Eryngium 'Blue Star'
"Sea holly"
Orders placed until 29 February 2025
You can expect your order in February/March 2025
Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025
Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
UK orders over £50
Free shipping
UK orders under £50
£4.99
Northern Ireland orders under £50
£5.99
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Description
Introduce easy, long-lasting colour and structure to your planting scheme with super-low maintenance Eryngium 'Blue Star'. That snowflake-like lacy collar of metallic-looking bracts on rigid, upright stems will bring so much to your planting scheme. From the moment these flowerheads emerge in an intense shade of lavender-blue in summer, and continuing into autumn and winter after the colour has faded to silver-grey. Sea holly is an incredible plant, it’s so resilient—drought tolerant, fully winter hardy and strong enough to withstand the gustiest weather. Favouring stony or sandy soils, Eryngium 'Blue Star' is a go-to perennial for coastal areas, but gardeners inland will also find it thrives in any free draining spot!
Eryngium alpinum 'Blue Star' is immensely free-flowering—no surprise as it was bred for the cut flower industry. Despite its cut-flower credentials, you’ll find this easy-going perennial is a great garden plant, undemanding in sun or semi-shade, even tolerating poor, thin soils where other plants refuse to grow. Bees and butterflies will love Eryngium 'Blue Star' too, exploring the drifts of nectar-rich blooms from July to October, long after other perennials have faded.
Eryngium received its name from a thistle plant (Eryngium campestre) used by the father of botany, Theophrastus, in ancient Greece.
Key features
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Good for cutting
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Comes back every year
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Fragrant
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Loved by pollinators
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Thrives well in full sun
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In peat-free compost
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RHS Award (AGM)
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Drought tolerant
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Fully hardy
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Rodent resistant
Specs & details
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Botanical name
Eryngium planum 'Victory Blue'
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Flower colour
Blue
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Plant size
1
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Established height
50-70cm
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Established spread
20-30cm
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Plant spacing
9 plants per m2
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Leaf colour
Green, blue
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Habit
Upright
Clump-forming -
Life cycle
Perennial
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Hardiness
Fully hardy
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Years to establish
1-2 years
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Sunlight
Full sun
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Position
Sheltered
Exposed -
Suitable for
Borders
Coastal gardens
Cottage gardens
Cut flower gardens
Pots
Large containers -
Soil acidity
Any
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Soil moisture
Free draining
Dry -
Soil type
Loam
Sandy
Clay
Multipurpose compost
Loam-based compost -
RHS Award (AGM)
Yes
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Growing skill
Easy to grow
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Scented
Yes
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Pollinator-friendly
Yes
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Mouse resistant
Yes
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Rabbit resistant
Yes
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Deer resistant
Yes
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Toxicity
No report
Plant calendar
| Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
- Planting
- Flowering
Useful information
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Soak the Eryngium 'Blue Star' roots in water for 3-6 hours prior to planting
Plant your "Sea holly" bare roots into temporary pots with a multipurpose compost in spring and grow-on in a sheltered spot outdoors
Choose a pot which comfortably fits the bare roots. Some have a noticeable crown which should be just below the soil surface with any top growth exposed. Some varieties are a length of root which should be planted lengthways and shallowly (1-2cm deep).
Plant out into borders or permanent containers in late spring or early summer once in full growth. Choose a position in sun or shade depending on the variety.
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Orders placed until 29 February 2025
You can expect your order in February/March 2025Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
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