Eryngium x zabelii 'Jos Eijking' syn. Eryngium 'Sapphire Blue'
Sea Holly 'Jos Eijking'
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.'Sapphire Blue' or 'Jos Eijking' is a delightful sea holly has long lasting, flowers that arrive in mid- to late summer, turning bright metallic-blue as they age and usually lasting well into the autumn. They have a strong architectural shape, so are best in uncrowded borders where they can really stand out on their own. Honey bees love their flowers so they are a perfect for adding to a sunny, wildlife-friendly garden. Avoid the temptation to cut back the flowerheads in autumn as they provide interest in the winter garden.
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Full sun
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Very little water
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Frost Hardy: 23F (-5°C)
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Moist and free draining
Common name
Sea Holly 'Jos Eijking'
Latin name
Eryngium x zabelii 'Jos Eijking' syn. Eryngium 'Sapphire Blue'
type
Perennial
family
Apiaceae
ph
5.0 - 7.0 Acid - Neutral
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Light
Full sun
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Frost
Frost Hardy: 23F (-5°C)
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Soil
Moist and free draining
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Water
Very little water
Plant & bloom calendar
-
Best time to plant
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When the plant will bloom
full grown dimensions
0.50 M
1.00 M
Eryngium x zabelii 'Jos Eijking' syn. Eryngium 'Sapphire Blue'
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.'Sapphire Blue' or 'Jos Eijking' is a delightful sea holly has long lasting, flowers that arrive in mid- to late summer, turning bright metallic-blue as they age and usually lasting well into the autumn. They have a strong architectural shape, so are best in uncrowded borders where they can really stand out on their own. Honey bees love their flowers so they are a perfect for adding to a sunny, wildlife-friendly garden. Avoid the temptation to cut back the flowerheads in autumn as they provide interest in the winter garden.
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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