Cereal Rye
Secale cereale L.
Cool-season annual cereal grain that doubles as the most widely used winter cover crop. Cereal rye is the most cold-hardy small grain (Zones 3-8), tolerates poor and acidic soils (pH 5.0-7.0), and overwinters reliably across temperate regions worldwide. Grown for grain (whiskey, bread, livestock feed) and as a fall-planted cover crop for erosion control, residual nitrogen capture, and weed suppression via allelopathy.
Crop Snowflake Score
/acre
/acre
/acre
years
Overview
Cereal rye (Secale cereale) is a vernalization-requiring winter annual: sown in late summer through fall (4-6 weeks before first hard frost is ideal but rye establishes later than any other small grain), it produces fall ground cover, overwinters as a tillered crown, and resumes vigorous growth in early spring before any other cover crop. Seeding rates are 60-120 lb/ac drilled (1-2 bu/ac) for cover-crop or grain stands; planting depth is 0.5-1.5 inches (more sensitive to deep planting than wheat). For cover-crop use, rye is typically terminated at 12-30 inches (anthesis) by herbicide, roller-crimper, or tillage; biomass production frequently exceeds 4,000-6,000 lb/ac dry matter. As a cover crop it can hold up to ~60-100 lb residual N/ac over winter and provides strong allelopathic suppression of small-seeded annual weeds (lambsquarters, pigweed, foxtail, chickweed). For grain harvest, rye matures earlier than wheat (typically late June into July in temperate zones); national yields commonly run 25-50 bu/ac with high-management fields reaching 60-80 bu/ac. Major disease concerns include ergot (manage by rotation and clean seed), stem rust, and Fusarium head blight. Rye is also the seed source for triticale and is the parent species of winter ryegrass cover-crop blends.
Growing Season
- Plant
- Late summer through fall (4-6 weeks before first hard frost is ideal) – Late fall (rye establishes later than any other small grain)
- Harvest
- Early to mid summer (grain); spring (cover-crop termination at boot to anthesis) – Mid summer
- Frost-free days
- 90+
Yield
- Typical yield
- 35 bu/acre (grain)
- Productive lifespan
- 1 years
- Years to full prod.
- 1
Market Fit
Scoring data for this axis is being loaded.
Climate Fit
Scoring data for this axis is being loaded.
Soil Compatibility
Soil Texture
Drainage
Infrastructure Fit
Scoring data for this axis is being loaded.
Equipment Requirements
planting
Standard farm tractor — rye is grown alongside other crops on most farms and uses the existing tractor fleet. Sized to pull a 15-20 ft drill or 30 ft air seeder.
No-till grain drill (Great Plains, John Deere 1590, Brillion) for both grain and cover-crop seedings. 7.5-inch row spacing standard. Air seeders (40+ ft) used at larger acreages.
For overseeding into standing soybeans or corn, growers either rent custom aerial application ($14-18/acre) or use a high-clearance broadcast spreader. Establishment is less reliable than drilling.
For growers producing certified rye seed — gravity table, indented cylinder, and screen cleaner remove off-types and weeds. Optional for grain or cover-crop end-uses.
spraying
Required for spring termination of cover-crop rye (glyphosate, paraquat, or roller-crimper integration). Also used for any herbicide or fungicide passes if rye is grown for grain.
cultivation
Mechanical termination tool that crimps rye stems at boot-to-flowering for organic or low-herbicide systems. Creates a thick mulch mat for following row crop. Front-mounted models pair with planter for one-pass operations.
Backup termination tool for small rye plantings or mowing seed plot edges. Less effective than spray or roller-crimper for kill but useful in mixed cover-crop stands.
harvesting
Required only when rye is grown for grain or cover-crop seed. Existing combine with small-grain head and slow cylinder speed (light grain damage critical). Used or shared combines very common.
post_harvest
Required only for grain rye — small farm bin with aeration. Ergot-contaminated grain must be cleaned before storage. Many cover-crop seed buyers receive direct from harvest, eliminating storage need.
general
Decision tools (Midwest Cover Crops Council Selector Tool, NRCS Cover Crop Economics calculator) and field-records software help right-size seeding rates and termination timing.
