Tapertip Onion

(Allium acuminatum)

Tapertip Onion (Allium acuminatum)

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Estimated Native Range
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Summary

Allium acuminatum, commonly known as the tapertip onion or Hooker’s onion, is a perennial herb native to dry meadows, open woodlands, and grassy slopes in the Western United States and Canada, including British Columbia. It thrives in these sunny, well-drained habitats, often among brush and pines. The plant typically grows to a height of 8 to 16 inches (20 to 40 centimeters) and is characterized by its narrow, conical bulbs that are less than 1 inch across. From late spring to early summer, it produces a scape up to 16 inches tall bearing an umbel of 20 to 40 vibrant pink to purple flowers with contrasting yellow anthers, which are quite showy and attract pollinators. The plant also has two or three grooved leaves that wither before the flowers bloom.

The tapertip onion is valued for its ornamental flowers and is used in rock gardens, native plant gardens, and as a border plant. It is drought-tolerant and requires minimal maintenance once established, making it a suitable choice for xeriscaping. In cultivation, it prefers full sun and well-drained soils, mimicking its native dry meadow conditions. While it is not commonly afflicted by diseases, overwatering can cause bulb rot. The bulbs and flowering stalks are edible, with the stalks having a milder flavor, and have been traditionally harvested by indigenous peoples for culinary use.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb, Bulb
  • Height: 0.3-1 feet
  • Width: 0.1-0.3 feet
  • Growth Rate: Rapid
  • Flower Color: Pink, Purple, White
  • Flowering Season: Spring, Summer
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Water: Low, Medium
  • Drainage: Fast, Medium

Common Uses

Bee Garden, Butterfly Garden, Deer Resistant, Low Maintenance, Rock Garden

Natural Habitat

Native to dry meadows, open woodlands, and grassy slopes

Other Names

Common Names: Taper-tip Onion

Scientific Names: , Allium acuminatum, Allium acuminatum var. cuspidatum, Allium cuspidatum, Allium elwesii, Allium murrayanum, Allium wallerianum, Allium wallichianum,

GBIF Accepted Name: