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.

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Eryngium 'Blue Sea Holly'

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

Eryngiums love poor soils in hot dry conditions. Plant in full sun for maximum flower colour. Protect from frost. Cut back to the ground in late winter to encourage fresh new growth in spring and abundant flowering in early summer. Drought tolerant. Avoid transplanting. Tolerant of the toughest conditions, including coastal sites and poor soils. Good drainage is essential, especially in winter. Stake if necessary in fertile soils, and plant in multiples or among other perennials for support.

Growing Information

Growing Needs
Light: Full Sun
Water: Drought tolerant
Heat Zone: 1-10

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Cold Zone: 7-10
Plant Characteristics
Type: Herbaceous/Semi-Deciduous

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Height: 90cm
Width: 45cm
Flower colour: Blue
Flowering: Jan-Apr
Pot Size:
Pot Size: Midi Pot

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Delivery timeframe

Please note that we are currently despatching orders for all in-stock items within 5 - 7 business days.

Orders to WA, NT and TAS require quarantine clearance. These orders are shipped weekly which may impact delivery timeframes. Please allow an additional week to receive your package.

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15+ plants: $21.95

seeds can be added for no additional charge

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seeds can be added for no additional charge

Plants with any other combination of hardware, books, bulbs or tubers:
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15+ plants: $32.90

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Pre-orders

Items available for pre-order will be despatched as soon as the season permits, as indicated by the expected delivery date.