Amethyst sea holly Eryngium amethystinum

amethyst sea holly


E. amethystinum is a semi-evergreen, clump-forming perennial to around 70cm tall forming a rosette of divided basal leaves. Egg-shaped to rounded, steel blue flowerheads to 2cm long are borne on upright, branching stems often also coloured a deep blue; each flowerhead is surrounded by spreading blue-silver bracts

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      amethyst sea holly amethyst eryngo Italian eryngo see more

  • infoCharacteristics

    • Foliage type


    • Height

      0.5-1 metres

    • Spread

      0.1-0.5 metres

    • Hardiness zones


  • sunLight

    Full Sun

  • scissorsPruning

    Although you can cut back flower stems after flowering the seedheads are a very attractive feature so are usually left over winter

  • bambooSoil

    SoilChalk, Loam, Sand

  • pinSuitable locations

    • Hardiness zone

      Drought Resistant Cut Flowers Flower borders and beds Banks and Slopes City & Courtyard Gardens Coastal Gravel Garden Patio & Container Plants Architectural Cottage & Informal Garden Prairie Planting

  • sproutPropogation

    • Propagate by root cuttings in late winter

  • insectPests

    Can get leaf and bud eelworms

  • microbeDiseases

    May be affected by powdery mildews and root rot