Aconitum columbianum Nutt.
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Aconitum columbianum is a perennial.
Aconitum columbianum was described by Thomas Nuttall. The name is considered as validly published.
Aconitum columbianum is a species in the genus Aconitum which contains approximately 383 to 521 species and belongs to the family of the Ranunculaceae (Buttercup Family). The type species of the genus is Aconitum napellus.
The perennials reach heights of 1,5 to 2 metres, the main growing season is in spring and summer. They have a erect habit.
Aconitum columbianum is deciduous. The dark-green leaves are alternate.
Flowers and Fruits
Aconitum columbianum produces showy blue flowers from May to July.
The perennials produce black follicles in summer.
The perennials prefer a half-shady situation on moist soil. They prefer loamy, sandy-loamy, gritty-loamy, clay, sandy clay or loamy clay soil with a pH between 5,4 and 7,2. The plants need a soil depth of at least 25 centimetres for good growth. They tolerate temperatures down to -35Â°C (USDA zone 4) and need a frost-free period of at least 16 weeks.
Tolerance of special soil conditions
- none: soil salinity
- low: drought
- medium: anaerobic soil, calcareous soil
The recommended planting distance is 2 to 2,4 metres.
Maintenance and Propagation
Propagate by sowing.
Aconitum columbianum is moderately toxic.
Please read the health issues note!
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.