Delphinium nuttallianum
| Delphinium nuttallianum | |
| Light: |  |
| Moisture: |  |
| Hardiness: | 4 |
| Soil pH: | 5.6-8.4 |
| Height: | 1' |
| Blooms: | Late Spring-Mid Summer |
| Native to: | |
| Tea: | Yes |
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Delphinium nuttallianum (common name: larkspur)
Propagation: Seed - sow March/April in a cold frame or May outdoors[1]. Keep moist and in a shady position until germination takes place[2]. The seed has a limited viability so it should be stored in a sealed container at about 3°c[3]. Temperatures above 15°c inhibit germination[2]. The seed usually germinates in 2 - 9 weeks at 15°c[2]. When they are large enough to handle, prick the seedlings out into individual pots and plant them out into their permanent positions in the summer.
Cuttings of basal shoots in April/May, taken before they become hollow at the base, and planted in a cold frame[1].
Division in spring[1] or early autumn[3].
Cultivation: Prefers a rich well-drained soil[1][3]. Dislikes water-logged soils[3]. Requires an open sunny position[4].
A very variable species, there are several sub-species[5].
A greedy plant, inhibiting the growth of nearby plants, especially legumes[6].
Slugs and snails are very attracted to this plant[3].
Range: Western N. America - British Columbia to California.
Habitat: Sagebrush desert to (more commonly)mountain valleys and slopes[7]. Most frequent in the ponderosa pine belt and is usually found in well-drained gravelly soils[7].
Usage: A blue dye is obtained from the flowers[8][9]. An ink can be made from the dye[8].
A parasiticide is obtained from the leaves[10]. It is quite toxic and so is for external use only.
Soil: Can grow in light, medium, and heavy soils.
Drainage: Prefers well drained soil.
Flower Type: Hermaphrodite
Known Hazards: All parts of the plant are toxic[10]. The plant is most toxic when it is young[3].
Links
References
- ↑ 1.0 1.1 1.2 1.3 Sanders, Thomas. Popular Hardy Perennials. Collingridge, 1926.
- ↑ 2.0 2.1 2.2 Bird, Alfred. Focus on Plants Volume 5. Thompson and Morgan, 1991.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
- ↑ Brickell, Christopher. The RHS Gardener's Encyclopedia of Plants and Flowers. Dorling Kindersley Publishers, 1990.
- ↑ Usher, George. A Dictionary of Plants Used by Man. Constable, 1974.
- ↑ Hatfield, Audrey. How to Enjoy your Weeds. Frederick Muller Ltd, 1974.
- ↑ 7.0 7.1 Hitchcock, Leo. Vascular Plants of the Pacific Northwest. University of Washington Press, 1955.
- ↑ 8.0 8.1 Coffey, Timothy. The History and Folklore of North American Wild Flowers. Facts on File, 1993.
- ↑ Moerman, Daniel. Native American Ethnobotany. Timber Press, 1998.
- ↑ 10.0 10.1 Schofield, Janice. Discovering Wild Plants.