Allium Ostara
Allium Ostara
Allium Ostara
Allium Ostara
Allium Ostara
Allium Ostara
Allium Ostara
Allium Ostara
Ornamental Onion, Flowering Garlic
Thank you to the individuals (for order preparation and shipping service), the bulbs received are healthy. Planted near yellow or orange roses, I am now patiently awaiting the flowering...
Thierry, 27/05/2023
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Description
Allium 'Ostara' is a hybrid ornamental garlic of medium stature, with perfectly round flowers of intense purple-pink, which faithfully blooms every year in late spring or early summer. Unlike many others, this variety keeps its beautiful foliage before, during, and after flowering. It boasts a colourful flowering, animated by a constant flight of pollinating insects. Reliable and easy to grow, it thrives in the sun, in ordinary but well-drained soil. Perfect for bordering an alley or a bed. It also works well in a rock garden or a planter on a patio. Its flowers are very long-lasting in bouquets, fresh or dried.
Allium 'Ostara' is a variety of hybrid ornamental garlic resulting from the cross-breeding of two botanical species: A. karataviense and A. atropurpureum. All these plants belong to the Amaryllidaceae family. They are cousins of garlic and leeks, with which they share a characteristic odour in their foliage, perceptible when crushed.
The 'Ostara' cultivar develops in spring from a slightly flattened bulb covered with a whitish epidermis. It forms a clump of wide, decorative, blue-green leaves. It reaches about 30cm (12in) in height and 30 to 40cm (12 to 16in) in width. Flowering takes place from May-June to July, earlier or later depending on the climate. Flowering stems measuring 40 to 50cm (16 to 20in) in height emerge from the centre of the clumps. Each stem carries a solitary inflorescence in the shape of a perfect sphere measuring 7 to 10cm (3 to 4in) in diameter. The compact inflorescence is composed of a multitude of tiny star-shaped flowers in intense pink-purple. They are nectar-rich and honey-producing. The deciduous foliage dries up a few weeks after flowering. The plant then survives the winter in the form of bulbs. This variety easily naturalises by producing bulb offsets.
Planted en masse along an alley, in small groups in a rock garden, as a border for a bed, or even combined with flowers in shades of purple, pink, and blue, this 'Ostara' ornamental garlic proves to be a gem for romantic flower beds. It goes perfectly with catmints, bellflowers, and agastaches. Also consider pairing it with lavenders and small-sized grasses such as Stipa tenuifolia or Pennisetum advena 'Rubrum', and many more. Its flowers can also structure a contemporary garden where various geometric shapes oppose each other. Furthermore, it can be planted with landscape roses and boxwoods trimmed into cones.
In short, the possibilities are endless! There is a corner in your garden, as well as on your balcony, where this garlic will work wonders.
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Allium Ostara in pictures
Flowering
Foliage
Plant habit
Botanical data
Allium
Ostara
Amaryllidaceae
Ornamental Onion, Flowering Garlic
Allium karataviense (x) atropurpureum
Cultivar or hybrid
Planting and care
Alliums are easy to grow in sunny and well-drained soil that does not retain too much moisture. Plant the bulbs preferably before the end of October so that they have time to establish. They are sensitive to excess winter moisture. 'Ostara' enjoys the sun and thrives in any good, well-loosened, and drained garden soil. Once the foliage has dried, dry soil is perfectly tolerated by the resting bulb. In clay soil, incorporate a bit of gravel or coarse sand. It is hardy and not demanding in terms of water, but appreciates the soil remaining slightly moist during flowering. Unlike tulip bulbs, ornamental garlic bulbs repel rodents. These plants have few enemies in our gardens.
Planting period
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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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