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Eryngium × olivierianum Big Blue ('Myersblue') (PBR)

sea holly

Eventual height & spread

Eryngium × olivierianum Big Blue ('Myersblue') (PBR)

sea holly

  • RHS Award of Garden Merit
  • 9cm pot
  • £13.99
  • In stock (delivery within 3-4 working days)
  • 3 × 9cm pots
  • £27.99 £9.33 each
  • In stock (delivery within 3-4 working days)
Delivery options
  • Standard £5.99
  • Named Day £10.99
  • Position: full sun
  • Soil: dry, well-drained, poor to moderately fertile
  • Rate of growth: average
  • Flowering period: July to August
  • Hardiness: fully hardy


An upright, herbaceous perennial with spiky, highly divided, silvery-green foliage from which flowering cones emerge encircled by a ruff of long and prickly, intense-blue bracts.

Eryngium × zabelii ‘Big Blue’ lives up to its name and would make a bold addition to dry, sunny borders and gravel gardens where the ‘everlasting’ blooms will attract masses of bees.


  • Garden care:
    Eryngium thrives in poor to moderately fertile, well-drained soil, ideally in full sun, while avoiding areas prone to wet winter conditions.

    To enhance winter interest in your garden, resist cutting back the striking flower heads in autumn; instead, leave them to add structure through the colder months.

    In spring, trim back the old stems to make way for fresh growth from the emerging foliage, ensuring the plant remains healthy and vigorous for the new season.
  • Goes well with