Aster turbinellus
Aster turbinellus
Aster turbinellus
Prairie Dock, Turbinate Aster, starwort
Fast delivery, careful packaging
Catherine B., 09/11/2018
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Description
Aster turbinellus is a wild aster, its habit as an upright shrub gives a beautiful airy effect. It is adorned with small lavender heads around a yellow heart and is one of the last to bloom in the garden, for about three weeks in October-November. It thrives in full sun and adapts to all soils that are not too heavy, even dry ones. Perennial and very hardy, this aster with its subtle charm will be magnificent when combined with more sophisticated plants.
Asters belong to the asteraceae family. This species is native to dry prairies in the central and western United States. Aster turbinellus develops into an upright, spreading, open and bushy clump. It will reach a minimum height of 120 cm (47in) when in bloom and rapidly spread to 70 cm (28in). Bees and butterflies love the flowers from late September to early November, depending on the climate. The star-shaped heads are blue-mauve-lavender to light violet, their bright yellow heart is marked with purple and orange and measures 2 cm (1in) in diameter. The flowers transform into small tufts of bristly, tawny seeds, making this aster decorative in winter. The slender, branching stems are slightly hairy, pale grey when young turning brown with age. The foliage is dark green with blue highlights. The basal leaves are lanceolate and have smooth edges. In mature plants, the root system consists of a woody crown with fibrous roots on its underside. The plant occasionally produces rhizomes.
It is impossible to imagine our gardens without asters in their beds or borders. This one is particularly slender and very ornamental. It is a boon for wild gardens, large dry slopes, and the back of the garden that is never watered. It pairs very well with all kinds of border plants and accompanies the colours of autumn until the start of winter. We suggest the following combination: Aster turbinellus, Sedum 'Purple Emperor' and Penstemon 'Mother of Pearl'. The combination of colours, foliage, and textures is delightful, from summer to autumn. Group 3 or 5 plants of Aster turbinellus at the back of the border, where they will form a living and airy mass in the autumn light.
Aster turbinellus in pictures
Flowering
Foliage
Plant habit
Botanical data
Aster
turbinellus
Asteraceae
Prairie Dock, Turbinate Aster, starwort
Symphyotrichum turbinellum
North America
Planting and care
Plant Aster turbinellus in autumn or spring in light, well-worked, moist to dry, but not too poor, ordinary soil. You can add some organic matter at the time of planting if your soil is rocky. Heavy and wet soil will shorten its lifespan. It enjoys full sun. Staking the plant is not necessary, but it should be planted in a sheltered spot, away from strong winds that would flatten the clumps, near a wall or dense hedge. Once established, avoid moving it as it does not appreciate this. Maintain a spacing of at least 80 cm (32in) between plants. Divide the clumps every three or four years to ensure they remain floriferous. Cut back the withered stems after flowering, or leave the seeds in place, as the plant will self-seed in light soil.
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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