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Centaurée, Centaurea ruthenica
Centaurée, Centaurea ruthenica
Centaurea ruthenica
Centaurea ruthenica
Russian knapweed
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Dispatch by letter from 3,90 €.
Delivery charge from 5,90 € Oversize package delivery charge from 6,90 €.
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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.
From 5,90 € for pickup delivery and 6,90 € for home delivery
Express home delivery from 8,90 €.
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Description
Centaurea ruthenica is a mountainous species, forming a dense clump of elongated leaves carried by flexible stems. In summer, it is topped with creamy-white globular flowers, with very fine petals. It can grow very tall (over 1m (3ft)) in rich soil. However, when planted in rocky and poor soil, it forms a dense bush about 50 to 70cm (20 to 28in) tall and wide.
A good species for a large rockery, a scree garden, or in perennial beds in sandy soil.
Most of the species are found in a wide area of the Mediterranean. They all prefer light, even poor and limestone, soil, as well as full sun. Depending on their size or their tolerance to moist soil, they will find their place in rock gardens or perennial beds. The proposed varieties are all perennials and have a good longevity.
Centaurea ruthenica in pictures
Flowering
Foliage
Plant habit
Botanical data
Centaurea
ruthenica
Asteraceae
Russian knapweed
Cultivar or hybrid
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Planting and care
Planting period
Intended location
Care
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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).
Photo Sharing Terms & Conditions
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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.