Minnesota’s agricultural landscape is dominated by corn and soybeans, which together blanket millions of acres across the southern and western parts of the state. But the crop list runs much deeper than that. Hard red spring wheat, potatoes, sugar beets, oats, alfalfa, and wild rice all hold significant ground, and a perennial grain called Kernza is starting to carve out a niche. The mix reflects the state’s geographic range, from the flat, tile-drained prairies of the southwest to the sandy soils of central Minnesota and the boggy lowlands of the north.
Corn and Soybeans Run the Show
If you fly over southern Minnesota in July, you will see an almost unbroken patchwork of corn and soybean fields. These two crops account for the vast majority of the state’s planted acreage, and they are typically grown in rotation with each other. A long-running cropping systems trial in southwestern Minnesota evaluated a two-year soybean-corn rotation alongside a four-year rotation that added oats and alfalfa, tracking performance from 1992 through 2007.1Crop Management. Productivity, Economics, and Soil Quality in the Minnesota Variable‐Input Cropping Systems Trial The two-year corn-soybean cycle remains the default on most farms because it is straightforward, profitable, and supported by well-established seed, chemical, and equipment supply chains.
Minnesota’s corn goes in several directions. A large share is fed to livestock, either as whole grain or as corn silage, which dairy and beef operations depend on. Surveys of Minnesota dairy herds have found that all conventional farms fed corn, corn silage, and hay as core ration components.2Journal of Dairy Science. Management practices on organic and conventional dairy herds in Minnesota Another significant share is processed into ethanol. Minnesota has long been one of the top ethanol-producing states, and corn ethanol plants are scattered across the rural landscape. The remainder enters the food supply chain as sweeteners, starches, and cooking oils.
Soybeans are similarly versatile. They are crushed for oil used in everything from salad dressing to biodiesel, and the leftover soybean meal is one of the main protein sources in animal feed worldwide. Minnesota consistently ranks among the top three or four soybean-producing states in the country. Because soybeans fix nitrogen from the air through a symbiotic relationship with soil bacteria, they also benefit the corn that follows in rotation by leaving behind some residual nitrogen in the soil.
Hard Red Spring Wheat and Small Grains
Minnesota has deep ties to wheat, particularly hard red spring wheat. The northwestern corner of the state, stretching into the Red River Valley along the North Dakota border, is prime wheat country. When growers in this region select wheat varieties, they focus primarily on grain yield, protein content, and straw strength, because high-protein spring wheat commands premium prices from flour millers and bakers.3Journal of Plant Registrations. Registration of ‘Norden’ Hard Red Spring Wheat The bread flour made from this wheat has strong gluten-forming properties, which is why it ends up in artisan bread loaves and pizza dough.
Oats are another small grain with staying power in Minnesota. They show up both as a cash crop sold for human consumption and as part of longer crop rotations. In the four-year rotation studied in southwestern Minnesota, oats were sown with alfalfa as a nurse crop: the oats grow quickly and are harvested, while the alfalfa establishes underneath and provides forage for the following year.1Crop Management. Productivity, Economics, and Soil Quality in the Minnesota Variable‐Input Cropping Systems Trial This kind of rotation helps break pest cycles and build soil organic matter, even though it is less common than the simpler corn-soybean pattern.
Barley also appears in the northern counties, often grown under contract for malting companies that supply the brewing industry. Minnesota’s climate, with cold winters and relatively short growing seasons in the north, suits these small grains well.
Sugar Beets of the Red River Valley
Sugar beets are one of Minnesota’s most distinctive crops, concentrated almost entirely in the Red River Valley. The valley’s deep, fertile soils and flat terrain are ideal for sugar beet production. Growers there belong to cooperatives that own and operate massive processing plants, turning harvested beets into refined white sugar. The state routinely ranks as one of the top sugar beet producers nationally, alongside North Dakota. Sugar beet harvest in the fall is an intense, short-window operation: once temperatures drop, the beets are pulled from the ground and piled in enormous outdoor storage facilities where they stay cool naturally through the winter while awaiting processing.
Growing sugar beets is labor- and input-intensive compared with corn or soybeans. The crop requires careful pest management, precise fertilizer application, and specialized planting and harvesting equipment. But the returns can be attractive, especially for cooperative members who share in the profits from sugar sales. Cercospora leaf spot is a persistent fungal disease in sugar beet fields, and resistance management is an ongoing challenge for growers in the region.
