Three crops — corn, wheat, and soybeans — underpin much of the world's food supply, from livestock feed to bread to cooking oil. Their global prices have roughly doubled since 1995, but the journey has been anything but smooth: sharp spikes during the 2008 food crisis, the 2012 U.S. drought, and the 2022 disruption following Russia's invasion of Ukraine. This guide charts three decades of crop prices, shows how the three grains move together and apart, and explains why they swing so violently.
How much have crop prices risen since 1995?
Indexed to 1995, soybeans and corn have more than doubled while wheat has risen more modestly. The indexed view above lets you compare growth directly despite the crops trading at different dollar levels. The broad story is a step-change higher around 2007–2008, after which prices never fully returned to their cheap late-1990s levels — driven by rising global demand, biofuel mandates that diverted corn to ethanol, and higher energy and fertilizer costs.
The big price spikes: 2008, 2012, and 2022
Three spikes dominate the chart. The 2008 surge came amid a global food-price crisis, soaring oil costs, and export restrictions. The 2012 jump followed a severe U.S. Midwest drought that slashed the corn and soybean harvest. The 2022 spike hit after Russia's invasion of Ukraine — together the two countries are major wheat and corn exporters — sending grain prices to multi-year highs and stoking food inflation worldwide.
Why crop prices are so volatile
Crops are uniquely volatile because supply is set by the weather and can't adjust quickly. A drought or flood in a key growing region can wipe out a chunk of global supply in a single season, and farmers can't simply produce more mid-year to respond. Demand, meanwhile, is fairly steady — people and livestock have to eat — so even small supply shocks produce big price swings. Layer on export bans, currency moves, and speculation, and grain prices can double or halve within a couple of years.
What drives corn, wheat, and soybean prices
Each grain has its own drivers but they share common forces: weather in major producers (the U.S., Brazil, Argentina, the Black Sea region), energy prices (which set fertilizer and transport costs), the strength of the U.S. dollar (most grain is priced in dollars), and policy — from biofuel mandates to export restrictions. Because the three crops compete for the same farmland and feed markets, their prices tend to rise and fall together even when the immediate trigger affects only one.
Frequently asked questions
How much have crop prices risen since 1995?
Global corn and soybean prices have roughly doubled, while wheat has risen more modestly. The exact indexed changes are shown above.
Why did crop prices spike in 2022?
Russia's invasion of Ukraine disrupted exports from two major grain producers, sending wheat and corn prices to multi-year highs and fueling global food inflation.
What caused the 2008 and 2012 crop price spikes?
2008 was a global food-price crisis amplified by high oil prices and export curbs; 2012 followed a severe U.S. Midwest drought that cut the corn and soybean harvest.
Why are crop prices so volatile?
Supply depends on weather and can't adjust quickly, while demand is steady — so droughts, floods, or export bans cause large price swings within a season or two.
What drives the price of corn, wheat, and soybeans?
Weather in major producing regions, energy and fertilizer costs, the value of the U.S. dollar, and policies like biofuel mandates and export restrictions.