Allium cernuum

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Allium cernuum Roth

Alliaceae

Life form: bulb or tuber
Usage: economic plant

Exposure: sun   6

Moisture: dry bis Moisture: moderately moist

Soil: sandy loam - Soil: gritty loam - Soil: sandy clay - Soil: loamy clay - Soil: peat

Arrangement: basal
Leaves: decidious

Shape: linear

Division: simple

Shape: campanulate
Fruit: loculicidal capsule

61C / b71f53 

Inflorescence: umbel

Petals: not specified
Habit: not specified

Growth form: stemless

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Liliopsida
Subclassis:
Liliidae
Superordo:
Lilianae
Ordo:
Amaryllidales

Allium cernuum belongs to the group of bulbous and tuberous plants.

Naming

Allium cernuum was described by Albrecht Wilhelm Roth in 1798. The name is considered as validly published.

Common Names

  • lady's leek
  • nodding onion
  • wild onion

Taxonomy

Allium cernuum is a species in the genus Allium which contains approximately 943 to 1011 species and belongs to the family of the Alliaceae (Garlic Family). The type species of the genus is Allium sativum.

Characteristics

Allium cernuum - flowers

Growth

The plants are comparatively long-lived and reach heights of 30 to 60 centimetres.

Leaves

Allium cernuum is deciduous. The green, simple leaves are basal. They are linear with entire margins and parallel venation.

Flowers and Fruits

Allium cernuum produces umbels of dark-pink campanulate flowers from June to July.

The plants produce loculicidal capsules.

Root System

Distribution

Allium cernuum is native to the whole of the US with the exception of Florida and California, Canada and Mexico.

Cultivation

The plants prefer a sunny situation on dry to moderately moist soil. The substrate should be sandy-loamy, gritty-loamy, sandy clay, loamy clay or peaty soil with a pH between 8 and 10. They tolerate temperatures down to -23°C (USDA zone 6).

Classification after Prof. Dr. Sieber

  • rockeries

Tolerance of special soil conditions

  • none: drought, calcareous soil

Uses

The ornamental value of Allium cernuum lies especially in its fragrance. The recommended planting distance is 20 to 30 centimetres, the plants are best planted in groups of 5 to 10. Suited for roof greening, as well as suited as cut flowers and as bee pasture.

Maintenance and Propagation

The plants usually need very little maintenance.

  • Cut back after flowering.

Propagate by sowing or by bulblets.

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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