. On the other, those who point out that the opium poppy is native to the Mediterranean basin and has always been there, but now attracts more attention because drought conditions and abandoned farmland have boosted its visibility. "In the countryside livestock leaves none of that standing," they note.

The company Alcaliber keeps its legal plantations secret, but the reality is that the border between the legal and the wild has blurred. The Guardia Civil has acted in isolated cases, but there is no systematic eradication plan. Meanwhile, any resident walking along the M50 or the banks of the Manzanares can stumble upon a field of opium in full bloom. The question is whether the authorities will take action or let nature — and the opportunists — take its course.

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