Hairy Vetch
Vicia villosa
Family Fabaceae
Hairy vetch spends the winter working. Sown in fall, it holds your soil through the cold, then surges in spring with tangled purple-flowered growth that fixes a serious dose of nitrogen and buries weeds — the classic no-till bed under a champion tomato crop, grown instead of bought.
Bees work the spring bloom hard while the roots do their quiet chemistry below, and a rye partner gives the vines a ladder. This is a soil-builder, not a salad — the seeds aren't for eating. Give one tired bed a vetch winter and compare it in spring.
Full Sun
Low water
Fast growth
Attracts bees
None winter chill
From the print shop
Growing hairy vetch? Hang it.
Our Plant Library collection carries hairy vetch — Vicia villosa, print Nº 222, “Hairy Vetch.”
526 designsfrom $12.99white or black backgroundmatte poster, unframed
Will it fruit where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what hairy vetch actually needs.
Life cycleAnnualHairy Vetch · Common problems
Common hairy vetch problems
Pests
1 problem on file
- Almost none
Diseases
1 problem on file
- Almost none
Hairy Vetch · Growing & propagation
Growing hairy vetch
- Light
- Full Sun
- Water
- Low-Moderate
Soil- Any
Nitrogen-fixer · pH 6.0 - 7.0
Fertilizer- None
A heavy nitrogen producer
Pruning- Mow/crimp at flowering, then plant into residue
One of the best overwintering cover crops for nitrogen — sow in fall, it survives winter, then explodes in spring, fixing large amounts of nitrogen and smothering weeds before you crimp it and plant into the mat (a classic no-till system, especially before tomatoes). The purple spring flowers feed bees. Often mixed with cereal rye for structure. Can self-sow — terminate before seed set.
Spacing- Broadcast dense
How to plant & propagate hairy vetch
- Propagate
- From seed
Hairy Vetch · Calculators & field guides
A little help in the garden.
Hairy Vetch · Yearly calendar
The hairy vetch year, month by month
Jan
No calendar activity is listed for this month.
BloomBloomMay
What each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
Hairy Vetch · Ecology & uses
Ecology & uses
Vicia villosa
Hairy Vetch in the garden system
- Groundcover layer annual
- N-fixer
- Nectary/insectary
Attracts- Bees
Moisture- Upland / dry
Deer- Browsed
Protect young plants
Origin- Introduced
What hairy vetch is grown for
! Some parts toxic — see notesSeeds toxic if eaten in quantity — a cover crop, not a food
Use- Overwinter N-fixer
- Use
- No-till mulch
- Use
- Green manure
- Use
- Bee forage
Harvesting & storing hairy vetch
Cover crop — terminate at bloom as green manure.
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
Hairy Vetch · Varieties & cultivars
Choosing a hairy vetch variety
Common hairy vetch; often sold in a rye-vetch mix
Sources & plant identity
Know what you’re growing.
See where the knowledge comes from.
Hairy Vetch
Vicia villosa
The plant, at a glance.
- Botanical name
- Vicia villosa
- Plant family
- Fabaceae
- Growth habit
- Annual
- Origin
- Introduced
- USDA plant symbol
- VIVI
- Invasive risk
- Low
Hardiness, size and timing vary with your cultivar, soil and climate.
Rooted in research.
University extension research, brought together with hands-on growing experience at Story Thyme Farms.
Questions
Hairy Vetch questions, answered straight.
Is hairy vetch safe for kids and pets?
With care. Seeds toxic if eaten in quantity — a cover crop, not a food Site it accordingly if children or pets roam the garden. This is general reference, not medical or veterinary advice — call a vet or poison control if something has actually been eaten.
When do you harvest hairy vetch?
Cover crop — terminate at bloom as green manure.
How do you propagate hairy vetch?
From seed.
Elsewhere
Where hairy vetch sits in the library.
Crimson Clover
White Clover
Phacelia (Lacy Phacelia)
Alfalfa