What Crops Do Farmers Grow By Region, Climate, and Time

Farmers grow whatever their climate, soil, and market will support. In the U.S. Corn Belt (Illinois, Iowa, Indiana, and neighboring states), that means mostly corn and soybeans, which together cover about 75% of the region's farmland. In the Pacific Northwest, it shifts to apples, wheat, hops, pears, cherries, and hazelnuts. Globally, rice dominates lowland Asia, wheat covers the Great Plains and Central Asian steppes, and cassava feeds much of sub-Saharan Africa. The short version: location dictates the crop list more than almost any other factor.

Quick answer by region and climate

Here's a fast reference for what farmers actually grow across major regions and climate types. These aren't exhaustive lists, but they reflect the dominant crops you'd find if you visited these places today.

Within any one country or state, crop lists shift significantly by county or province. The USDA's National Agricultural Statistics Service publishes state-level overviews that rank crops by planted acreage and value of production, which is the fastest way to confirm the dominant crops for any U.S. state right now.

The major crop groups, explained simply

When you look at any regional crop list, you'll see the same handful of categories come up over and over. Knowing what each group means helps you read any list, anywhere in the world.

Grains (cereals)

Grains are the most widely grown crop type on earth. Wheat, corn (maize), rice, barley, oats, sorghum, and millet all fall here. They're calorie-dense, storable, and tradeable, which is why they dominate large-scale farming on every continent. Corn and wheat alone account for a massive share of total U.S. harvested cropland each year.

Oilseeds

Oilseeds are grown for the oil extracted from their seeds, and in some cases for high-protein meal left behind after crushing. Soybeans, sunflowers, canola (rapeseed), cottonseed, and peanuts are the major examples. Soybeans are particularly important in the U.S. Midwest, where they're often rotated with corn in a two-year cycle that benefits both crops.

Vegetables and roots

Vegetables cover a huge range, from potatoes and sweet corn to lettuce, tomatoes, and onions. Root crops like cassava, yams, and sugar beets also fall into this broad group. These crops tend to need more intensive management and closer attention to soil moisture than grain crops, which is why they cluster in regions with reliable irrigation or consistent rainfall.

Fruits (and nuts)

Tree fruits and vine crops require long-term investment because orchards and vineyards take years to mature. That's why you see apples concentrated in Washington State (where the climate and soil suit them and the infrastructure for packing and shipping is already built), almonds in California's Central Valley, and citrus in Florida and the Rio Grande Valley of Texas. Nuts like hazelnuts, walnuts, and pistachios follow similar logic.

Fiber and cash crops

Cotton is the classic fiber crop in the U.S. South and Southwest, grown for its lint. Tobacco, once dominant in the Carolinas and Virginia, has declined sharply but is still grown in parts of Kentucky and Tennessee. Sugar crops (sugarcane in Louisiana and Florida, sugar beets in the Red River Valley and Rocky Mountain states) also fall into the cash crop category. These crops tend to be highly location-specific because they need particular temperature ranges and, in the case of sugarcane, a frost-free climate.

Legumes and cover crops

Beyond soybeans, legumes include dry beans, lentils, chickpeas, and field peas. These crops fix nitrogen from the air into the soil, making them valuable rotation partners for grains. Cover crops like phacelia, clover, and winter rye are increasingly common, grown not primarily for harvest but to protect and improve soil between main cash crop seasons. Farmers grow phacelia as a cover crop because it helps protect soil and support healthier farmland between main growing seasons.

Why soil, rainfall, temperature, and season length matter so much

Climate and soil are the real gatekeepers of what any farmer can grow. A farmer doesn't get to pick their weather, and changing soil type is expensive and slow. So the crop list for any region is essentially a response to what the land and sky allow. In other words, the right question is what farmers grow based on local conditions what any farmer can grow.