Finance Fit
Scoring data for this axis is being loaded.
Economics Breakdown
| Avg Price/Unit | $6/$/bu |
| Gross Revenue/Acre | $194 |
| Annual Operating Cost | $170/acre |
| Establishment Cost | $50/acre |
| Total Input Cost | $220/acre |
| Net Return/Acre | -$26 |
| Revenue/Labor Hour | — |
| Crop Insurance | Available |
| Subsidies | ARC-CO, PLC |
Source: USDA NASS Crop Values 2025 Summary (Feb 2026): PA 2025 preliminary $5.55/bu @ 35 bu/ac (PA state-level rye is reported; OH/NY/MI rye not separately reported, so PA serves as Lake Erie basin proxy). 3yr trend declining: PA 2023=$6.45 -> 2024=$6.20 -> 2025=$5.55. Cost structure from regional extension small-grains enterprise budgets. (2025)
Risk Fit
Scoring data for this axis is being loaded.
Known Risks
disease
Fungal disease producing toxic black sclerotia in heads of cereal rye and other small grains. Ergot alkaloids are highly toxic to livestock and humans and trigger automatic grain rejection at elevators. Cool, wet weather during flowering favors infection.
Fungal disease infecting florets during flowering, producing shriveled "tombstone" kernels and DON (vomitoxin) mycotoxin. Less severe in rye than wheat or barley, but still a major concern when used for grain or food markets.
Fungal rust diseases reduce photosynthesis and grain fill. Cereal rye is generally less susceptible than wheat, but late-season epidemics in warm humid weather can damage seed yield.
pest
Larvae feed on stems below the ground line in fall and spring, reducing tillering and causing stem breakage near harvest. Less damaging in rye than in wheat; cereal rye tolerates infestation reasonably well.
Bird cherry-oat and English grain aphids vector barley yellow dwarf virus, which stunts plants and yellows leaves. Most damaging when aphids colonize fall stands during warm autumns.
weather
Rye residue releases allelochemicals (BOA, DIBOA) that suppress small-seeded cash crops, especially soybeans and corn planted into heavy mats of fresh-killed rye. Stand losses of 10-20% are documented when termination-to-planting interval is too short.
Rye terminated late (after heading) can transpire 4-6 inches of soil moisture. In dry springs this leaves the following cash crop short of water during critical establishment, reducing yield.
Cereal rye is the most cold-tolerant cereal grain, but in southern growing regions winter dormancy can be incomplete and stand quality variable. In far northern zones, snow cover protects the crop and survival is reliable.
market
Cash markets for cereal rye grain are limited compared to corn or wheat — primarily food rye (whole grain, distilling), forage seed, and cover-crop seed. Buyers are concentrated and basis can be wide.
When grown for cover-crop seed, buyers require certified weed-free, high-germination seed. Volunteer wheat, ryegrass, or weed contamination disqualifies entire lots.
Nutritional Yield
Nutrition data pending.
Research agents will profile Cereal Rye against USDA FoodData Central on the next maintenance pass. Per-acre nutritional yield will appear here once the per-100g panel is recorded.
Ecosystem Services
Ecosystem service data pending.
The next research-agent rotation will document this crop's contributions to pollinator support, soil health, water quality, biodiversity, and carbon sequestration.
Nearby Buyers
Data Sources
Every data point on this page is traceable to its source. Below you'll find the complete provenance trail — which sources were used, when data was last verified, and a full change history.
Primary sources: USDA PLANTS (SECE); SARE — Managing Cover Crops Profitably (3rd ed), Cereal Rye chapter; Penn State Extension agronomy; USDA NRCS Cereal Rye Cover Crop Fact Sheet (2024); University of Illinois Extension cover crop materials. Image to be sourced and verified by the image-audit task.
Economics data year: 2025 · Region: lake_erie View economics source →
25 tracked changes across 5 data categories