Please make sure JavaScript is enabled.
 
Seaside Eryngo in the GardenTags plant encyclopedia

Eryngium maritimum

 

Seaside Eryngo

Sea Holly is a strikingly attractive architectural rosette-forming plant bearing rounded deep blue flowers with a spiky collar of silvery bracts. The leaves are dark green and heart-shaped. The plant has a tap root, and needs moisture-retentive soil that drains well. It is drought-tolerant. Eryngium maritimum, resembles a plume thistle in that its flower is burr-shaped, but the flowers are metallic blue rather than mauve.

Contributed by @igrowhort

 
plant Features
  • Seaside Eryngo likes full sun

    Full sun

  • Seaside Eryngo likes very little water

    Very little water

  • Seaside Eryngo is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Seaside Eryngo likes moist and free draining

    Moist and free draining

 
plant information

Common name

Seaside Eryngo

Latin name

Eryngium maritimum

type

Perennial

family

Apiaceae

ph

5.0 - 7.0 Acid - Neutral

  • Light

    Seaside Eryngo likes full sun

    Full sun

  • Frost

    Seaside Eryngo is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Soil

    Seaside Eryngo likes moist and free draining

    Moist and free draining

  • Water

    Seaside Eryngo likes very little water

    Very little water

Plant & bloom calendar

  •  
    Best time to plant
  •  
    When the plant will bloom

full grown dimensions

The size of a fully grown Seaside Eryngo is 0.50meters x 1.00meters 0.50 M 1.00 M

Eryngium maritimum

Sea Holly is a strikingly attractive architectural rosette-forming plant bearing rounded deep blue flowers with a spiky collar of silvery bracts. The leaves are dark green and heart-shaped. The plant has a tap root, and needs moisture-retentive soil that drains well. It is drought-tolerant. Eryngium maritimum, resembles a plume thistle in that its flower is burr-shaped, but the flowers are metallic blue rather than mauve.


Summer Flowering

From Early Summer TO Mid Autumn

Sea Holly is a strikingly attractive plant bearing rounded deep blue flowers and dark green, heart shaped leaves on upright stems in Summer. Cut hard back in Autumn

 

Planting

From Early Spring TO Mid Spring

Plant eryngiums where there is bright light, poor soil and good drainage in order to develop a strong, rigid framework and steely patina. If grown on damp, heavy soil (or in wetter parts of the country) most eryngiums stems tend to flop and become a dull, grey-green. However, eryngiums are very diverse: there are over 240 species worldwide. If you really want to grow them, try one or two in the driest hot spots you have. Some even do well on clay. Overwintering can be a problem, so choose a warm position and be prepared to protect a choice plant with fleece or straw in severe weather. These jagged plants need their own space to shine. They make a statement in a warm gravel garden planted among sun- lovers. Or use it as a plant sculpture at the forefront of a sunny, open area with bold planting behind

 
Subscribe to GardenTags Premium to get personalised planting tasks and more for your entire plant collection
 
Gardeners who are growing this plant
>