Eryngium giganteum 'Silver Ghost'
giant sea holly
- 3 × 9cm pots
- available to order from spring
- 9cm pot
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 and 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.