Why the US‑Canada Trade War Could Change How American Farmers Grow Their Crops for Years

 

Why the US‑Canada Trade War Could Change How American Farmers Grow Their Crops for Years

## A Broken Alliance, A Bitter Harvest

For generations, the world's longest undefended border has been a symbol of trust and shared prosperity. American and Canadian farmers have operated as partners, not adversaries, moving livestock, machinery, and grain across the 49th parallel with a handshake and a promise.

That era ended on a sweltering Saturday in August 2026.

When trade talks between the United States and Canada collapsed on August 22, President Donald Trump made good on his threat, slapping **50% tariffs** on a sweeping range of Canadian imports worth roughly **$20 billion (CAD $27 billion)**. The list was broad and punitive: dairy, alcohol, appliances, clothing, furniture, steel, aluminum — and a slew of agricultural products that had moved freely across the border for decades.

Canada didn't blink. Prime Minister Mark Carney announced a **dollar‑for‑dollar** retaliation, with counter-tariffs of **15%, 25%, and 50%** on over 700 U.S. products, set to take effect September 8. The Canadian list targeted American steel, dairy, appliances, agricultural equipment, pulp and paper, electronics, seafood, and more. "Canada will match the United States tariffs dollar for dollar, rate for rate," declared Finance Minister François-Philippe Champagne.

The message was unmistakable: **the longest undefended border in the world had become a front line.**

For American farmers, already battered by soaring fertilizer costs, drought, and the economic fallout of the Iran war, this was a disaster they didn't see coming — and one they may not survive.

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## The Fertilizer Crisis: When Potash Becomes Politics

### The 85% Dependency

Here's the number that should keep every American farmer awake at night: **85%**.

That's the share of potash — a critical fertilizer ingredient — that U.S. farmers import from Canada. Without it, yields drop. Crops fail. The food supply chain fractures.

Potash is a potassium-rich mineral mined primarily in Saskatchewan, where the soil holds the world's largest reserves. It's essential for plant growth, helping crops resist drought, disease, and nutrient deficiency. For corn, soybeans, wheat, and virtually every major American commodity crop, potash is not optional.

Saskatchewan Premier Scott Moe, whose province will soon supply **half of the world's potash**, has fiercely rejected any suggestion of export levies on the mineral. "What we, as a province, cannot and will not support is any kind of export tariff on our natural resources," he said. His reasoning was blunt: taxing potash exports would backfire by costing Canadian jobs and pushing U.S. buyers toward other suppliers — likely Belarus.

But the threat remains. If pushed too far, Canada could levy export tariffs on potash, raising prices for U.S. buyers and squeezing already-thin farm margins. As one analysis put it, "There is an unspoken threat that it could expand to a crucial component in fertilizer that U.S. farmers rely on".

### Nitrogen: The Iran War Connection

The potash threat comes on top of another crisis. When the U.S. and Israeli war with Iran shut down shipping through the Strait of Hormuz, it cut off a large source of nitrogen fertilizer, sending prices soaring. Nitrogen, which washes out of soil and must be reapplied every year, is the backbone of modern agriculture. Without it, yields plummet.

The combined effect has been devastating. A Farm Bureau survey in April 2026 found that **70% of farmers said they couldn't afford all the fertilizer they needed during spring planting**. Fertilizer costs have jumped about **40% this year**. And with the trade war adding uncertainty to potash supplies, farmers are facing a choice: **cut back on fertilizer and accept smaller harvests, or take on more debt and pray for better prices.**

### A Slow-Motion Crisis

The effects won't be visible overnight. A farmer who reduces fertilizer use by 10% this year might not notice the difference until the combine rolls through the field in autumn — and the yield monitor shows a 10-bushel-per-acre shortfall. But across thousands of farms, those small reductions add up.

**Smaller harvests lead to higher food prices.** Higher food prices lead to tighter household budgets. Tighter budgets lead to less spending. And less spending slows the entire economy.

All because a fertilizer ingredient became a bargaining chip.

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## The Machinery Trap: When Parts Cross the Border 11 Times

### The Integrated Supply Chain

American farmers don't just buy equipment. They buy *systems* — tractors, combines, planters, and sprayers assembled from components that crisscross the border multiple times before reaching the dealership.

"Farm equipment is assembled from parts that cross the border. Live cattle and processed foods also move both ways," explains agricultural researcher Dr. Rodney B. Holcomb. "Tariffs can raise costs along that chain."

When the U.S. imposes a 50% tariff on Canadian steel and aluminum, it doesn't just hurt Canadian mills. It raises the cost of every piece of equipment that contains those metals — which is to say, virtually every piece of equipment on a modern farm.

