Aconitum carmichaelii

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Aconitum carmichaelii
Light:Full Sun Part Shade
Moisture:Mesic
Hardiness:3
Soil pH:5.6-8.4
Height:5'
Width:1'
Blooms:Late Summer-Early Fall
Open Woods Forest
Native to:
Medicinal Rating:
Tea:Yes
Poisonous

Aconitum carmichaelii (common name: japanese aconite)

Propagation: Seed - best sown as soon as it is ripe in a cold frame[1]. The seed can be stratified and sown in spring but will then be slow to germinate[2]. When large enough to handle, prick the seedlings out into individual pots and grow them on in a cold frame for their first winter. Plant them out in late spring or early summer.

Division - best done in spring but it can also be done in autumn[3][1]. Another report says that division is best carried out in the autumn or late winter because the plants come into growth very early in the year[4].

Cultivation: Thrives in most soils and in the light shade of trees[3]. Grows well in heavy clay soils. Prefers a moist soil in sun or semi-shade[5]. Plants will only thrive in a sunny position if the soil remains moist throughout the growing season[6]. Prefers a calcareous soil.

A very ornamental plant[4], there are some named forms[6]. It grows well in open woodlands[3][7].

Members of this genus seem to be immune to the predations of rabbits and deer[4].

A greedy plant, inhibiting the growth of nearby species, especially legumes[8].

Closely related to A. fischeri and considered to be part of that species by some botanists[3].

Range: E. Asia - C. and W. China to N. America.

Habitat: Forest margins, scrub, grassy slopes and mountains at elevations of 100 - 2200 metres[9].

Medicinal: A widely used herbal remedy in China, where it is cultivated for its root[10]. This is harvested in the autumn as the plant dies down and is then dried before being used. The root is anaesthetic, analgesic, anti-inflammatory, antirheumatic, cardiotonic, stimulant and vasodilator[11][10][6]. It is used in the treatment of shock and collapse, chronic diseases with symptoms of cold, gastralgia and rheumatic arthralgia, oedema and diarrhoea due to hypofunction of the spleen and kidney[11]. Use with great caution, the plant is very poisonous and should not be used internally[10] unless under the direction of a qualified practitioner[6]. Overdoses lead to numbness of the tongue, lips and extremities, nausea, vomiting, irritability and coma[11].

Pollinators: Bees

Soil: Can grow in light, medium, and heavy soils.

Flower Type: Hermaphrodite

Heavy Clay: Grows in heavy-clay soils.

Known Hazards: The whole plant is highly toxic - simple skin contact has caused numbness in some people[3][6].

Also Known As: A carmichaeli wilsonii. A. fischeri. Forbes.&Hemsl. non Rchb.

Links

References

  1. 1.0 1.1 Sanders, Thomas. Popular Hardy Perennials. Collingridge, 1926.
  2. Rice, Graham. Growing from Seed Volume 1. Thompson and Morgan, 1987.
  3. 3.0 3.1 3.2 3.3 3.4 Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  4. 4.0 4.1 4.2 Thomas, Graham. Perennial Garden Plants. J. M. Dent & Sons, 1990.
  5. Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  6. 6.0 6.1 6.2 6.3 6.4 Bown, Deni. Royal Horticultural Society Encyclopaedia of Herbs and Their Uses. Dorling Kindersley, 1995.
  7. Grieve, Margaret. A Modern Herbal. Penguin, 1984.
  8. Hatfield, Audrey. How to Enjoy your Weeds. Frederick Muller Ltd, 1974.
  9. Flora of China. 1994.
  10. 10.0 10.1 10.2 Duke, James and Edward Ayensu. Medicinal Plants of China. Reference Publications, 1985.
  11. 11.0 11.1 11.2 Yeung, Him-Che. Handbook of Chinese Herbs and Formulas. Institute of Chinese Medicine, 1985.