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 is farmed without herbicide.
So when the Supreme Court decides what a pesticide label can be made to say, it is deciding something that touches most of the arable land in this state — and, because glyphosate is sold 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 had used Roundup for about twenty years and that it had caused his non-Hodgkin’s lymphoma. His theory was failure to warn: Roundup’s label carried 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.
The chain of reasoning is worth following, because it explains why this was never really a fight about whether glyphosate causes cancer.
The Federal Insecticide, Fungicide, and Rodenticide Act contains 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 must register it with EPA, and EPA must 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 evaluated glyphosate repeatedly and concluded it is not likely to cause cancer, a view shared by regulators in many other countries. So EPA approved a label with no cancer warning.
And then the piece that closes the loop: once EPA approves a label, federal law requires the manufacturer to use that label until EPA approves or requires a change. Selling with a different label exposes the manufacturer to civil and criminal penalties.
A jury verdict that says “you should have added a cancer warning” therefore imposes a state labeling requirement different from the federal one. Under § 136v(b), it is preempted.
The Minnesota fingerprint on the rule
Here is the part almost nobody will notice.
The precedent the Court leaned on to confirm its reading was Riegel v. Medtronic, 552 U.S. 312 (2008), which construed a preemption clause in the Medical Device Amendments that is, in the Court’s word, “nearly identical” to FIFRA’s. Riegel held that FDA’s premarket approval of a device imposes federal “requirements” that displace 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.
The template that just decided the Roundup question — federal agency approval of a product’s terms creates a federal requirement, and a jury verdict demanding different terms is a competing state requirement — was worked out in litigation over a Minnesota company’s product. Minnesota did not merely receive this doctrine. Minnesota, in a real sense, supplied it.
And Minnesota law already defers to that label
There is a second, more concrete Minnesota connection, and it is in our own statutes.
Minnesota does not 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 is not merely a federal document that happens to arrive on a jug sold in Minnesota. It is the standard of conduct Minnesota law imposes on every applicator in the state. A Minnesota farmer who ignores it is violating Minnesota law.
That makes the uniformity holding coherent in a way that is easy to miss when the case is described only as a win for a chemical company. Minnesota commands applicators to follow the federal label. It would be strange for Minnesota juries, at the same time, to punish the manufacturer for printing that label rather than a different one. Two masters, one jug.
Whether the label is right is a separate question, and a serious one — but it is a question for EPA and Congress, and after Durnell it is emphatically not a question for a state jury.
What the decision does not decide
This matters, and it is where the coverage tends to overshoot.
Durnell holds that a failure-to-warn claim requiring a label change is preempted. It does not hold that FIFRA preempts everything.
The Court’s own precedent on that point, Bates v. Dow Agrosciences, 544 U.S. 431 (2005), remains on the books, and Bates said this directly:
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 — drawing a line between label claims about efficacy, which EPA does not review at registration, and claims about safety, which it does. The dissent thought that line was invented and that Bates had already rejected the majority’s theory. That disagreement is now the fault line, and it will be litigated hard.
But nothing in Durnell disturbs the categories Bates preserved. A claim that does not 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 is applied in a way that drifts onto a neighbor’s crop, or applied to a property nobody asked to have treated — which § 18B.07 addresses specifically — the dispute is between the parties over conduct, not over what EPA printed. Preemption of labeling requirements has nothing to say about it. Drift and misapplication claims among Minnesota neighbors are unaffected.
Where this leaves people here
For growers and applicators: the label you are already legally required to follow is now more firmly the single national standard. Practically, that is stability — the same product, the same instructions, the same recordkeeping obligations across state lines, without fifty juries pulling in different directions. Follow it, document that you followed it, and keep the documentation.
For someone who believes a pesticide made them sick: one route is now closed in Minnesota courts as it is everywhere else. That is a real loss, and I am not going to dress it up. What remains are the theories Bates protected and any claim that does not depend on rewriting the label. Those are harder cases, and they are fact-intensive, and they should be evaluated by someone who reads the actual chain — what was applied, by whom, under what instructions, with what exposure, over what period.
For everyone: the decision relocates the argument rather than ending it. If the federal label is now the ceiling on what a state can demand, then the only forum that can change the warning is the agency that approves it. That is a smaller and much less accessible arena than a Missouri courtroom with nine days and twelve jurors — which is either the point of a uniformity clause or the problem with one, depending on where you sit.
If you have a dispute involving pesticide application, drift onto your property, or an exposure you believe caused harm, the surviving theories are narrower than they were in May but they are not gone. Send us a message or call 612-470-6529.
Sources: Monsanto Co. v. Durnell, 609 U. S. ___ (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.