Eryngium alpinum 'Superbum'

Sea holly

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Key information

Plant type

Hardy perennial

Flower colour






Skill level


photo by Tim Gainey, copyright GAP Photos (260151)

Plant details

A good choice for a sunny spot in well-drained soil, this dramatic perennial blooms from June to July. Its feathery bracts have three tiers, producing a beautiful misty effect. To dry for indoor arrangements, cut before the flowers are fully open. Plants enjoy a sunny position in well-drained, dry soil. Protect plants from winter wet. To propagate either take root cuttings in late winter or sow seeds as soon as they are ripe.

Family: Apiaceae

Genus: Eryngium

Species: alpinum

Cultivar: Superbum

Plant type: Hardy perennial

Flower colour: Blue

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Dry, Sandy

Hardiness: Hardy

Skill level: Beginner

Height: 50cm

Spread: 30cm

Time to divide plants: March to April

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