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Ranunculaceae FAMILY

Delphinium menziesii

Delphinium menziesii

Edibility
0/5
Medicinal
1/5

Safety & Hazards

All parts of the plant are toxic[1]. The plant is most toxic when it is young[2].

Cultivation Details

HabitPerennial
Growth—

Prefers a rich well-drained soil[3, 2]. Dislikes water-logged soils[2]. Requires an open sunny position[4]. A greedy plant, inhibiting the growth of nearby plants, especially legumes[5].

Propagation

Seed - sow early to mid spring in a cold frame or May outdoors[3]. Keep moist and in a shady position until germination takes place[6]. The seed has a limited viability so it should be stored in a sealed container at about 3°c[2]. Temperatures above 15°c inhibit germination[6]. The seed usually germinates in 2 - 9 weeks at 15°c[6]. 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 mid spring, taken before they become hollow at the base, and planted in a cold frame[3]. Division in spring[3] or early autumn[2]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Delphinium+menziesii>

Pollinators

Data unavailable

References

  1. [1]Discovering Wild Plants - Alaska, W. Canada and the Northwest. — Schofield. J. J. · Alaska Northwest Books; Alaska · 2003 · ISBN 0882403699 ↩︎A nice guide to some useful plants in that area.
  2. [2]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
  3. [3]Popular Hardy Perennials. — Sanders. T. W. · Collingridge · 1926 · ISBN - ↩︎A fairly wide range of perennial plants that can be grown in Britain and how to grow them.
  4. [4]The RHS Gardener's Encyclopedia of Plants and Flowers — Brickell. C. · Dorling Kindersley Publishers Ltd. · 1990 · ISBN 0-86318-386-7 ↩︎Excellent range of photographs, some cultivation details but very little information on plant uses.
  5. [5]How to Enjoy your Weeds. — Hatfield. A. W. · Frederick Muller Ltd · 1977 · ISBN 0-584-10141-4 ↩︎Interesting reading.
  6. [6]Focus on Plants. Volume 5. (formerly 'Growing from seed') — Bird. R. (Editor) · Thompson and Morgan. · 1991 · ISBN - ↩︎Very readable magazine with lots of information on propagation. A good article on Corydalis spp.
  7. [7]Vascular Plants of the Pacific Northwest. — Hitchcock. C. L. · University of Washington Press · 1955 · ISBN - ↩︎A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader.
  8. [8]Flora of N. America — http://flora.huh.harvard.edu/fna/ ↩︎An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
  9. [9]Native American Ethnobotany — Moerman. D. · Timber Press. Oregon. · 1998 · ISBN 0-88192-453-9 ↩︎Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.