Eryngium tricuspidatum (Sea Holly)

Type Herbaceous flower, Deciduous, Flowering
Form Upright Taller-Growing Clump, Architectural Form
Size Medium Border Plant (50-180cm height)
Colours Dark blue Flowers (Summer), Silver Foliage
Care Some Maintenance Required - Tough Plant
Hardiness Frost hardy, Drought Tolerant, Seaside Friendly
Growth Medium Growing Plant
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Eryngium tricuspidatum description: This medium sized Erygium requires planting towards the front of a border where is outstanding silver blue finely cut foliage can be fully appreciated. The display of silver blue flower spikes in mid to late summer are an added bonus and are long lasting, being well suited to cutting and drying. Ideal with other sun loving Mediterranean plants and lowish grasses.

Eryngium tricuspidatum cultivation notes: Eryngium's require a sunny sheltered location with reasonably fertile yet never wet soil, being ideal for a dry border in full sun. Cut back to ground in autumn and avoid planting where foliage will be drowned by surrounding plants. Taller flower spikes might need support. Ideal for planting in a dry border with grasses and herbaceous plants

Plant Strengths: Sun loving drought tolerant plant; Spiney growth can deter unwanted visitors! 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; Tolerates full sun and sandy, drought-prone soils.

Plant Weaknesses: Spiney plant - can scratch young children and gardeners!

Design & Plant Use for Eryngium tricuspidatum:
  • Summer flowering herbaceous plant suitable for border planting


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Eryngium tricuspidatum (Sea Holly)
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