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Eryngium 'Blue Steel'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.
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.
FROM £9.99
Ideal for hot, dry conditions and coastal locations
Produces dramatic cones of tiny blue flowers that are surrounded by a spiky, electric-blue collar
Loved by pollinating insects, Eryngium makes a useful addition to a wildlife garden, or for filling gaps in cottage garden borders
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Height Up to 90cm (36in)
Spread Up to 45cm (18in)
Hardy Perennial
cottage gardenswildlife gardenscut flower gardencoastal garden
full sun
JAN
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Flowering Months Planting Months
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Description
How to Grow
Reviews
Video
Sea Holly is a useful perennial for its ability to cope with hot, dry conditions and coastal locations. Eryngium ‘Blue Steel’ produces dramatic cones of tiny blue flowers that are surrounded by a spiky, electric-blue collar. The tall flower stems bring fabulous texture to sunny borders, and are prized by flower arrangers for adding to summer bouquets, either fresh or as a dried flower. Loved by pollinating insects, Eryngium makes a useful addition to a wildlife garden, or for filling gaps in cottage garden borders. Height: 90cm (36"). Spread: 45cm (18").
Show Codes
10 Bare Root Plants (KC2085)
5 Bare Root Plants (16617)
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 Feed and 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. In cold wet soils, use a cloche to protect the crown of the plant from winter rainfall. Lift and divide overcrowded clumps of eryngium in spring. 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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