Canada's retaliatory tariffs on agricultural equipment will hit American manufacturers directly. For farmers in border states like Minnesota — which exports about **$5.5 billion in goods to Canada each year** — the impact is immediate and personal.

### The Squeeze

Gary Wertish, president of the Minnesota Farmers Union, puts it bluntly: "It's putting downward pressure on our prices that we are able to sell the products for. So we're getting squeezed on both ends."

He's not exaggerating. In Minnesota, creditors are required by state law to enter a mediation period with a farm owner before foreclosure. Wertish said **more Minnesota farmers have entered that mediation process this year than in the last three years combined** — a trend he attributes, at least partly, to tariff impacts.

"If the U.S. doesn't change its trade policies," warns Jacob Walker, an international trade consultant, "the likelihood that Minnesota has built up the infrastructure to withstand the gap left from Canadian exports, it's unlikely. It's going to hurt."

### A Perfect Storm

For farmers like Lynwood Broaddus, who grows corn and soybeans in Caroline County, Virginia, the trade war is just one piece of a much larger puzzle. "This year has been basically the perfect storm of things. Mother Nature, economic conditions on both supply sides, but then also on the prices that we do receive [for produce]," said Scott Sink, president of the Virginia Farm Bureau Federation.

Drought, spring freezes, skyrocketing gas prices, and now tariffs — all hitting at once. "Diesel fuel is going to be something that's going to hurt," Broaddus said. "But we have to get that crop in one way or another."

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## The Long Game: How Trade Policy Reshapes Farming

### The 2018 Precedent

History offers a grim preview. When China retaliated against Trump's first-term tariffs in 2018, it targeted U.S. soybeans and automobiles. American agricultural exports to China **fell by $7 billion to $10 billion a year** as Chinese buyers shifted to Brazilian suppliers.

The lesson was brutal: **trade flows reorganize faster than farmers can adapt.** When North American trade barriers go up, U.S. imports of fruits and vegetables from Canada and Mexico typically drop, with buyers turning to Australia and Argentina instead. The result is often higher consumer prices for key agricultural products in the United States.

### Will History Repeat?

Canada is one of the largest markets for American food, importing about **$28 billion** in U.S. agricultural products in 2025. Both countries are deeply integrated in agricultural trade and farm equipment markets. If Canadian buyers shift to other suppliers — or if American farmers lose access to Canadian markets — the damage could be years in the making.

As one analyst put it, "When North American trade barriers go up, U.S. imports of fruits and vegetables from Canada and Mexico typically drop, with buyers turning to Australia and Argentina instead."

### A New Crop of Decisions

The enduring effect of this trade war, if it continues to escalate, won't be a single bad season. It will be a series of hard choices:

- Which crops to plant — and which to abandon

- How much fertilizer to apply — and how much yield to sacrifice

- Whether to invest in new equipment — or make do with aging machinery

- Whether to expand — or to get out

Across thousands of farms, these decisions will add up. Some farmers will switch to less fertilizer-intensive crops. Others will reduce acreage. A few will walk away entirely.

**The American agricultural landscape, shaped by decades of free trade, is about to be remade by tariffs.**

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## The Human Toll: 'Remember the Little Guy'

### Virginia's Warning

Senator Tim Kaine (D‑Va.) sat down with Virginia farmers in late August to hear their concerns. Canada is Virginia's largest export market. In 2025, **$2.9 billion in goods** were exported to Canada, representing 15% of the state's total goods exports.

The farmers didn't hold back. "Commodity prices have been sort of flat," Kaine said. "All the input prices are going up, export markets are shutting down. You really worry about the ability of families to stay in."

When asked what he would say to those negotiating the tariff deals, Broaddus offered a plea: "Remember the little guy" — including himself and other farmers who eventually bear the brunt of rising costs that are then passed on to consumers.

### Minnesota's Mediation Crisis

In Minnesota, the numbers are even more stark. "It's almost like the weather forecast. It changes day to day," said Gary Wertish. But the trend is clear: more farmers are entering foreclosure mediation than in the last three years combined.

For the families behind those farms, the trade war isn't an abstraction. It's the difference between passing the farm to the next generation and watching it be auctioned off to the highest bidder.

### The Dairy Divide

Not everyone is opposed to the tariffs. The National Milk Producers Federation thanked the Trump administration for continuing to pressure Canada over what it calls unfair dairy trade practices.

"We appreciate the Administration's persistence in standing up for American dairy producers and exporters who have waited far too long for Canada to live up to its promises," said Krysta Harden, president and CEO of U.S. Dairy Export Council.

But even dairy farmers may find that the cure is worse than the disease. Canada's retaliatory tariffs will hit American dairy exports hard, and the broader economic disruption could reduce demand for all agricultural products.

