• AGM plants

    AGM plants have been through a rigourous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Eryngium planum 'Bethlehem'

Blue eryngo 'Bethlehem'

Blue eryngo 'Bethlehem'

© � RHS 1999

  • Other common names Blue eryngo 'Bethlehem'

  • Genus Eryngium can be annuals, biennials or perennials with simple or divided leaves, often spiny edged, and cone-like flower-heads often surrounded by an involucre of conspicuous spiny bracts

  • Family Apiaceae / Apiaceae

  • Species 'Bethlehem' is a perennial forming a clump of oblong dark green leaves and branched stems bearing small, slate-blue flower-heads with narrow bracts

Characteristics

  • Foliage Evergreen

  • Habit Clump-forming

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or East-facing or West-facing

  • Exposure Exposed

Soil

  • Chalk

    Sand

  • Chalk

    Loam

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilSand, Loam, Chalk

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    0.5-1 metres

  • Ultimate spread

    0.1-0.5 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grow in dry, well-drained soil that is poor to moderately fertile. Full sun is essential as is protection from winter wet

Propagation Propagate by root cuttings in late winter

Suggested planting locations and garden types Flower borders and beds Cut Flowers Coastal Cottage & Informal Garden Gravel Garden Wildlife Gardens

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