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Delphinium uliginosum
Swamp larkspur is a perennial wildflower native to northwest California, growing in damp hillside sites on serpentine soils. It is grown in gardens mainly for its blue flowers and likes moisture while growing.
Delphinium uliginosum is a species of larkspur known by the common names swamp larkspur and bog larkspur. It is endemic to California, where it is known from very localized populations in the Inner North Coast Ranges. It grows in chaparral, grassland, and other habitat in the hills, generally on serpentine soils. This is a perennial herb producing a hairless, erect stem up to 70 centimeters tall. It can be identified by its leaves, which are fan-shaped, a characteristic unique among the larkspurs, which generally have palmate leaves with narrow, fingerlike lobes. The inflorescence bears up to 45 flowers, each on an upright pedicel which may exceed 10 centimeters long. The flower is blue with the longest sepals 1.4 centimeters long and a spur about the same length. The fruit is one or two centimeters long.
Doubtful knight's-spur · Consolida armeniaca · Consolida oliveriana · Royal knight's-spur · Anderson's larkspur · Baker's delphinium · Subalpine larkspur · Little larkspur · Musk Larkspur · California larkspur · Delphinium calthifolium · Scarlet larkspur
Text excerpted from the Wikipedia article Delphinium uliginosum 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.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
