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Eryngium giganteum 'Silver Ghost'

giant sea holly

Eventual height & spread

Eryngium giganteum 'Silver Ghost'

giant sea holly

  • available to order from late summer
  • 9cm pot
  • £8.99
  • Unavailable
  • 3 × 9cm pots
  • £26.97 £24.00
Delivery options
  • Standard

This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.

  • Position: full sun
  • Soil: dry, well-drained, poor to moderately fertile soil
  • Rate of growth: average
  • Flowering period: June to August
  • Hardiness: fully hardy biennial

    Teasel-like pale green flowers, which turn to steely-blue as they mature, are surrounded by a ruff of silvery white bracts. This rosette-forming biennial is great for the front or middle of a sunny, well-drained border. The attractive foliage is displayed to best advantage if the plant is mulched with or planted in gravel. This plant is a biennial, but self-seeds freely. It's also ideal for use in dried flower arrangements.

  • Garden care: Lift and divide large colonies in spring. Avoid the temptation to cut back the flowerheads in autumn as they provide interest in the winter garden.