Syngenta has confirmed it will cease global production of paraquat by June 2026, shutting down manufacturing at its Huddersfield, UK site, its only facility producing the active ingredient. The announcement cited intensifying competition from generics as the key driver of the withdrawal, which has eroded its share of a product category that today represents less than 1% of Syngenta’s global sales.
Paraquat, introduced over 60 years ago, remains a powerful weed‑killer that enables no‑till farming and stays a vital tool for many growers. Yet with more than 750 companies now registering generic versions worldwide, Syngenta’s share of the market has steadily diminished.
Legal exposure and global regulatory pressure add to the squeeze
The commercial pressures coincide with escalating legal and regulatory scrutiny. Syngenta faces thousands of US lawsuits alleging that chronic exposure to paraquat products such as Gramoxone contributed to Parkinson’s disease.
The company strongly disputes the claims, maintaining the herbicide is safe when used according to registered label directions.
Although paraquat remains legal in the United States as a restricted‑use pesticide, more than 70 countries have banned it, including – ironically – the UK, where Syngenta has been producing it for export. Health and environmental groups welcomed the announcement but stressed it does not go far enough. Scott Faber of the Environmental Working Group in the US warned that “no one should fall for this classic industry bait and switch,” arguing that paraquat production will continue elsewhere until worldwide bans are enacted.
Syngenta framed its exit as part of a broader push toward innovation, sustainability and advanced crop protection technologies, emphasising investments in seeds, biologicals and digital tools.
“This decision is about focusing our resources where they deliver the greatest value for our business and our customers,” said Mike Hollands, President Syngenta UK.
A stark reminder of innovation gaps
Few observers were surprised by the decision. Paraquat has become a shrinking, high‑risk asset for Syngenta commercially, legally and politically, while remaining under intense scientific scrutiny.
But the announcement has also reopened a bigger conversation: why is agriculture still relying on chemistries invented in the 19th century to manage 21st‑century weed resistance?
This question is especially pointed for Australian growers, one of the last major farming constituencies still reliant on paraquat to control glyphosate‑resistant weeds.
According to Alexandra Ranson, head of corporate affairs at UK company Moa Technology, which develops novel herbicides with new modes of action to combat weed resistance, Aussie farmers are more worried about regulatory bans than supply shortages, as alternative paraquat suppliers will remain in the market even after Syngenta exits.
Ranson argues the news illustrates “how little genuine innovation in herbicide discovery has been achieved in recent decades.” Paraquat, she notes, was first synthesised in 1882, yet remains a linchpin chemistry for managing resistance because no scalable, safe, effective bioherbicides have emerged to replace it.
The industry has spent tens of billions trying to find a bio‑herbicide that works at scale. Any natural compound strong enough to kill weeds has so far failed modern safety criteria. That’s why new modes of action have been so elusive for the past 30 years.
“What we are trying to do at Moa is discover a completely new generation of novel mode of action herbicides that are will allow farmers to transition safely, sustainably and affordably away from old chemicals like paraquat,” Ranson says.
A catalyst for a new chemistry era?
George Crane, CEO of Bindbridge, a UK ag‑biotech developing a new class of crop protection molecules, shares this view. He says Syngenta’s withdrawal underscores the industry’s responsibility to deliver fresh chemical innovation that aligns with current regulatory expectations.
“Paraquat increasingly represents legacy chemistry as the industry moves toward safer and more targeted crop‑protection solutions,” Crane says. “The challenge now is ensuring farmers aren’t left with fewer effective tools.”
He argues the post‑paraquat era must be defined not by one-for-one replacements, but by radically new modes of action that outpace weed resistance, while meeting modern safety and regulatory expectations
“This transition should accelerate innovation,” he says. “Novel approaches such as targeted protein degradation and AI-enabled molecular discovery are opening previously inaccessible chemical space.”
A turning point for crop protection – and a warning
Syngenta’s decision may have been inevitable, but it has landed at a moment when weed resistance is expanding faster than the industry’s ability to counter it. With paraquat’s future now hinging more on regulators than on manufacturers, the pressure is shifting firmly onto innovators.
For an industry that has launched almost no new herbicide modes of action in more than three decades, this moment is both a reckoning and an opportunity: a chance to break the innovation drought – or risk deepening the global weed‑resistance crisis at a time when growers have never been more reliant on effective tools.
