Libertia sessiliflora Caerulescens
Libertia sessiliflora Caerulescens
Libertia sessiliflora Caerulescens
Blue Libertia
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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
Libertia caerulescens, now renamed Libertia sessiliflora var. Caerulescens, is a small Chilean perennial which is still rare in cultivation, with an exotic appearance but which is relatively hardy. Related to irises, it is grown for the beauty of its spring flowers, in dense panicles of pale blue-mauve flowers enhanced by orange stamens. They bloom above a tuft of fine, bright green leaves, which are decorative even in winter. It prefers well-drained, non-calcareous soils as well as a humid and wet climate throughout the year.
Libertia sessiliflora Caerulescens is a botanical species native to coastal areas of Chile. It belongs to the Iridaceae family. This upright clump-forming perennial averages 35 cm (14in) in height and 40 cm (16in) in width. Anchored on a stump with short rhizomes, it forms a dense tuft, slightly stiff, slightly spreading, evergreen in winter. In May, thin floral stems appear among the leaves, which are a brown-grey colour, bearing at their tips panicles filled with numerous clusters of small flowers with three petals and three sepals in a light blue-mauve colour. The centre of the corolla is filled with prominent stamens with mauve filaments and orange anthers. The plant then produces an abundance of oval grey capsules containing round seeds that germinate easily. It develops stiff, linear leaves, 30 to 40 cm (12 to 16in) long and 1 cm (0.5in) wide, with parallel veins and a bright green colour. This Libertia seems capable of withstanding short frosts of around -10°C (14°F) in well-drained soil.
Still very rarely planted in gardens, this charming Chilean Libertia with blue flowers deserves to be acclimatised in our gardens. It will thrive in damp but well-drained, rather humus-rich soil, in sunny or semi-shaded positions. It is an extremely refined collector's plant that deserves a prime location. It pairs well with Sisyrinchium, Crocosmia, Liatris, or even toad lilies (Tricyrtis hirta). This perennial will be appreciated in damp rockeries and borders.
Libertia sessiliflora Caerulescens in pictures
Flowering
Foliage
Plant habit
Botanical data
Libertia
sessiliflora
Caerulescens
Iridaceae
Blue Libertia
South America
Planting and care
Plant Libertia sessiliflora in a moist but well-drained, fertile and humus-rich soil, which is preferably non-calcareous. It can be grown in full sun or partial shade, in a non-scorching position. This perennial is hardy up to -10°C (14°F) in a well-drained and porous soil. In very cold climates, it may be useful to mulch the base in preparation for heavy frosts. If seed formation is to be avoided, faded inflorescences can be removed.
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).
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.
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