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Blue Eryngo in the GardenTags plant encyclopedia

Eryngium planum

 

Blue 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.

Contributed by @richard.spicer.7906

 
plant Features
  • Blue Eryngo likes full sun

    Full sun

  • Blue Eryngo likes very little water

    Very little water

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

    Frost Hardy: 23F (-5°C)

  • Blue Eryngo likes moist and free draining

    Moist and free draining

 
plant information

Common name

Blue Eryngo

Latin name

Eryngium planum

type

Perennial

family

Apiaceae

ph

5.0 - 7.0 Acid - Neutral

  • Light

    Blue Eryngo likes full sun

    Full sun

  • Frost

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

    Frost Hardy: 23F (-5°C)

  • Soil

    Blue Eryngo likes moist and free draining

    Moist and free draining

  • Water

    Blue 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 Blue Eryngo is 0.50meters x 0.50meters 0.50 M 0.50 M

Eryngium planum

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.


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

 
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