A stunned America froze as President Donald Trump’s trade threats ignited a potash war with Canada, jeopardizing the nation’s food supply in late 2025. The U.S. imports over 90% of its potash—a vital fertilizer nutrient—from Canada, fueling fears that “very severe” tariffs would spike prices, slash crop yields, and drive grocery inflation sky-high.h

A stunned America froze as President Donald Trump’s trade threats ignited a potash war with Canada in late 2025, jeopardizing the nation’s food supply.

Trump, on December 8, warned of “very severe tariffs” on Canadian fertilizer—primarily potash—to boost U.S. production. The U.S. imports over 90% of its potash (potassium-rich fertilizer essential for crop yields), with 85–90% from Canada (mostly Saskatchewan). Experts and farmers feared spikes in fertilizer prices (already high post-2022 peaks), reduced yields for corn, soy, and wheat, and grocery inflation amid fragile supply chains.

Canadian leaders like Saskatchewan Premier Scott Moe urged calm, while industry groups warned tariffs would hurt U.S. farmers more—raising input costs $100+ per ton without quick domestic alternatives (Russia/Belarus supplies limited by sanctions). Some Ontario politicians floated potash export curbs as retaliation, but Moe opposed disrupting North American agriculture.

No tariffs materialized by year-end; threats tied to broader trade talks (dairy, lumber). The “potash war” rhetoric—raw leverage play—highlighted U.S. vulnerability: food security hinging on Canadian mines, threats risking self-inflicted wounds.

As 2025 closed, the stunned hush lingered: no shots fired, but fertilizer’s vital role in America’s breadbasket exposed—potash war averted, supply chain fragility unmasked.