Allium cepa L.
Allium cepa belongs to the group of bulbous and tuberous plants.
Allium cepa was described by Carl Linnaeus in 1753. The name is considered as validly published.
Allium cepa 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.
The plants are comparatively long-lived and reach heights of 30 to 100 centimetres. The plants reach a width of 10 to 30 centimetres.
Allium cepa is deciduous. The simple leaves are basal. They are linear with entire margins and parallel venation. The surface of the leaves is glabrous.
Flowers and Fruits
Allium cepa produces umbels of white campanulate flowers from June to August. The plants are hermaphroditic.
The plants produce loculicidal capsules.
Allium cepa is native to : garden origin.
The plants prefer a sunny situation on dry to moderately moist soil. The substrate should be sandy-loamy, gritty-loamy or sandy clay soil. They tolerate temperatures down to -29Â°C (USDA zone 5).
Tolerance of special soil conditions
- high: city climate
Suited as bee pasture.
Maintenance and Propagation
The plants usually require only a moderate amount of maintenance.
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe 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.