Eryngium 'Magical Silver'
Eryngium 'Magical Silver'
Eryngium 'Magical Silver'
Eryngium 'Magical Silver'
Eryngium 'Magical Silver'

Eryngium 'Magical Silver'

"Sea holly"

Eryngium 'Magical Silver'

1 bare root — £7.90

Spring planting season is currently closed 
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Delivery schedule

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

Available for (pre)ordering again in December
Free delivery on UK orders over £50
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UK orders under £50
£4.99

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£5.99

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Description

Let your summer sparkle with this gleaming highlight, Eryngium 'Magical Silver'! With frosty-looking cool green blooms, this sea holly will provide lasting interest through the season. Not only is it a great-looking and easy-going garden plant, but bees and butterflies will be keen on its nectar-rich flowers too. Strong, upright stems are self supporting and the display is prolific and enduring—as if that wasn’t enough, snip a few stems and you’ll find they’re amazing cutflowers too! 

Eryngium 'Magical Silver' remains strong and attractive for an impressive amount of time. The foliage is a soft sage grey-green, the blooms, from July to September, are similar hue but with a lustrous, icy glaze. When the colour fades in autumn, the plant stems and seedheads of Eryngium planum 'Magical Silver' remain a structural feature in a border. This fully hardy, drought tolerant perennial isn’t fussy, but does best in free-draining poor or sandy soils. If you have a gravel area or a sun-baked border, include this starry number and enjoy its undemanding charm.

With their powerful and bold appearance, eryngiums or sea hollies are known to symbolize independence and attraction.

Key features

  • Good for cutting

  • Comes back every year

  • Fragrant

  • Loved by pollinators

  • Thrives well in full sun

  • In peat-free compost

  • RHS Award (AGM)

  • Drought tolerant

  • Fully hardy

  • Rodent resistant

Specs & details

  • Botanical name

    Eryngium planum 'Magical Silver'

  • Flower colour

    Green, cream

  • Plant size

    1

  • Established height

    50-70cm

  • Established spread

    20-30cm

  • Plant spacing

    9 plants per m2

  • Leaf colour

    Green, blue

  • Habit

    Upright
    Clump-forming

  • Life cycle

    Perennial

  • Hardiness

    Fully hardy

  • Years to establish

    1-2 years

  • Sunlight

    Full sun

  • Position

    Sheltered
    Exposed

  • Suitable for

    Borders
    Coastal gardens
    Cottage gardens
    Cut flower gardens
    Pots
    Large containers

  • Soil acidity

    Any

  • Soil moisture

    Free draining
    Dry

  • Soil type

    Loam
    Sandy
    Clay
    Multipurpose compost
    Loam-based compost

  • RHS Award (AGM)

    Yes

  • Growing skill

    Easy to grow

  • Scented

    Yes

  • Pollinator-friendly

    Yes

  • Mouse resistant

    Yes

  • Rabbit resistant

    Yes

  • Deer resistant

    Yes

  • Toxicity

    No report

Plant calendar

JanFebMarAprMayJuneJulyAugSepOctNovDec
  • Planting
  • Flowering

Useful information

    • Soak the Eryngium 'Magical Silver' 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.

    Read all planting & care instructions

  • 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

Perennials in 1 minute

The beauty of perennial plants doesn’t just lie in their long-lasting flowers and sturdy, resilient nature, but it’s their sheer determination to keep on coming back stronger every year —in year one they’re good, but in future years they’re even better!

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