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Syngenta submits HiFlex label expansion aimed at giving corn growers greater herbicide program flexibility

EPA review underway for proposed expansion to bicyclopyrone-containing corn herbicide labels; registration anticipated ahead of the 2027 growing season.

GREENSBORO, N.C., U.S.A., Oct. 12, 2026 – Syngenta announced it has submitted a proposed HiFlex™ label expansion to the U.S. Environmental Protection Agency that, pending approval, would expand weed management flexibility for corn growers using bicyclopyrone-containing corn herbicides, including Storen®, Acuron®, Acuron Flexi and Acuron GT herbicides.

With approval anticipated for the 2027 growing season, the proposed HiFlex label expansion is projected to double the maximum rate of bicyclopyrone growers are allowed to use each year. This is expected to give growers expanded options for customized, overlapping residual herbicide programs.

“Growers have told us they want flexible programs that allow them to better position active ingredients throughout the season based on their weed pressures and management practices,” said Syngenta Technical Product Lead Mark Kitt. “Once approved, the HiFlex label expansion would give growers the option to use Storen, Acuron or Acuron Flexi preemergence followed by a postemergence application of Acuron GT, which is not permitted on current labels.”

The proposed HiFlex label expansion would also increase the maximum single application rates of Storen, Acuron Flexi and Acuron GT. Upon registration:

  • Storen users will have the flexibility to use up to 3.1 qts./A — 29% more than the current max rate of 2.4 qts./A.
  • Acuron Flexi users will have the flexibility to use up to 3 qts./A — 33% more than the current max rate of 2.25 qts./A.
  • Acuron GT users will have the flexibility to use up to 4.5 pts./A — 20% more than the current max rate of 3.75 pts./A.

For more information about the upcoming HiFlex label expansion, visit www.HiFlexLabel.com or reach out to your local Syngenta representative

Media Contacts
Julie Richards
919-805-2358
julie.richards@syngenta.com

Cameron Alexander
704-941-1565
calexander@gscommunications.com

Web Resources:
www.HiFlexLabel.com
Syngenta Newsroom
Syngenta U.S.
Thrive

About Syngenta Crop Protection
Syngenta is a leading science-based agricultural technology (AgTech) company, creating Breakthroughs for farmers, in every field™ to help meet the demands of modern agriculture. Using cutting-edge innovation and guided by its Sustainability Goal of higher yields with lower impact, Syngenta helps farmers to grow resilient, healthy crops that can feed a growing global population, while protecting and enhancing the planet. Syngenta is part of Syngenta Group, headquartered in Switzerland. To find out more about how Syngenta creates breakthroughs for farmers around the world, read our stories and follow us on social media.

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This document may contain forward-looking statements, which can be identified by terminology such as ‘expect’, ‘would’, ‘will’, ‘potential’, ‘plans’, ‘prospects’, ‘estimated’, ‘aiming’, ‘on track’ and similar expressions. Such statements may be subject to risks and uncertainties that could cause the actual results to differ materially from these statements. For Syngenta, such risks and uncertainties include risks relating to legal proceedings, regulatory approvals, new product development, increasing competition, customer credit risk, general economic and market conditions, compliance and remediation, intellectual property rights, implementation of organizational changes, impairment of intangible assets, consumer perceptions of genetically modified crops and organisms or crop protection chemicals, climatic variations, fluctuations in exchange rates and/or commodity prices, single source supply arrangements, political uncertainty, natural disasters, and breaches of data security or other disruptions of information technology. Syngenta assumes no obligation to update forward-looking statements to reflect actual results, changed assumptions or other factors.

© 2026 Syngenta. 410 Swing Road, Greensboro, NC, 27409. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. Please check with your local extension service to ensure registration and proper use. Acuron is a Restricted Use Pesticide. Acuron®, HiFlex™, Storen® and the Syngenta logo are trademarks of a Syngenta Group Company. All other trademarks are the property of their third-party owners.