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    ERYNGIUM planum
    © Burncoose Nurseries, all pictures for illustrative purposes only.
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    ERYNGIUM planum ERYNGIUM planum ERYNGIUM planum ERYNGIUM planum BAPTISIA australis, ERYNGIUM planum and PHLOMIS russeliana © Burncoose Nurseries, all pictures for illustrative purposes only. ECHINACEA purpurea, ERYNGIUM planum and SALVIA nemorosa 'Caradonna' © Burncoose Nurseries, all pictures for illustrative purposes only. ERYNGIUM and PEROVSKIA atriplicifolia 'Blue Spire' © Burncoose Nurseries, all pictures for illustrative purposes only. ERYNGIUM planum and STIPA tenuissima © Burncoose Nurseries, all pictures for illustrative purposes only.
    >

    ERYNGIUM planum

    Commonly known as Blue sea holly, Eryngo

    Clump-forming with light blue flowers and blue green bracts. A useful cut flower with 3 foot stems
     
    Full Plant Details - Sun/Soil & other attributes - Click to close
    • Flowering
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      Jan
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      Feb
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      Mar
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      Apr
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      May
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      Jun
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      Jul
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      Aug
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      Sep
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      Oct
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      Nov
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      Dec
    • Good to know
      Wildlife plant - nectar and pollen for insects.
    • Pests & Diseases
      root rot, slugs, snails, powdery mildew.
    • Place of origin
      Southeastern Europe to central Asia.
    • Evergreen
      Oblong, toothed, dark-green basal leaves 5-10cm (2-4in) long with heart-shaped bases.
    • Blue
    • Border
      Suits a mixed or herbaceous border
    • Fully hardy
    • Height
      90cm (3ft)
    • Spread
      45cm (18in)
    • Herbaceous
      Early in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.
      Clump forming perennial. Cones of flowers 1-2cm (¾in) with spiky bracts to 2.5cm (1in) long.
    • Hardy - average winter
      Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F)
    • Autumn Seasonal Interest
    • Spring Seasonal Interest
    • Summer Seasonal Interest
    • Winter Seasonal Interest
    • Well drained, dry, poor to moderately fertile soil
    • Full sun
      Protect from winter wet.
    • Bee friendly
    • Butterfly friendly
    • Rabbit Resistant
    • Mature Size
      90cm (3ft)
      		 Herbaceous - guide for size not form Watering Can
        45cm (18in)
      		  
    View Planting Tips and Care Advice
    Eryngium - Growing Guide
    Herbaceous Plants - Video Collection
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    Available from £13.50
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    Sea holly
    Available from £13.50
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    CYNARA cardunculus

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    Cardoon
    Available from £14.50
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    ERYNGIUM variifolium

    ERYNGIUM variifolium

    Variable-leaved sea holly
    Available from £13.50
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    View Planting Combinations

    Varieties
    ERYNGIUM planum 'Jade Frost'
    Grey-green leaves edged creamy-white and developing pink tones. The foliage contrasts effectively with rich violet-blue flower clusters
     
    1.5 to 2 Litre
    £13.50
    Notify me
    Available late spring to early summer 2025
    Spring according to the Met Office is defined as March 1st - May 31st. Therefore late spring is mid-April onwards. This is not a guaranteed date but an estimate and subject to availability.
    Notify me when this plant is available to order

    Useful extras...

    Vermin & Pest Control
    Slug Pellets
    Slug killer blue mini pellets are easy to use and give effective control of slugs and snails. Ideal in garden, conservatory or greenhouse.
    800g
    £6.50
    Fertilisers & Feeds - Empathy
    Rootgrow mycorrhizal fungi
    Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
    Small - 60g sachet
    £3.00
    Medium - 150gm sachet
    £6.00
    Large - 360gram sachet
    £12.00
    Unavailable
    Fertilisers & Feeds - Empathy
    Rootgrow Ericoid mycorrhizal fungi
    This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries. It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
    200g sachet
    £8.50
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