Black Vetch

(Vicia nigricans)

Black Vetch (Vicia nigricans)

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Estimated Native Range
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Summary

Vicia nigricans, commonly known as Black Vetch, is a deciduous perennial herb native to open woodlands, grasslands, and scrub areas in the Western United States to South America. It can grow to a height of 2-6 feet and a width of 1-2 feet. The plant features tendrils that allow it to climb and support itself on other vegetation. Black Vetch produces small, pea-like flowers that are most commonly purple to violet, blooming in the spring and summer months. The flowers are modest in size but can be quite showy when in large numbers.

Black Vetch is valued for its nitrogen-fixing abilities, which can improve soil fertility, making it useful for restoration projects and as a cover crop in agricultural settings. It is also used in wildflower mixes for naturalized areas. This species prefers full sun but can tolerate partial shade and is adaptable to a range of soil types, provided they are well-drained. While it requires medium amounts of water, it is relatively drought-tolerant once established. Black Vetch can be susceptible to fungal diseases, especially in humid conditions. It is also important to note that, when grown outside its native range, it has the potential to become invasive, so gardeners should monitor its spread.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 2-6 feet
  • Width: 1-2 feet
  • Growth Rate: Moderate
  • Flower Color: Yellow, White, Orange, Red, Purple
  • Flowering Season: Spring, Summer
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Medium
  • Drainage: Slow, Medium, Fast

Common Uses

Bee Garden, Butterfly Garden, Low Maintenance

Natural Habitat

native to open woodlands, grasslands, and scrub areas in the Western United States to South America

Other Names

Common Names: Giant Vetch

Scientific Names: , Vicia nigricans, Ervum nigricans, Vicia nigricans subsp. nigricans,

GBIF Accepted Name: Vicia nigricans Hook. & Arn.