How to Grow Kidney Vetch

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Kidney Vetch

Anthyllis vulneraria subsp. vulgaris

herb

Kidney vetch is a low-growing, hardy legume with distinctive clustered flower heads in shades of yellow, orange, red, or pink. It is a nitrogen-fixing wildflower native to Europe that attracts pollinators and beneficial insects. This plant has been traditionally used in herbal medicine and is valued in ecological gardening for supporting biodiversity.

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Example Kidney Vetch timeline · Pittsburgh, PA (Zone 6b)

Plant Kidney Vetch
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Kidney Vetch
Around Jun 16

≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Kidney Vetch dates for your own zip code.

Growing Conditions

☀️

Sun: Full sun, 6-8 hours daily; tolerates partial shade

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Water: Low to moderate water needs; drought-tolerant once established. Water during establishment and prolonged dry spells; prefers drier conditions and does not tolerate waterlogged soil.

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Spacing: 12 inches

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Days to maturity: 60-90 days from seed to first flowering

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Planting depth: 0.25

Soil

Type: Well-draining sandy, loamy, or gravelly soil; tolerates poor and infertile soils

pH: 6.0-7.5

Amendments:

Minimal amendments needed Avoid excessive nitrogen Sand or gravel for poor drainage areas

Growing Zones

Find your zone →

Thrives in zones 3-9; tolerates poor soils and dry conditions

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

Seedling

2-3 weeks

Small rosettes with narrow, pinnate leaves emerge from soil; cotyledons visible initially

Keep soil lightly moist but not wet. Thin seedlings to proper spacing. Protect from heavy rain.

Vegetative

3-5 weeks

Plant develops bushy, compact growth with increasingly feathery, compound leaves; forms low basal rosette

Minimal watering needed. Ensure good drainage. Avoid overfeeding with nitrogen.

Budding & Flowering

6-12 weeks

Dense, round flower heads form at stem tips in yellow, orange, red, pink, or bi-colored clusters; flowers appear in whorled arrangement

Deadhead spent flowers to encourage continued blooming. Water during extreme drought. Monitor for pests.

Seed Production

3-4 weeks

Flowers fade and elongate into small seed pods within the cluster; seeds develop inside legume-like pods

Allow some flowers to remain for seed production. Seeds mature in pods; allow to dry on plant.

Senescence

Variable, extends into dormant season

Plant gradually declines after seed set; foliage yellows and dries. Acts as biennial or short-lived perennial depending on conditions.

Allow self-seeding by leaving mature seed heads. Cut back in autumn or spring as needed.

Companion Planting

Plan your garden →

Plant with:

Bird's-foot Trefoil Salvia Thyme Lavender Catmint Marjoram Yarrow Calendula

Avoid planting near:

High-nitrogen fertilizer-dependent plants Plants requiring consistent moisture

Common Pests

Ensure good air circulation; remove affected foliage; avoid overhead watering
Hand-pick if severe; encourage natural predators; spray with neem oil if needed
Spray with water stream; use insecticidal soap; encourage beneficial insects like ladybugs

Uses

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Wound Healing & Herbal Tea

Medicinal

Kidney vetch has been traditionally used in European herbal medicine to support skin health and minor wound healing. The dried aerial parts are steeped into tea or used in herbal preparations. [source]

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Pollinator Support

Wildlife

A valuable nectar source for bees, butterflies, and other pollinators. Its clustered flowers provide abundant pollen and nectar throughout the growing season. [source]

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Nitrogen Fixation & Soil Improvement

Household

As a legume, kidney vetch fixes atmospheric nitrogen through symbiotic bacteria, enriching soil naturally without synthetic fertilizers. Excellent for ecological gardening and restoration. [source]

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Dried Flower Arrangements

Craft

The colorful, clustered flower heads dry well and retain color, making them suitable for dried arrangements, wreaths, and botanical crafts. [source]

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Herbal Infusions

Culinary

Dried flowers and leaves can be brewed into a mild herbal tea with traditional folk uses for general wellness. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest flowers for medicinal tea or drying when fully open, typically in mid to late summer. For seed collection, allow flower heads to dry on plant until brown and papery, then collect and store in cool, dry conditions. Cut stems for arrangements before flowers fully fade.

Fun Facts

🌱 Kidney vetch gets its common name from the kidney-shaped seed pods that develop within the flower head, resembling the bean-like legumes of the pea family.
🌱 It has been used in European traditional medicine for centuries, with historical texts referencing its use for supporting skin health—the scientific name 'vulneraria' derives from the Latin word for 'wound.'
🌱 Kidney vetch is a keystone plant for the Common Blue butterfly (Polyommatus icarus), which lays its eggs exclusively on Anthyllis species in many parts of Europe.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Biennial Deadhead Full Sun Partial Shade Perennial

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