Drumstick Onion

Allium sphaerocephalon

Plant Details:

Plant Type: Perennial
Plant Family: Amaryllidaceae
Plant Description: Ornamental bulbous perennial onion. Long linear basal leaves form untidy clumps. Forms tightly packed umbels of up to 40 pink to purple bell-shaped flowers in the summer. Plant in clumps 3 inches apart. Low water use and low maintenance. Good choice for full sun borders.

Maintenance:

Maintenance Type: Perennial - Herbaceous
Plant Care: Perennial - Herbaceous (soft-stemmed plants that die back in winter and regrow in spring): Remove spent blooms to promote rebloom later. Some plants tend to flop over after the first bloom and attempt to regrow from the base; in these cases, the old stems can be cut away in summer. As plants become dormant in the fall, remove dead leaves and stems.

Plant Attributes:

Mature Size: 20-36" tall x 12" wide
Utah Native: No
Plant Select: No
Pollinator Friendly: Yes
Localscapes: Infill Plant
Foliage Interest: No
Foliage Colors: Green
Bloom Colors: Purple
Bloom Seasons: Summer
Bloom Period: Jun - Jul

Growing Conditions:

Hardiness Zone: 4 to 10
Light Requirement: Full Sun (6+ hrs sun)
Irrigation Requirement:     Low (1/2" every 10-14 days)
Salt Tolerant: Unknown
Deer Resistant: Unknown

Garden Location:

  • Commercial Concepts
    • JVWCD Building West
  • Planting Path
    • Nursery Shopping
  • Spring
  • Summer
  • Fall
  • Winter