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Eryngium oliverianum
Eryngium oliverianum
Eryngium oliverianum
Eryngium oliverianum
Eryngium oliverianum
Eryngium oliverianum
Sea Holly, Eryngo
Disappeared without a trace in a flowerbed; my investigation yielded no results (and I'm not proud of it).
Eliane G., 17/10/2017
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Dispatch by letter from €3.90.
Delivery charge from €5.90 Oversize package delivery charge from €6.90.
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This plant carries a 12 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
From €5.90 for pickup delivery and €6.90 for home delivery
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Description
A hybrid variety, cultivated for its beauty and high cold resistance, Eryngium x oliverianum has many advantages to being incldued in wild-looking dry gardens.
Called sea holly or ornamental thistle, Eryngium x oliverianum is a tall 90cm (35in) high perennial that likes light, chalky and even rocky soils.
The sturdy stems are often navy blue and bear sumptuous conical umbels of grey-blue flowers crowned with finely cut, electric blue bracts. Fresh or dried, the flowers are highly prized by florists. The olive green foliage, variegated with silver veins, measures about 10cm (4in) in diameter.
Grow it in light, well-drained, even chalky soil in the sun alongside Gaura lindheimeri 'Snowstorm', Verbascum bombyciferum 'Polarsommer', and Salvia nemorosa 'Caradonna'.
Eryngium oliverianum in pictures
Flowering
Foliage
Plant habit
Botanical data
Eryngium
oliverianum
Apiaceae
Sea Holly, Eryngo
Cultivar or hybrid
Other Eryngium - Eryngo
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Planting and care
Eryngium oliverianum is certainly the most cold-resistant species of thistle. It requires a rocky or sandy soil, rather poor, rather chalky, as well as a sunny position. Its lifespan will be shorter the heavier, wetter and more compact the soil.
Planting period
Intended location
Care
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Summer flowering perennials
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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).
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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.