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Sea Holly Jade Frost in the GardenTags plant encyclopedia

Eryngium planum 'Jade Frost'

 

Sea Holly 'Jade Frost'

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. 'Jade Frost' produces prickly flowers which can be used fresh cut or dried. This variety has grey-green leaves edged in creamy white that develops pink tones in cooler temperatures.

Contributed by @Rosalynn

 
plant Features
  • Sea Holly Jade Frost likes full sun

    Full sun

  • Sea Holly Jade Frost likes very little water

    Very little water

  • Sea Holly Jade Frost is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Sea Holly Jade Frost likes moist and free draining

    Moist and free draining

 
plant information

Common name

Sea Holly 'Jade Frost'

Latin name

Eryngium planum 'Jade Frost'

type

Perennial

family

Apiaceae

ph

5.0 - 7.0 Acid - Neutral

  • Light

    Sea Holly Jade Frost likes full sun

    Full sun

  • Frost

    Sea Holly Jade Frost is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Soil

    Sea Holly Jade Frost likes moist and free draining

    Moist and free draining

  • Water

    Sea Holly Jade Frost 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 Sea Holly Jade Frost is 0.60meters x 0.60meters 0.60 M 0.60 M

Eryngium planum 'Jade Frost'

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. 'Jade Frost' produces prickly flowers which can be used fresh cut or dried. This variety has grey-green leaves edged in creamy white that develops pink tones in cooler temperatures.


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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