Eryngium x zabelii 'Big Blue' (Sea Holly)

Eryngium x zabelii 'Big Blue' (Sea Holly) - Image 2

Eryngium x zabelii 'Big Blue' (Sea Holly) - Image 3

Categories: Eryngium, Perennials

Eryngium x zabelii ‘Big Blue’ (Sea Holly)

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Plant information

Plant Description

Eryngium x zabelii Big Blue has attractive grey-green spiky leaves and a spiky thimble-shaped blue flower. Perfect for pots and borders and great for attracting bees to your garden. Although regarded as a perennial, it’s recommended to protect in severe winters. Lift and divide large plants in spring. Makes great cut flowers

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🌿 How to Care for Eryngium x zabelii ‘Big Blue’ (Sea Holly)

How much sun do Eryngium x zabelii ‘Big Blue’ (Sea Holly) need?

Eryngium x zabelii ‘Big Blue’ (Sea Holly) thrives in full sun—around six hours a day. While it can tolerate light shade, you’ll get the best flowering in bright, open spots.

What type of soil is best for Eryngium x zabelii ‘Big Blue’ (Sea Holly)?

Eryngium x zabelii ‘Big Blue’ (Sea Holly) prefers well-drained soil, ideally sandy or chalky. Rich or heavy soils can cause the plant to flop and reduce flower production.

How often should I water Eryngium x zabelii ‘Big Blue’ (Sea Holly)?

Water well during the first growing season to help it establish. Once settled, Eryngium x zabelii ‘Big Blue’ (Sea Holly) is drought-tolerant and rarely needs extra water unless it’s extremely dry.

Do i need to feed Eryngium x zabelii ‘Big Blue’ (Sea Holly)?

Eryngium x zabelii ‘Big Blue’ (Sea Holly) doesn’t require much at all. In fact, too much fertiliser—especially nitrogen—can lead to more leaves and fewer flowers. A light feed in spring is plenty, if needed.

Should I deadhead or cut back Eryngium x zabelii ‘Big Blue’ (Sea Holly)?

Yes—regularly remove faded flowers from Eryngium x zabelii ‘Big Blue’ (Sea Holly) to encourage more blooms and stop self-seeding. You can cut the plant back in autumn or early spring to tidy it up and boost new growth.

When should I divide or propagate Eryngium x zabelii ‘Big Blue’ (Sea Holly)?

Divide Eryngium x zabelii ‘Big Blue’ (Sea Holly) into clumps every 3 to 5 years in spring or autumn to keep them healthy and vigorous. You can also take soft cuttings in spring.

Are Eryngium x zabelii ‘Big Blue’ (Sea Holly) drought-hardy?

Yes, Eryngium x zabelii ‘Big Blue’ (Sea Holly)is drought handy. Once it’s established, it copes brilliantly in dry conditions, making it perfect for sunny borders and gravel gardens.

What pests or diseases affect Eryngium x zabelii ‘Big Blue’ (Sea Holly)?

Eryngium x zabelii ‘Big Blue’ (Sea Holly) is generally low-maintenance, but it can occasionally suffer from aphids or powdery mildew—especially in humid or overcrowded spots. Good airflow and spacing usually prevent problems.

Eryngium x zabelii ‘Big Blue’ (Sea Holly)

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🌿 How to Care for Eryngium x zabelii ‘Big Blue’ (Sea Holly)

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