Hairy Vetch (Raw)

Hairy vetch is a cool season legume that excels in improving soil health, making it a highly valued cover crop. A well-nodulated hairy vetch can significantly boost soil fertility by enriching the soil with nitrogen through natural fixation. Once established, it forms a dense canopy that suppresses weeds, while its taproots improve soil structure. Known for its ability to grow vigorously in low fertility soils, it thrives in a range of soil types and conditions.

• Fixes Nitrogen: Hairy vetch can be highly effective at fixing nitrogen, potentially adding between 60 to 120 lbs per acre, naturally enriching soil fertility for subsequent crops.

• Suppresses Weeds: Once matured, hairy vetch forms a thick, upright canopy that shades out emerging weeds, minimizing competition for water, light, and nutrients.

• Builds Soil: The deep taproots of hairy vetch improve soil structure, enhance water infiltration, and boost organic matter, supporting long-term soil health.

Type: Legume
Season: Cool Season

Seeding & Growth

Precision: 7 lb/A
Drilled: 15 lb/A, 1/2" to 1 1/2" deep
Broadcast: 20 lb/A
Aerial: 24 lb/A

Dates: 30-45 days before avg first frost

Avg seeds/lb: 16,300
Emergence: 14 days
Inoculate: Yes, pea or vetch inoculant
Height: 3'-7'
Inter-seeding: Yes, ask a specialist for details
Drought and Heat: Good drought tolerance, Low heat tolerance
Flooding: Does not tolerate flooding or ponding

Frequently Asked Questions: Hairy Vetch

When should I plant hairy vetch seeds for the best results?

For the best results, plant hairy vetch seeds 30 to 45 days before the average first frost. This gives the crop ample time to establish properly, fix nitrogen, and develop a strong root system that enhances soil structure — providing long-term benefits for the next growing season.

Can a hairy vetch cover crop survive the winter? 

Hairy vetch is a winter-hardy legume known for its excellent nitrogen fixation. Its ability to thrive in various soil types and conditions makes it a reliable cover crop, though it can be difficult to fully eliminate from fields. It’s best suited for high ground to ensure proper field drying.

What are the benefits of hairy vetch as a cover crop?

Hairy vetch can significantly boost soil health by fixing 60 to 120 lbs of nitrogen per acre, enriching soil fertility this way. As it matures, it forms a thick canopy that suppresses weeds, while deep taproots improve soil structure and support long-term vitality for subsequent crops.

Can I buy hairy vetch seed in bulk?

At Sustain Seed + Soil, we offer hairy vetch seed in sizes to suit any scale — from 25 lb bags to 2000 lb totes. Whether you're sowing a small hairy vetch cover crop or managing large-acreage soil health, our seed is ready to support your growing strategy.