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Delphinium uliginosum

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About Swamp Larkspur (Delphinium uliginosum) 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 flower cluster 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.
Plant Description
Plant Type
Perennial herb

Max. Height
0.26 - 2.3 ft (0.08 - 0.7 m)

Flower Color

Native Status
Natural Setting
Site Type
Streamsides, grassy places


Elevation ?
579' - 4370'

Annual Precip. ?
16.2" - 64.7"

Summer Precip. ?
0.28" - 1.70"

Coldest Month ?
38.9° F - 49.1° F

Hottest Month ?
63.4° F - 75.1° F

Humidity ?
1.17 vpd - 24.01 vpd

Landscaping Information
Common uses
Hummingbird Gardens, Bee Gardens

Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Bog Larkspur

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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