Eryngium 'Blue Sea Holly'

Eryngium planum

This beautiful European sea holly forms clumps of heart-shaped leaves, over which a profusion of striking anodised, blue thimbles appear on vibrant silvery-blue stems from summer to autumn. Tolerant of the toughest conditions, `Blue Sea Holly' may require staking or support in rich soils. This spiky, architectural character adds interest to our sunny border with its colourful stems and spiny-toothed leaves surrounding the domed blue cones. It looks wonderful planted amongst agastache and coneflowers. Also a superb cut flower, beloved of florists.

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Eryngium 'Blue Sea Holly'

This beautiful European sea holly forms clumps of heart-shaped leaves, over which a profusion of striking anodised, blue thimbles appear on vibrant silvery-blue stems from summer to autumn. Tolerant of the toughest conditions, `Blue Sea Holly' may require staking or support in rich soils. This spiky, architectural character adds interest to our sunny border with its colourful stems and spiny-toothed leaves surrounding the domed blue cones. It looks wonderful planted amongst agastache and coneflowers. Also a superb cut flower, beloved of florists.

How to grow

Full sun, extremely drought-hardy and tolerant of the toughest conditions, including coastal sites and poor soils. Good drainage is essential, especially in winter. Stake if necessary in fertile soils, plant in multiples or among other perennials for support. Cut back when flowering finishes or leave seed heads to overwinter for sculptural effect.

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