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Doubtful knight's-spur

Consolida ajacis

Also called Larkspur, Rocket Larkspur, Oriental Knight’s Larkspur, Eastern Larkspur

Doubtful knight's-spur
Photo: Alberto Salguero, CC BY-SA 3.0

Doubtful knight's-spur, also called rocket larkspur, is a hardy annual grown for its spikes of blue, pink or white flowers. Sow seed directly in the garden in full sun, as it dislikes being transplanted.

Family
Ranunculaceae (Buttercup family)
Grows as
Annual
Light
Full sun
Water
Water regularly during dry spells, keeping soil moist but not waterlogged.
Soil
Well-drained, moderately fertile garden soil.
Temperature
Hardy annual tolerant of cool weather; protect from hard frost.
How easy
Easy
Safety
Toxic: Aerial parts and seeds contain diterpenoid alkaloids, including the highly toxic methyllycaconitine, so the whole plant should be treated as poisonous.

About

Consolida ajacis (doubtful knight's spur or rocket larkspur) is an annual flowering plant of the family Ranunculaceae native to Eurasia. It is widespread in other areas, including much of North America, where it is an introduced species. It is frequently grown in gardens as an ornamental for its spikes of blue, pink or white flowers. It may reach a meter in height. Since the aerial parts and seeds of C. ajacis have been found to contain diterpenoid alkaloids (see chemical constituents below), including the highly toxic methyllycaconitine, the plants should be considered as poisonous.

Other Delphinium plants

Royal knight's-spur · Scarlet larkspur · Garden delphiniums · Candle larkspur · Siberian larkspur · Violet Larkspur · Rocky Mountain larkspur · Larkspur

Text excerpted from the Wikipedia article Consolida ajacis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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