Eryngium x zabelii 'Big Blue'Sea Holly

Hardy Perennial

What is Hardy Perennial?
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.

FROM £14.99

One of the largest flowered and bluest of all eryngiums

Long season of interest

Drought tolerant and perfect for gravel gardens

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Height Up to 70cm (28in)
Spread Up to 60cm (2ft)

Hardy Perennial

wildlife gardenslow maintenance gardenexotic gardenspecimen plantcoastal gardencut flower garden

full sun

JAN
FEB
MAR
APR
MAY
JUN
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AUG
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DEC
Flowering Months Potting On Months Planting Out Months

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Description

One of the largest flowered and most blue of all eryngiums, Eryngium x zabelii ‘Big Blue’ lives up to its name. Low clumps of grey-green, deeply divided and softly spiny leaves keep a low profile throughout the first part of summer, giving no hint of the drama yet to unfold. Come August, stiffly branching, steely blue stems erupt from the clumps, bursting into thistly flowers. The flowers have a strong architectural design, each one composed of a central cone surrounded by a prominent ruff of slender bracts. Their intense metallic-blue colour is an arresting feature, especially in the low light of the evening when the flower heads appear to shimmer. The dried out flowerheads persist on the plant into the winter months extending the season of interest. They look magical when covered in dew or frost.

Eryngium x zabelii ‘Big Blue’ is drought tolerant once established, thriving in poor, freely draining sites. It makes an excellent subject for a dry and sunny Mediterranean border or gravel garden, where its strong architecture provides a counterpoint to softly mounding perennials. The flowers are adored by bees and butterflies. RHS Award of Garden Merit. Height: 70cm (28in). Spread: 60cm (24in).

Plant height and spread is seasonal therefore we list by pot size rather than a defined plant size. The height and spread of the plant delivered will vary depending on the season, meaning arrival images are an indication only.

Show Codes

1 x 9cm Potted Plant (KH1504)

2 x 9cm Potted Plants (KH1505)

3 x 9cm Potted Plants (KH1506)

How to Grow
Grow sea holly plants on light, well drained soil in full sun. Eryngium plants particularly dislike cold, wet soil in winter which may cause the crown to rot. If planting on heavy soils, dig in plenty of coarse grit to improve drainage prior to planting.
More Info
Water regularly throughout the growing season until plants are fully established. Leave faded eryngium flower heads in place until spring to benefit from the winter interest they will add to your borders. Only lift it when necessary as sea holly can be slow to re-establish.
Delivery

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

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Eryngium x zabelii 'Big Blue'

Eryngium x zabelii 'Big Blue'

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