- Eventual Height: 60cm
- Eventual Spread: 30cm
Giant Sea Holly
Eryngium giganteum Silver Ghost
- Position: full sun
- Soil: dry, well-drained, poor to moderately fertile soil
- Rate of growth: average
- Flowering period: June and August
- Flower colour: steel-blue flowers surrounds by silvery white bracts
- Other features: ideal for use in dried flower arrangements
- Hardiness: fully hardy
Branched, teasel-like pale green flowers turning to steel-blue are surrounded by narrow silvery white bracts in summer. This rosette-forming perennial 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. It is a short lived perennial which self-seeds freely.
- 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.