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Allium caeruleum
Allium caeruleum
Allium caeruleum
Allium caeruleum
Allium caeruleum
Allium caeruleum
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Claudine F.
Claudine F. • 92 FR
Allium caeruleum
Allium caeruleum
Blue-flowered garlic, Azure-flowered garlic, Ornamental Onion
Bulbs planted upon receipt. I can't wait for spring to see the show, I didn't know this plant.
Geralde , 08/11/2024
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Delivery charge from €5.90 Oversize package delivery charge from €6.90.
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This plant carries a 6 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.
From €5.90 for pickup delivery and €6.90 for home delivery
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Description
Allium caeruleum is a decorative perennial bulbous plant that can be used in flower beds or as a cut flower. It produces beautiful umbels in May and June, with a bright blue colour and green reflections. These umbels, which are 3 to 5cm (1 to 2in) in diameter, contain 30 to 50 small star-shaped flowers. They are carried by sturdy stems.
This decorative garlic is native to temperate regions of Europe and Asia, as well as the Pamir mountain range. It stands at around 80cm (32in) tall. Its foliage is deciduous and medium green in colour. The leaves are 7cm (3in) long, linear in shape, and wither before flowering.
Semi-hardy, it can be grown in flower beds and borders, or as a standalone plant in the ground. It also works well in pots for balconies and patios. Its flowers can be used in bouquets.
Allium caeruleum in pictures
Plant habit
Flowering
Foliage
Botanical data
Allium
caeruleum
Alliaceae - Liliaceae
Blue-flowered garlic, Azure-flowered garlic, Ornamental Onion
Allium azureum
Cultivar or hybrid
Other Allium
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Planting and care
Allium caeruleum is easy to grow. It does not tolerate extreme cold but prefers warm conditions in the garden or partially shaded in a warm climate. Plant it preferably in late October at a depth of 10cm (4in) with a spacing of 15 to 20cm (6 to 8in) between bulbs. Place it in rich, light, moist but well-drained soil. Keep the soil dry throughout the summer resting period. It dislikes humidity. When the soil is not sandy, place it in a rockery or remove the bulbs in July to replant them in September. Cut off faded flowers at the base while leaving the stem and remove the foliage once it turns yellow. Beware of onion flies, powdery mildew, and white rot.
Planting period
Intended location
Care
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Small Spring Bulbs
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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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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
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 planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
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.