Hairy Vetchling (Vicia hirsuta)

Hairy Vetchling

Vicia hirsuta

Delicate clusters of tiny white flowers nod like scattered stars. Annual herbaceous legume; common names: hairy vetchling, tiny vetch.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates dappled shade in woodland edges; avoid intense midday sun in hot climates
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Watering Keep soil evenly moist but not waterlogged; avoid drying out completely during flowering period
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Temperature Thrives in cool to temperate conditions; tolerates light frost but not extreme heat above 28°C
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Characteristics

  • Leaf: Pinnately compound, with 4–8 pairs of narrow oblong leaflets; terminates in a branched tendril for climbing
  • Flower: Tiny white to pale lilac pea-like flowers, clustered in 2–6 flowered axillary racemes; petals less than 5 mm long
  • Stem: Slender, hairy, trailing or weakly ascending; uses tendrils to cling to surrounding vegetation
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Care Guide

Watering

Keep soil consistently moist; water when top 2 cm of soil feels dry

Fertilization

Minimal fertilization needed due to nitrogen-fixing nodules. Avoid high-nitrogen fertilizers as they can disrupt natural nitrogen fixation

Eggshell powder topdressing:Sprinkle a thin layer of crushed, dried eggshells around the base to boost soil calcium and deter slugs; avoid overapplication to prevent soil alkalinity
Pruning
  • Trim back spent flower stems to prevent unwanted self-seeding in garden beds
  • Remove yellowing foliage to improve airflow and reduce fungal disease risk
  • Cut back entire plant to ground level after flowering to clear beds for subsequent plantings
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains cyanogenic glycosides that can cause vomiting, diarrhea, breathing difficulties, or seizures if ingested

Humans: Mild toxicity; ingestion may cause gastrointestinal upset, headache, or dizziness from cyanide release if consumed in large quantities

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Garden Uses & Culture

Culture: N/A

Usage: Used as a cover crop for soil nitrogen enrichment; occasional wildflower garden addition