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## The Lessons of History

### The 2018 Tariff Hangover

The Trump administration's first trade war with China offers a sobering preview. Research shows U.S. agricultural exports to China **fell by $7 billion to $10 billion a year** — a loss that took years to partially recover.

When North American trade barriers go up, the pattern is similar. U.S. imports of fruits and vegetables from Canada and Mexico typically drop, with buyers turning to other suppliers. The result is often higher consumer prices for key agricultural products in the United States.

### A Different Kind of Fight

This time, the stakes are different. The U.S. is fighting a trade war with its largest agricultural trading partner — a country that supplies 85% of its potash, shares integrated supply chains, and has a leader who has promised to match tariffs "dollar for dollar."

Carney's message to Trump was blunt: "Canada will match the United States tariffs dollar for dollar, rate for rate." And he means it.

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## What Comes Next

### The September Deadline

Canada's retaliatory tariffs take effect September 8. For American farmers, that's the day when the costs of the trade war become real — and permanent.

If the tariffs remain in place for years, as some analysts expect, the damage could be long-lasting. Farmers may have to reduce fertilizer use, switch to less profitable crops, or exit the industry entirely.

### The Potash Wild Card

The biggest unknown is whether Canada will eventually impose export tariffs on potash. Saskatchewan Premier Scott Moe has rejected the idea, but the pressure from other provinces may grow as the trade war drags on.

If potash exports are taxed, American fertilizer prices could skyrocket — and with them, the cost of producing food.

### A Chance for Diplomacy

Not everyone has given up on a resolution. Agriculture Secretary Brooke Rollins acknowledged that farmers and ranchers are worried about the trade war, but she defended Trump's negotiating tactics. The administration is "working closely with ranchers to grow America's cattle-herd size, which is currently at a multi-decade low."

But for farmers facing foreclosure, "working closely" isn't enough. They need relief — and they need it now.

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## Frequently Asked Questions

### 1. Why is potash so important to American farmers?

Potash is a potassium-rich mineral used in fertilizer to help crops grow. It's essential for plant health, drought resistance, and yield. The U.S. imports about **85% of its potash from Canada**. Without it, crop yields would drop significantly.

### 2. How will the trade war affect fertilizer prices?

Fertilizer prices are already high due to the Iran war, which disrupted nitrogen supplies. If Canada imposes export tariffs on potash, prices could rise even further. A Farm Bureau survey found **70% of farmers couldn't afford all the fertilizer they needed** during spring planting.

### 3. Will American farmers switch to other suppliers?

Canada is the world's largest potash exporter. Other suppliers like Belarus exist, but switching would take time and increase costs. Saskatchewan Premier Scott Moe warned that taxing potash exports would push U.S. buyers toward other suppliers.

### 4. How will the tariffs affect farm equipment?

Farm equipment is assembled from parts that cross the border multiple times. Tariffs on steel, aluminum, and finished equipment will raise costs for American farmers, squeezing already thin margins.

### 5. What crops will be most affected?

Commodity crops like corn, soybeans, and wheat are highly fertilizer-dependent. If fertilizer prices rise, farmers may switch to less fertilizer-intensive crops or reduce acreage.

### 6. Will consumers see higher food prices?

Yes. Reduced fertilizer use leads to smaller harvests, which leads to higher food prices. As one analysis put it, "The lasting impact could emerge later in smaller future harvests".

### 7. How are farmers coping?

Many are taking on more debt, cutting costs, or considering exit. In Minnesota, **more farmers have entered foreclosure mediation this year than in the last three years combined**. Virginia farmers are calling on policymakers to "remember the little guy".

### 8. Can the trade war be resolved?

Both sides have signaled they're open to negotiations, but no talks are currently scheduled. U.S. Trade Representative Jamieson Greer said there are no "open channels" of communication.

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## A Harvest of Consequences

The U.S.-Canada trade war is not just another political fight. It is a fundamental threat to the way American farmers grow their crops — and to the food supply that sustains the nation.

The numbers are stark: 85% of potash from Canada. A 40% increase in fertilizer costs. A 70% of farmers who can't afford what they need. Thousands of farms in foreclosure mediation.

The effects of this trade war, if it continues to escalate, will not be a single bad season. They will be a slow, grinding erosion of American agricultural capacity — smaller harvests, higher food prices, and fewer family farms.

For farmers like Lynwood Broaddus, the message is simple: "Remember the little guy." The little guy who grows the food, who feeds the nation, who has been caught in the crossfire of a trade war he never asked for.

The tariffs took effect on August 22. Canada's retaliation begins September 8. And for American farmers, the harvest of consequences has only just begun.