Aster ageratoides Starshine
Aster ageratoides Starshine
Aster ageratoides Starshine
Japanese Aster, White Michaelmas Daisy, Asian Starwort
Well taken and well flowered.
Christine, 28/11/2022
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Description
Aster ageratoides Starshine is an easy-going perennial that is extremely floriferous even in partial shade, reliable and particularly resistant to powdery mildew. This variety is unique in that it blooms tirelessly, from summer to autumn, offering a multitude of brilliant white stars with golden hearts that fade without disfiguring the plant. Bushy and compact, this generous-tempered aster is an ideal plant in a large bed, in a country-style or naturalistic garden. It also makes beautiful flowering pots for the terrace or balcony.
Aster ageratoides is a perennial plant native to northern Myanmar, southwestern China and Tibet. It belongs to the Asteraceae family. The 'Starshine' variety stands out for its exceptional floribundity, even in slightly shaded areas, and its compact habit. This plant with weak suckering forms a dense and regular clump, composed of upright, stiff and closely packed stems, with deciduous, slightly rough, matte-green, deeply cut foliage. When mature, this variety will measure approximately 40 cm (16 in) in all directions. From July until October-November, countless small flowers appear with very fine white ligules, like seedlings of white daisies with yellow hearts. Very perennial, this variety is perfectly resistant to cold and powdery mildew, which often disfigures asters. Its above-ground vegetation dies in winter and reappears in spring.
Plant Aster ageratoides Starshine in any soil, in full sun or partial shade. This variety even tolerates poor-quality soil like backfill soil or compact, clayey soil. In the garden, place it at the front of your flower or shrub beds, or in a large flower border. For example, associate it with lady's mantle, heucheras, or small grasses (sun-loving Stipa, Carex or Japanese sedge, in partial shade). Its unrestrained flowering with a beautiful lightness attracts pollinating insects and promotes biodiversity in the garden. The flowering stems are very pretty in a vase in a floral arrangement, in the company of September roses.
The Aster genus offers a large number of species, represented by a multitude of floriferous varieties. There are varieties of all sizes, in an extremely rich range of colours. Several species are associated with each season.
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Aster ageratoides Starshine in pictures
Flowering
Foliage
Plant habit
Botanical data
Aster
ageratoides
Starshine
Asteraceae
Japanese Aster, White Michaelmas Daisy, Asian Starwort
Cultivar or hybrid
Planting and care
Plant Aster ageratoides Starshine in any rather fresh soil; it even accepts poor-quality soil such as backfill soil, or compact and clayey soils. But while it adapts to lean and relatively dry soils, it will require fertilisation in April, more frequent watering in summer, and mulching to maintain freshness at its base. In borders, respect a spacing of at least 50 cm (20 in) between plants. At the end of flowering, cut back the clump to 10 cm (4 in) to maintain a compact habit. Divide the clumps every 2 to 3 years to keep vigorous stumps and propagate this wonderful plant throughout the garden.
Plant it in a sunny location that will allow it to express its full potential (even though it also grows and flowers in semi-shaded areas). Its robust foliage seems unaffected by powdery mildew, even in hot weather. Its only requirement is not to compete with other perennials with a strong root system. Prune dry branches in winter.
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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