Arisaema flavum
| Arisaema flavum | |
| Light: |    |
| Moisture: |  |
| Hardiness: | 7 |
| Soil pH: | 5.6-8.4 |
| Cross Pollinated | |
| Height: | 1' |
| Blooms: | Early Summer-Mid Summer |
| Open Woods Forest | |
| Native to: | |
| Edible Rating: |  |
| Medicinal Rating: |  |
| Tea: | Yes |
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Arisaema flavum
Propagation: Seed - best sown as soon as it is ripe in a shady position in a cold frame[1]. Stored seed remains viable for at least a year and can be sown in spring in the greenhouse but it will probably require a period of cold stratification. Germination usually takes place in 1 - 6 months at 15°c[1]. When large enough to handle, prick the seedlings out into individual pots and grow them on in light shade in the greenhouse for at least a coupe of years until the corms are more than 20mm in diameter. Plant out into their permanent positions whilst they are dormant.
Division of tubers when the plant dies down in late summer.
Cultivation: Prefers a cool moist peaty soil in the bog, woodland garden or a sheltered border in semi-shade[1][2]. Prefers a loamy or peaty soil[3] and will tolerate a sunny position if the soil is moist but not water-logged and the position is not too exposed[3][2]. This species is the most drought tolerant member of the genus.
Plants are nearly hardy in Britain, they normally succeed outdoors in the milder areas of the country[3]. Only plant out full sized tubers and mulch them with organic matter in the winter[2]. Plants need protection from slugs[2].
Most species in this genus are dioecious, but they are sometimes monoecious and can also change sex from year to year. The flowers of this species are usually either monoecious or all male[4].
Range: E. Asia - Himalayas to China. N. Africa - Yemen.
Habitat: Mountain slopes, farmland edges and roadsides in sub-alpine steppe, 3500 - 4300 metres in Tibet[5]. Locally common in Kashmir on humus-rich soils[6].
Edibility: Young leaves - cooked and used as a vegetable[7]. Some caution is advised, see the notes above on toxicity.
Medicinal: Expectorant. It is used in the treatment of chronic tracheitis, bronchiectasis, tetanus and epilepsy[5].
Usage: Used as a pesticide[5]. No further details are given, but the report might be referring to the tubers.
Pollinators: Flies
Soil: Can grow in light and medium soils.
Drainage: Prefers well drained soil.
Seed Ripens: Early Summer-Mid Summer
Flower Type: Monoecious
Known Hazards: The plant contains calcium oxylate crystals. These cause an extremely unpleasant sensation similar to needles being stuck into the mouth and tongue if they are eaten but they are easily neutralized by thoroughly drying or cooking the plant or by steeping
Links
References
- ↑ 1.0 1.1 1.2 Rice, Graham. Growing from Seed Volume 2. Thompson and Morgan, 1988.
- ↑ 2.0 2.1 2.2 2.3 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
- ↑ 3.0 3.1 3.2 Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
- ↑ Flora of China. 1994.
- ↑ 5.0 5.1 5.2 Jingwei, Zhang and Ching-Wei Chang. Alpine Plants of China. Horizon Books, 1982.
- ↑ Singh, Gurcharan and Premnath Kachroo. Forest Flora of Srinagar. Bishen Singh Mahendra Pal Singh, 1976.
- ↑ Manandhar, Narayan. Plants and People of Nepal. Timber Press, 2002.