Blue Dwarf Sea Holly

Eryngium planum 'Blauer Zwerg'

Plant Details:

Plant Type: Perennial
Plant Family: Apiaceae
Plant Description: Clump-forming, herbaceous perennial with tall clusters of unique, spiky blue flowers. Leathery, blue-green, spiny leaves grow from basal rosettes and also on upright-growing stems. Plant in well-drained soils. Prefers moderately fertile to poor soils. Protect from excessive winter moisture.

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" tall x 18" wide
Utah Native: No
Plant Select: No
Pollinator Friendly: Yes
Localscapes: Infill Plant
Foliage Interest: No
Foliage Colors: Blue-green, Green
Bloom Colors: Blue
Bloom Seasons: Summer
Bloom Period: Jun - Aug

Growing Conditions:

Hardiness Zone: 5 to 9
Light Requirement: Full Sun (6+ hrs sun)
Irrigation Requirement:     Low (1/2" every 10-14 days)
Salt Tolerant: Unknown
Deer Resistant: Yes

Garden Location:

  • Commercial Concepts
    • JVWCD Building
  • Spring
  • Summer
  • Fall
  • Winter