Centaurea ruthenica

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Centaurea ruthenica Lam.

Asteraceae

Life form: perennial
Usage: ornamental plant

Exposure: sun   3

Moisture: moderately moist bis Moisture: moist

Soil: sandy loam - Soil: gritty loam - Soil: sandy clay

Arrangement: not specified
Leaves: decidious

Shape: ovate

Division: simple

Shape: many-stellate
Fruit: achene

3D / efe981 

Inflorescence: solitary

Petals: not specified
Habit: not specified

Growth form: erect

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Asteridae
Superordo:
Asteranae
Ordo:
Asterales
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Centaurea ruthenica is a perennial.

Contents

Naming

Centaurea ruthenica was described by Jean-Baptiste Pierre Antoine de Monet de Lamarck in 1785. The name is considered as validly published.

Taxonomy

Centaurea ruthenica is a species in the genus Centaurea which contains approximately 864 to 1486 species and belongs to the family of the Asteraceae (Aster Family). The type species of the genus is Centaurea paniculata.

Characteristics

Centaurea ruthenica - flowers

Growth

The perennials have an upright growth and reach heights of 1 to 1,5 metres.

Leaves

Centaurea ruthenica is deciduous. The leaves are simple and dark-green. They are ovate with pinnatisect margins.

Flowers and Fruits

Centaurea ruthenica produces solitary ligth-yellow many-stellate flowers from July to August.

The perennials produce achenes.

Root System

Distribution

Centaurea ruthenica is native to Eastern Europe, the Caucasus, West-Siberia and Central Asia.

Cultivation

The perennials prefer a sunny situation on fresh to moist soil. The substrate should be sandy-loamy, gritty-loamy or sandy clay soil with a pH between 8 and 10. They tolerate temperatures down to -40°C (USDA zone 3).

Classification after Prof. Dr. Sieber

  • woodland borders (soil usually rich in humus)

Uses

The recommended planting distance is 40 to 50 centimetres, the perennials are best planted in groups of 3 to 10. Suited as cut flowers and as bee pasture.

Maintenance and Propagation

The plants need little to no maintenance if grown under suitable conditions.

  • Cut back faded flowering shoots.

Propagation

  • Sowing
  • Cuttings
  • Division


Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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