Eryngium planum Blue Hobbit
Eryngium planum Blue Hobbit
Eryngium planum 'Blue Hobbit'
Flat Sea Holly, Blue Eryngo
Well packaged, good recovery.
Corinne B, 14/06/2025
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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.
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Description
Eryngium planum 'Blue Hobbit', or Flat-leaved Sea Holly 'Blue Hobbit', is a superb summer perennial. From June to September, its intense metallic blue star-shaped flowers are carried on short, spiny, branching stems, resembling a thistle. The very toothed, bright green leaves contrast well with the inflorescences.
This sea holly belongs, even though the relationship is not obvious, to the same family as carrots: the Apiaceae family (formerly known as Umbelliferae). The wild species is native to central Europe. 'Blue Hobbit' is a dwarf variety that will not exceed 30cm (12in) in height and width. These plants often live only a few years, but can self-seed if the soil suits them. You can thus perpetuate them in the garden.
Eryngium planum 'Blue Hobbit' likes heat and drought. It adapts to all stony, deep, well-drained, sunny soils with a calcareous tendency. It even tolerates coastal areas. It cannot endure humidity (especially in winter). To prolong its decorative effect, you can leave the dry stems in place. Alternatively, use the stems to make dried bouquets, as they retain their beautiful colours when drying.
This sculptural plant will find its place in a rock garden, border, or wild or contemporary garden alongside Gauras, euphorbias, low grasses such as Bouteloua gracilis, or even thymes to add an aromatic note.
Eryngium planum Blue Hobbit in pictures
Flowering
Foliage
Plant habit
Botanical data
Eryngium
planum
'Blue Hobbit'
Apiaceae
Flat Sea Holly, Blue Eryngo
Cultivar or hybrid
Planting and care
Eryngium planum 'Blue Hobbit' should be planted from September to April in well-drained, dry, poor and rocky soil in full sun. In heavy soil or in a region that is too moist, mix compost, sand and gravel with your garden soil and plant on a mound. Don't forget to place gravel at the bottom of the hole for good drainage. It is sensitive to winter moisture.
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).
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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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.