Potatoes in the Sandy Soils
Central Minnesota, particularly the area around the towns of Park Rapids and Wadena, is potato country. The sandy, well-drained soils there are well suited to potato production. Research evaluating the water demands of corn, soybean, and potato in Minnesota has focused specifically on central Minnesota because that is where potato acreage is concentrated, analyzing whether precipitation historically meets the crop’s water needs during sensitive growth stages like tuber initiation and bulking.4Crop Science. The water risk profile of corn, soybean, and potato in Minnesota from 1951 to 2024
Potatoes are more water-sensitive than corn or soybeans, which is why irrigation is common in central Minnesota’s potato fields even though most of the rest of the state’s cropland relies on rain alone. The crop is grown for a range of markets: processing potatoes go to french fry and chip manufacturers, table stock potatoes go to grocery stores, and seed potatoes are sold to growers in other states. Minnesota is not as large a potato producer as Idaho or Washington, but it plays a meaningful role in the Upper Midwest’s potato supply chain.
Wild Rice, a Crop Unlike Any Other
Wild rice holds a unique place in Minnesota agriculture. It is the state grain, and for centuries it was harvested by Indigenous communities from natural lake and river beds. Over time, a commercial wild rice industry developed, and today most of the world’s wild rice is harvested as a cultivated crop from paddies in Minnesota.5PubMed. Wild rice: the Indian’s staple and the white man’s delicacy Cultivated paddy rice is grown primarily in the north-central part of the state, where shallow, controlled-flooding operations mimic the natural wetland environment the plant prefers.
There is a longstanding cultural and economic tension between paddy-grown wild rice and lake-harvested wild rice. The Ojibwe and other Indigenous nations in Minnesota consider hand-harvested wild rice, or manoomin, to be sacred and integral to their culture. Paddy operations produce far more volume at lower prices, which has undercut the market for lake-harvested grain. The flavor and texture profiles differ as well: lake-harvested wild rice tends to be darker, more varied in grain size, and nuttier in flavor. Paddy rice is more uniform and typically less expensive. Both products are sold under the “wild rice” label, though some producers and advocacy groups have pushed for labeling distinctions.
Forage Crops and the Livestock Connection
Minnesota is a major dairy and livestock state, and that drives demand for forage crops. Alfalfa is the most important perennial forage, grown on hundreds of thousands of acres, mostly in the southern and central parts of the state. It is cut multiple times per season and fed as hay or haylage to dairy cows, beef cattle, and horses. Beyond its value as feed, alfalfa improves soil health: it is a legume that fixes atmospheric nitrogen, reducing the need for synthetic fertilizer on fields where it grows.
Corn silage, where the entire corn plant is chopped and fermented rather than just the grain harvested, is another staple of Minnesota’s dairy operations. The survey of Minnesota dairy herds found that corn, corn silage, and hay were universally fed on conventional farms, highlighting just how central these forage crops are to the state’s livestock economy.2Journal of Dairy Science. Management practices on organic and conventional dairy herds in Minnesota Organic dairy farms in that same study showed more variation in their feeding programs, with pasture being the only feed used across all organic operations.
The Drainage System That Makes It All Possible
A feature of Minnesota agriculture that most people never think about is the extensive network of subsurface tile drainage buried beneath the fields. Southern Minnesota sits on land that was originally tallgrass prairie and wetland. Much of that land would be too waterlogged to farm profitably without artificial drainage. Over the past century or more, farmers have installed perforated pipes below the root zone that channel excess water into ditches and streams, lowering the water table enough for crops to thrive.
Southern Minnesota is one of the most tile-drained regions in North America. A meta-analysis of tile drainage effects on stream hydrology found that watersheds with medium to high tile drainage extent are concentrated in the U.S. Midwest, with southern Minnesota specifically identified as a major cluster.6Journal of Hydrology. The double-edged sword of agricultural tile drainage effects on stream flashiness: A meta-analysis This infrastructure has boosted crop productivity substantially. Research in the Blue Earth River Basin in south-central Minnesota has documented how subsurface drainage has progressively increased land-use intensity and improved crop productivity over the past several decades.7PubMed. Drainage effects on stream nitrate-N and hydrology in south-central Minnesota (USA)
The tradeoff is environmental. Tile drainage accelerates the movement of nitrate from farm fields into waterways, contributing to downstream water quality problems including the hypoxic zone in the Gulf of Mexico. That same Blue Earth River Basin research found that agricultural drainage has influenced riverine nitrate concentrations, channel dimensions, and hydrology.7PubMed. Drainage effects on stream nitrate-N and hydrology in south-central Minnesota (USA) This reality has made nutrient management and conservation practices a persistent policy conversation in the state.
