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Eryngium giganteum - 'Silver Ghost' (Sea Holly, Eryngium)

Type Herbaceous flower, Deciduous, Flowering
Form Spiky Foliage / Spiky Upright Form, Architectural Form
Size Medium Border Plant (50-180cm height)
Colours Blue-silver Flowers (Summer), Blue Foliage
Care Regular Maintenance Required - Tough Plant
Hardiness Frost hardy, Drought Tolerant, Seaside Friendly
Growth Medium Growing Plant
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Eryngium giganteum Description

This lower growing Erygium looks good at the front of a border where is outstanding silver foliage can be seen. The display of silvery flower spikes in mid to late summer are an added bonus, and the long lasting flowers can be cut and dried for indoor use. Ideal with other sun loving Mediterranean plants and lowish grasses.


Eryngium giganteum - Cultivation Notes

Eryngium's like it a sunny warm location with fertile yet never wet soil. Ideal for a dryish border in full sun. Cut back to ground in autumn and avoid planting where foliage will be drowned by surrounding plants. Flower spikes might need staking.


Strengths, Weaknesses & Design Usage


Strengths of Eryngium giganteum:

  • Sun loving drought tolerant plant
  • Spiney growth can deter unwanted visitors!
  • Attracts wildlife to feed or nest
  • All round tough plant suitable for problem areas
  • Suitable for container growing
  • Architectural plant – ideal as a ‘stand out’ plant
  • Suitable for exposed coastal planting
  • Attractive form or foliage for all year interest
  • Tolerates full sun and sandy, drought-prone soils

Weaknesses of Eryngium giganteum

  • Spiney plant - can scratch young children and gardeners!

Design & Plant Use for Eryngium giganteum:

  • Summer flowering herbaceous plant suitable for border planting
  • Architectural plant with dramatic foliage suitable for hot dry spot

View all the plants listed in Genus Eryngium

View other herbaceous flowers with blue-silver flowers, or herbaceous flowers with blue foliage


Common Missspellings: Eringium, Eringeum, Eryngeum, Eringeam

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