• Soil type: Heavy clay soils retain water well but can waterlog easily, favoring rice paddies or grasses rather than root vegetables that need drainage. Sandy loam soils drain freely and warm up faster in spring, making them excellent for potatoes and many vegetables. The deep, organic-rich mollisols of the Corn Belt are among the most productive grain-growing soils in the world.
• Rainfall and irrigation: Crops like corn need 20-30 inches of moisture during the growing season. Where rainfall doesn't supply that, farmers irrigate, which is why cotton, alfalfa, and vegetables thrive in otherwise dry regions of Arizona and California. In dryland farming areas like the northern Great Plains, drought-tolerant crops like winter wheat, lentils, and millet dominate.
• Temperature and frost dates: Every crop has a minimum germination temperature and a tolerance threshold for frost. Corn needs soil above 50°F to germinate and can't handle a hard freeze at any growth stage. Cotton needs a long, hot frost-free period of at least 180 days. Short-season crops like barley, oats, and cool-weather vegetables can thrive where summer is brief.
• Growing season length: The number of frost-free days defines what's possible. Southern states like Alabama and Georgia have 200-plus frost-free days, supporting cotton, peanuts, and year-round vegetables. Northern Minnesota or Montana may have 90-120 days, shifting farmers toward spring wheat, canola, and short-season corn hybrids.
• Market access and infrastructure: Even when the climate suits a crop, farmers also need roads, storage, processing facilities, and buyers. This is why crop patterns can cluster around processing plants, like soybean crushing facilities or cotton gins, even within a region where the climate would technically support multiple options.

What farmers grew historically, and how things have changed

The crop map of any country looks very different depending on which century you're looking at. Understanding that shift helps explain why certain regions are so strongly associated with certain crops today, and why those associations sometimes no longer apply.

Ancient civilizations

The earliest large-scale agriculture concentrated around river valleys where annual flooding deposited rich sediment. Ancient Egypt grew emmer wheat and barley along the Nile, along with flax for linen and papyrus for writing. Mesopotamia (modern Iraq) farmed wheat, barley, lentils, onions, garlic, and dates in the fertile floodplains between the Tigris and Euphrates. In Mesoamerica, the "Three Sisters" system combined corn, beans, and squash in a mutually beneficial polyculture. Ancient China concentrated on millet and rice, depending on whether farmers were in the dry north or the wet south. These ancient crop choices weren't random. They were the result of centuries of selecting whatever plants could be reliably cultivated, stored, and traded in each region's particular conditions.

Colonial and early modern periods

European colonization dramatically reshuffled global crop geography. Tobacco became the first major cash crop of the American South in the 1600s, followed by indigo and then cotton after the invention of the cotton gin in 1793. Sugar dominated the Caribbean and parts of South America wherever colonial powers could force labor-intensive cultivation. Meanwhile, the Columbian Exchange sent potatoes, tomatoes, corn, and cacao from the Americas to Europe and Asia, fundamentally changing what farmers there could grow. Potatoes alone transformed northern European agriculture and demographics within two centuries.

19th and 20th century shifts

Mechanization in the 1800s pushed farming toward large-scale monocultures of wheat, corn, and cotton. The introduction of synthetic nitrogen fertilizers in the 20th century (the Haber-Bosch process, commercialized by the 1920s) allowed corn yields to climb dramatically and made it possible to grow grain year after year without rotating in legumes. The "Green Revolution" of the 1960s-70s brought high-yield wheat and rice varieties to South Asia and Latin America, massively increasing production in countries like India, Pakistan, and Mexico. Tobacco, which once dominated the upper South and mid-Atlantic, declined steeply after the 1990s due to falling domestic demand and the end of federal price supports. Today, those same fields in Kentucky and Virginia often grow corn, soybeans, or hemp.

Recent decades

Since around 2000, a few major trends have continued to reshape what farmers grow. Soybean acreage expanded dramatically across South America, particularly in Brazil and Argentina, as global demand for animal feed and vegetable oil grew. In the U.S., the Renewable Fuel Standard created a sustained market for corn ethanol, incentivizing Corn Belt farmers to push corn acreage higher and reducing crop diversity in some areas. Cover cropping and multi-species rotations have become more common as farmers try to manage soil health, weed pressure, and input costs, which is part of why crops like phacelia, cereal rye, and sunn hemp are showing up in more rotation plans today.

