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    • Photo of Eryngium maritimum flower, foliage by Julio Reis

    Photo by Julio Reis

    This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license.

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    Eryngium maritimum

    Also Known As

    • Sea Holly

    Plant type

    perennial

    size

    • H: 24"-36"
    • W: 24"-36"

    planting zones

    • 5a-10b

    More Options

    Eryngium maritimum plant details

    Eryngium maritimum is a broadleaf semi-evergreen perennial with blue foliage. In summer blue flowers emerge. Features glaucous texture. Attracts bees and beneficial insects making it an excellent addition to pollinator gardens. Grows well with sun and occasional water. Does well in gritty, rich and well-drained soil. A good option if you're seeking something heat tolerant.

    CHARACTERISTICS OF Eryngium maritimum

    Plant type: perennial
    Plant family: apiaceae
    Foliage: semi-evergreen blue
    Mature size: 24 IN - 36 IN - wide, 24 IN - 36 IN - tall
    Flowers: blue blooms in summer
    Uses: border plant, rock garden, spiky

    GROWING CONDITIONS for Eryngium maritimum

    USDA Zones: 5a - 10b
    Sun exposure: sun
    Watering frequency: occasional
    Resistant to: heat
    Soil needs: gritty, rich and well-drained

    Nursery contributed plant descriptions

    The prototype sea holly, a costal plant with attractive glaucous blue stiff and spiny foliage and ghostly white giganteum like bracts. It is one of the most beautiful in the genus but notoriously finicky when it comes to germinating in numbers. ZONE 4

    By: Arrowhead Alpines

    Gardening facts about Eryngium maritimum plant

    How to Grow Eryngium maritimum

    • Sun Exposure

      • sun

    • Water Needs

      • occasional

    • Soil Needs

      • well-drained
      • rich
      • gritty

    • Special Situation

      • heat tolerant

    Features

    • Foliage Color

      • blue

    • Flower Color

      • blue

    • Wildlife

      • beneficial insects
      • bees

    • Flower Season

      • summer

    • Foliage Season

      • semi-evergreen

    • Texture

      • glaucous

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