Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Eryngium giganteum
Giant Sea Holly
Brilliantly robust plant if one accepts that the spike one buys dies the year after flowering but has given birth to lots of young plants that flower without any issue. A true nursery for pollinators and truly stylish with its white thorny foliage. A trunk that can lift curbs due to its vigour.
Fabien, 05/02/2022
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Description
Eryngium giganteum, also known as Miss Willmott's Ghost, is a tall and magnificent thistle, which forms clumps of finely cut, blue-green foliage that becomes more silvery in summer. It displays beautiful grey-blue inflorescences, shaped like cones, surrounded by stunning bracts which are light and vibrant silver and very spiny, for a long period in summer. This biennial plant generally dies after flowering, but reappears through self-seeding in light and deep soil. It is perfect in wildflower beds, stunning in fresh or dried bouquets.
Eryngium giganteum is a plant of the Apiaceae (Umbelliferae) family, native to the Caucasus and Iran. Hardy to -20°C (-4°F), this thistle develops a rosette of deciduous, basal, heart-shaped leaves, medium green, shiny, white-veined, which take on a more greyish hue with heat. In July, grey-blue inflorescences ripen into conical and spiny cylinders, 8-10cm (3-4in) long, accompanied by cut, leathery, silver bracts, also 10cm (4in) long, all on stiff stems, bearing bluer leaves, and branched at the tips. Dried flowers last well in dried bouquets. This short-lived plant, readily self-seeds in rocky and deep soils.
Eryngium giganteum is well suited for rock gardens, flower beds, or wild gardens alongside Echinaceas, lavenders, Dianthus, Lychnis coronaria, oriental poppies, Perovskia, and Stipa. This plant is beautiful everywhere, without overshadowing other blooms. Its rapid growth is a blessing for new gardens or for filling in spaces left empty by a harsh winter. Semi-open cut flowers are splendid in dried bouquets and can be used to create wonderful table decorations for Christmas.
Eryngium giganteum in pictures
Flowering
Foliage
Plant habit
Botanical data
Eryngium
giganteum
Apiaceae
Giant Sea Holly
Caucasus
Planting and care
Eryngium giganteum should be planted from September to April in a well-draining, dry, poor, and rocky soil, in full sun. In heavy soil or in wet regions, mix compost, sand, and gravel with your garden soil and plant in a raised bed. Don't forget to place gravel at the bottom of the hole for good drainage. It is sensitive to winter waterlogging.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
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