How crop lists differ across the U.S., other countries, and ancient civilizations

The same basic factors (climate, soil, market, and history) create very different crop mixes depending on where and when you're looking. A few comparisons help illustrate how big those differences can be.

It's worth noting that subsistence farmers, who grow primarily to feed their own households rather than sell to markets, follow a different logic entirely. If you're wondering what subsistence farmers grow, focus on the crops that reliably produce calories in their local climate and soil. They prioritize caloric reliability, crop diversity, and pest or drought resilience over maximizing yield of a single commodity. That means subsistence farming landscapes in places like rural Kenya, Bangladesh, or highland Peru often look far more diverse than the large monoculture fields common in commercial agriculture.

The Great Plains offer a useful contrast within the U.S. itself. Where the Corn Belt is dominated by corn and soybeans in a tight rotation, Great Plains farmers deal with less rainfall, flatter terrain, and colder winters, pushing them toward winter wheat, grain sorghum, sunflowers, and dry-land cattle operations. The crop mix on the Great Plains has also changed significantly over the past 150 years, shifting from native grassland to dryland wheat, then to irrigated corn and soybeans in some areas as center-pivot irrigation expanded.

How to find out what's grown locally today

If you want to know what farmers are actually growing right now in a specific place, here's how to get there quickly and accurately.

1. Start with USDA NASS State Agriculture Overviews. The NASS Quick Stats tool publishes an annual state-by-state overview that lists crops ranked by planted acreage, harvested acreage, yield, and value of production. This is the most authoritative single source for current U.S. crop data and is updated each spring with the latest estimates. Search for '[your state] USDA NASS state agriculture overview' to find it directly.
2. Check NASS Charts and Maps for field crops. USDA NASS maintains an A-to-Z field crops portal with acreage and yield maps by state and year for all major field crops, including corn, cotton, wheat, and soybeans. This lets you see spatial patterns, not just statewide totals.
3. Use this site's geography-first crop pages. For state-by-state, country-by-country, or historical period breakdowns, this site organizes crop information by geography so you can find what's grown in a specific region without having to piece it together from multiple sources.
4. Cross-check with local Extension Service resources. Every U.S. state has a land-grant university Extension Service that publishes crop budgets, planting guides, and county-level crop data. These are written for farmers in your specific region and climate, making them highly practical.
5. Factor in your local climate variables. Once you have a candidate crop list for your region, check it against your average first and last frost dates, annual rainfall or irrigation access, and soil type. Your county's USDA Natural Resources Conservation Service (NRCS) office can pull Web Soil Survey data for your specific parcel.
6. For historical crop data, consult census records and state agricultural histories. The USDA Census of Agriculture has been conducted every five years since 1840 and is searchable by state and county. State land-grant university libraries often hold detailed agricultural histories that describe what was grown in each county during earlier periods.
7. If you're researching ancient or pre-colonial agriculture, look for archaeobotanical studies, which analyze plant remains from excavation sites, alongside historical records from the period. University archaeology departments and national museum databases often publish this data online.

One practical tip: when looking at any crop list, pay attention to whether it's sorted by acreage or by value. A state might have more wheat acres than any other crop, but a much smaller almond or specialty vegetable sector that contributes more to total farm revenue. Both pieces of information matter depending on whether you're trying to understand land use patterns or economic importance.

The number of crops a farmer grows in a year also varies a lot. In regions with two or three planting windows, a single field might produce multiple crops annually, a common practice in parts of Asia and the warmer U.S. states. In the northern U.S. and Canada, a single main crop per season is the norm, sometimes followed by a fall cover crop. How many crops per year is feasible in a given place is itself shaped by the same climate variables that determine which crops are grown in the first place. A common question is what do farmers grow under plastic in places that need season extension or protection from cold, wind, and heavy rain.