← Back to results
Allium — Allium spp.

Allium

Allium spp.

Amaryllidaceae · Bulb

Alliums, also known as ornamental onions, produce striking spherical flower heads atop tall, slender stems, creating an architectural interest in the garden. They are deer-resistant and attract beneficial pollinators.

  • · Plant bulbs in fall in a sunny location with well-drained soil.
  • · Most varieties are drought-tolerant once established.
  • · Allow foliage to yellow and die back before removing.

At a glance

  • Growing zones: 3-9
  • Sun: Full sun
  • Water: Low
  • Maintenance: Low
  • Type: Bulb
  • Mature size: 1-4 ft tall · 6-12 inches wide
  • Bloom season: Late spring to early summer · Purple, pink, white
  • Pollinator friendly: Yes
  • Container suitable: Yes
  • Cold tolerance: Hardy to -40F
  • Heat tolerance: Excellent
  • Soil: Well-drained, average garden soil
  • Growth rate: Moderate
Buy Seeds · Amazon

Affiliate link — gardens.net earns a commission from qualifying purchases at no extra cost to you.

More bulbs