There's a powder sitting under the Canadian prairie that your grandma used on her tomatoes and that a handful of companies have turned into one of the most profitable chokeholds in global agriculture.
It's potash, the potassium-based fertilizer that keeps corn standing upright and soybeans actually producing.
And if you've noticed your grocery bill acting like it just discovered crypto, a big chunk of that story starts in a mineshaft in Saskatchewan.
It's the fourth-most-common element in the Earth's crust, and your body literally needs it to keep your heart beating.
But the *mineable* stuff is concentrated in a few places—Canada, Russia, Belarus—and the companies sitting on those deposits figured out decades ago that scarcity pays better than abundance.
Canpotex handles overseas sales for the big Canadian producers, and for years it coordinated with its Russian and Belarusian counterparts to keep supply tight and prices high.
It's the OPEC of dirt, minus the dramatic press conferences.
In 2021, potash was running around $200 a ton.
The stuff is basically free to dig up once you've built the mine.
The cost is the mine itself—billions of dollars and years of permitting.
It's that you can't spin up a competitor before the next planting season, so the incumbents can name their price and let the market "adjust." American farmers felt it immediately.
Fertilizer is one of the biggest line items on a row-crop budget, sometimes 20-30% of input costs.
When potash tripled, that money came out of somebody's pocket.
It came out of the farmer's margin, and then it came out of your wallet at the meat and cereal aisle, because those costs don't evaporate—they get passed along like a hot potato nobody wants to hold.
Sanctions on Russia and Belarus after 2022 scrambled the cozy arrangement, and prices have cooled off from their absurd peak.
But "cooled off" in fertilizer-land still means roughly double what it was a few years ago.
That's a market finding a new floor and getting comfortable there.
BHP is building a massive new potash mine in Canada—the Jansen project—which should add real supply by the late 2020s.
But it also means the incumbents have every incentive to squeeze margins now while they still can, before the new kid shows up and ruins the party.
Meanwhile, the US imports the overwhelming majority of its potash.
So we're basically paying rent to a foreign cartel for the right to grow food, and acting surprised when the rent goes up. **The takeaway:** Potash is the most boring-sounding global commodity that quietly taxes every meal you eat.
Nobody's marching in the streets over fertilizer, which is exactly why the people selling it sleep great at night.
Final Thoughts
If you want to understand why food costs what it does, stop staring at the egg aisle and start staring at Saskatchewan.