Minnesota has about 64,000 farms working roughly 25.3 million acres. In 2025, growers here planted 8.9 million acres of corn and 7.15 million acres of soybeans. Almost none of that ground gets farmed without herbicide.
So when the Supreme Court decides what a pesticide label can be forced to say, it’s deciding something that touches most of the farmland in this state. And since glyphosate is on the shelf at every hardware store in Minnesota, a fair number of garages too.
On June 25, 2026, the Court decided it.
The case
John Durnell sued Monsanto in Missouri state court in 2019. He said he’d used Roundup for about twenty years and that it gave him non-Hodgkin’s lymphoma. His theory was failure to warn: Roundup’s label had no cancer warning, and it should have.
After a nine-day trial, a jury agreed and awarded him $1.25 million in compensatory damages. The Missouri Court of Appeals affirmed.
The Supreme Court reversed, 7–2. Justice Kavanaugh wrote for the Court. Justice Jackson dissented, joined by Justice Gorsuch.
The holding:
FIFRA expressly preempts Durnell’s state-law failure-to-warn claim because the claim would require Monsanto to add a cancer warning to Roundup’s label.
Follow the steps, because they show this was never really a fight about whether glyphosate causes cancer.
The Federal Insecticide, Fungicide, and Rodenticide Act has a preemption clause titled, plainly enough, “Uniformity.” It says a state “shall not impose or continue in effect any requirements for labeling or packaging in addition to or different from those required under this subchapter.” 7 U.S.C. § 136v(b).
To sell a pesticide, a manufacturer has to register it with EPA, and EPA has to approve the label — finding that it carries all warnings “necessary and adequate to protect health and the environment” and contains nothing “false or misleading.” EPA has looked at glyphosate again and again and concluded it isn’t likely to cause cancer, a view regulators in many other countries share. So EPA approved a label with no cancer warning.
Then the last piece: once EPA approves a label, federal law requires the manufacturer to use that label until EPA approves or requires a change. Sell it with a different label and the manufacturer faces civil and criminal penalties.
So a jury verdict that says “you should have added a cancer warning” puts a state labeling requirement on the product that’s different from the federal one. Under § 136v(b), it’s preempted.
Minnesota’s fingerprints are on the rule
Here’s the part I’d bet almost nobody notices.
The precedent the Court leaned on to back up its reading was Riegel v. Medtronic, 552 U.S. 312 (2008). Riegel read a preemption clause in the Medical Device Amendments that is, in the Court’s word, “nearly identical” to FIFRA’s. It held that FDA’s premarket approval of a device imposes federal “requirements” that push aside conflicting state tort duties.
Medtronic was founded in 1949 in a converted garage in Minneapolis by Earl Bakken and Palmer Hermundslie. Its operational headquarters has been in Fridley since the 1970s.
So the template that just decided the Roundup question — the agency approves a product’s terms, that approval is a federal requirement, and a jury verdict demanding different terms is a competing state requirement — got worked out in litigation over a Minnesota company’s product. Minnesota didn’t just inherit this doctrine. In a real sense, Minnesota supplied it.
And Minnesota law already defers to that label
There’s a second Minnesota connection, and it’s more concrete. It’s in our own statutes.
Minnesota doesn’t write its own pesticide labels. Minn. Stat. § 18B.07 requires that pesticides “be applied in accordance with the product label or labeling and in a manner that will not cause unreasonable adverse effects on the environment,” and makes it unlawful to use, store, handle, distribute or dispose of a pesticide “in a manner that is inconsistent with a label or labeling as defined by FIFRA.”
So the EPA-approved label isn’t just a federal document that happens to ride in on a jug sold in Minnesota. It’s the standard of conduct Minnesota law puts on every applicator in the state. A Minnesota farmer who ignores it is breaking Minnesota law.
That makes the uniformity holding hang together in a way that’s easy to miss when the case gets described only as a win for a chemical company. Minnesota orders applicators to follow the federal label. It’d be strange for Minnesota juries, at the same time, to punish the manufacturer for printing that label instead of a different one. Two masters, one jug.
Whether the label is right is a separate question, and a serious one. But it’s a question for EPA and Congress, and after Durnell it’s flatly not a question for a state jury.
What the decision doesn’t decide
This is where the coverage tends to overshoot.
Durnell holds that a failure-to-warn claim requiring a label change is preempted. It doesn’t hold that FIFRA preempts everything.
The Court’s own precedent on that point, Bates v. Dow Agrosciences, 544 U.S. 431 (2005), is still on the books, and Bates said this flat out:
Rules that require manufacturers to design reasonably safe products, to use due care in conducting appropriate testing of their products, to market products free of manufacturing defects, and to honor their express warranties or other contractual commitments plainly do not qualify as requirements for “labeling or packaging.” … Thus, petitioners’ claims for defective design, defective manufacture, negligent testing, and breach of express warranty are not pre-empted.
Durnell distinguished Bates on the failure-to-warn point. It drew a line between label claims about efficacy, which EPA doesn’t review at registration, and claims about safety, which it does. The dissent thought that line was made up and that Bates had already rejected the majority’s theory. That disagreement is the fault line now, and it’ll be litigated hard.
But nothing in Durnell disturbs the categories Bates protected. A claim that doesn’t require the manufacturer to say something different on the label is a different claim, and it survives this decision.
Nor does Durnell touch misapplication. If a pesticide drifts onto a neighbor’s crop, or gets applied to a property nobody asked to have treated — which § 18B.07 addresses specifically — the fight is between the parties over what somebody did, not over what EPA printed. Preemption of labeling requirements has nothing to say about it. Drift and misapplication claims between Minnesota neighbors are untouched.
Where this leaves people here
For growers and applicators: the label you already have to follow by law is now more firmly the one national standard. In practice that’s stability — the same product, the same instructions, the same recordkeeping duties across state lines, without fifty juries pulling different directions. Follow it, document that you followed it, and keep the paperwork.
For someone who believes a pesticide made them sick: one road is now closed in Minnesota courts, same as everywhere else. That’s a real loss. What’s left are the theories Bates protected and any claim that doesn’t depend on rewriting the label. Those are harder cases. They turn on the facts, and they should be looked at by someone who traces the whole chain — what was applied, by whom, under what instructions, with what exposure, over what period.
For everyone: the decision moves the argument. It doesn’t end it. If the federal label is now the ceiling on what a state can demand, then the only place you can change the warning is the agency that approves it. That’s a smaller room, and a lot harder to get into, than a Missouri courtroom with nine days and twelve jurors. Whether that’s the point of a uniformity clause or the problem with one depends on where you sit.
If you’ve got a dispute over pesticide application, drift onto your property, or an exposure you believe hurt you, the theories still standing are narrower than they were in May. They aren’t gone. Send us a message or call 612-470-6529.
Sources: Monsanto Co. v. Durnell, 609 U. S. 371 (2026) (Kavanaugh, J.), No. 24–1068, decided June 25, 2026, and the dissenting opinion of Jackson, J.; Bates v. Dow Agrosciences LLC, 544 U.S. 431 (2005); Riegel v. Medtronic, Inc., 552 U.S. 312 (2008); 7 U.S.C. § 136v(b); Minn. Stat. § 18B.07; USDA National Agricultural Statistics Service, Minnesota State Agriculture Overview (2025). This article is general commentary on published decisions and Minnesota statutes, not legal advice, and reading it does not create an attorney–client relationship. Whether any particular claim survives preemption depends on facts specific to that matter. No outcome is promised or implied.