Allium acuminatum Hook.
Allium acuminatum belongs to the group of bulbous and tuberous plants.
Allium acuminatum was described by William Jackson Hooker. The name is considered as validly published.
Allium acuminatum 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 reach heights of 10 to 30 centimetres and are comparatively fast-growing and short-lived. They have a erect habit and produce multiple stems, the main growing season is in spring and summer.
Allium acuminatum is deciduous. The dark-green, simple leaves are basal. They are linear with entire margins and parallel venation. The foliage is porous.
Flowers and Fruits
Allium acuminatum produces umbels of showy, dark-purple campanulate flowers from May to June.
From summer to autumn the plants produce an abundance of black loculicidal capsules that are both edible and very ornamental.
Allium acuminatum is native to British Columbia, the Northwest of the US, California, the Rocky Mountains and Arizona.
The plants prefer a sunny situation on dry to moderately moist soil. The substrate should be sandy-loamy, gritty-loamy or sandy clay and comparatively poor with a pH between 6 and 8. The plants need a soil depth of at least 15 centimetres for good growth. They tolerate temperatures down to -23Â°C (USDA zone 6) and need a frost-free period of at least 17 weeks.
Tolerance of special soil conditions
- none: soil salinity, anaerobic soil
- medium: drought
- high: calcareous soil
The recommended planting distance is 60 to 90 centimetres.
Maintenance and Propagation
Propagate by bulblets or by sowing. The seeds require vernalization.
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.