Diseases That Threaten the Bottom Line
Growing millions of acres of a handful of crops inevitably invites pest and disease problems. For soybeans, the most economically damaging diseases in the United States over the past two decades have been soybean cyst nematode, charcoal rot, and seedling diseases, with average annual losses across the country reaching roughly $4.5 billion. About 85 percent of those losses occurred in the northern United States, the region that includes Minnesota.8PubMed Central. Dissecting the economic impact of soybean diseases in the United States over two decades
Soybean cyst nematode is a microscopic roundworm that feeds on soybean roots and can slash yields without any obvious aboveground symptoms until the damage is severe. It thrives in the corn-soybean rotations that dominate Minnesota, because soybeans appear in the same fields every other year, giving nematode populations a reliable host. Resistant soybean varieties are the main management tool, but nematode populations can adapt to overcome resistance over time, which is one reason agronomists push for longer and more diverse rotations.
Corn faces its own set of challenges, including gray leaf spot, Goss’s wilt, and various ear rots. Northern corn leaf blight can be problematic in cool, humid growing seasons, which Minnesota certainly provides. For wheat, Fusarium head blight, sometimes called scab, is a recurring headache that reduces both yield and grain quality. Infected grain can contain mycotoxins, making it unsuitable for food or feed use, so wheat growers in the Red River Valley monitor disease pressure closely and rely on resistant varieties and fungicide applications.
Cover Crops and Soil Conservation
The environmental costs of intensive row-crop agriculture have spurred growing interest in cover crops across Minnesota. The basic idea is to plant something, often cereal rye or another fast-establishing small grain, after the main cash crop is harvested in fall. The cover crop holds the soil in place over winter, takes up residual soil nitrogen that would otherwise leach into waterways, and adds organic matter when it decomposes in spring.
Research in southwestern Minnesota has investigated how fall planting date and climate affect cereal rye biomass and nitrogen uptake, and whether rye cover crops can reduce nitrate losses through subsurface drainage.9Agronomy Journal. Potential for a Rye Cover Crop to Reduce Nitrate Loss in Southwestern Minnesota The challenge in Minnesota is that the growing season is short and fall temperatures drop quickly, which limits how much growth a cover crop can put on before winter. Corn harvest often runs into October, leaving a narrow window. Still, as seed costs have declined and technical support has improved, cover crop adoption has been gradually increasing, encouraged by state cost-share programs and voluntary conservation initiatives.
Kernza and the Push Toward Perennial Grains
One of the more unusual crops emerging from Minnesota is Kernza, a perennial grain developed through ongoing domestication of intermediate wheatgrass. Unlike corn, wheat, or soybeans, which must be replanted every year, Kernza comes back on its own for multiple growing seasons. The plant is known for its deep, extensive root system, which can recycle soil nutrients and sequester carbon at depths that annual crops cannot reach. The University of Minnesota released ‘MN-Clearwater’ as the first food-grade Kernza cultivar available for commercial sale, making it a cornerstone resource for both researchers and growers interested in perennial grain agriculture.10Journal of Plant Registrations. ‘MN‐Clearwater’, the first food‐grade intermediate wheatgrass (Kernza perennial grain) cultivar
Kernza grain is small compared with conventional wheat, and yields are still much lower than what you would get from an annual wheat field. That means it is not about to replace spring wheat in the Red River Valley. But it has found a market in specialty baked goods, craft beer, and cereals. Several Minnesota-based breweries and food companies have launched Kernza products, and the perennial grain’s environmental story, with its soil-building root system and low input requirements, resonates with consumers willing to pay a premium. For researchers, the broader significance is the proof of concept: if a perennial grain crop can work commercially even at small scale, it opens the door to rethinking cropping systems that have been built entirely around annuals for the last century.
The Geography Behind the Crop Map
Minnesota spans a surprising range of growing conditions for a single state. The southeastern corner has longer, warmer growing seasons and rolling terrain that suits corn and soybeans. The southwestern prairies are flat, fertile, and heavily tile-drained, producing enormous corn and soybean yields. The Red River Valley in the northwest is cooler, flatter still, and defined by the heavy clay soils of an ancient glacial lakebed, which is ideal for wheat, sugar beets, and potatoes. Central Minnesota’s sandier soils favor irrigated potatoes and some specialty crops. The northern third of the state, cooler and with more marginal soils, supports forage crops, wild rice paddies, and smaller-scale diversified farms.
Climate change is starting to shift these boundaries. Warmer average temperatures and longer frost-free periods have allowed corn and soybean cultivation to push further north than was economically viable a few decades ago. At the same time, rainfall patterns are becoming more variable, with heavier spring downpours and more frequent mid-summer dry spells. The water-risk research covering corn, soybean, and potato in Minnesota examined whether precipitation has historically met crop water demands during critical growth stages, and whether those gaps have changed over the past seven decades.4Crop Science. The water risk profile of corn, soybean, and potato in Minnesota from 1951 to 2024 For a state that has long relied on rainfed agriculture for most of its acreage, those shifts matter. Growers are increasingly looking at soil moisture monitoring, irrigation expansion, and drought-tolerant crop varieties as hedges against a less predictable climate.