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Golden Larkspur
Delphinium luteum

About Golden Larkspur (Delphinium luteum) The endangered flower Delphinium luteum, the yellow larkspur, is a perennial of the buttercup family which is endemic to the rocky, foggy hillsides of coastal Sonoma County, California. As of 2005 there were about 200 individuals believed to be in existence. This rare plant is a small herb bearing bright yellow cornucopia-shaped flowers. The plant was never distributed beyond the coastal area of Sonoma and Marin Counties, and has never been abundant. Activities in the area including quarrying, grazing, agriculture, and development further reduced the population of yellow larkspur to its current near extinction. It has been listed as an endangered species since the 1970s. Extremely isolated patches of the plant still exist on private property near Bodega Bay, where it is protected.
Plant Description
Plant Type
Perennial herb

Max. Height
0.7 - 1.8 ft (0.21 - 0.5 m)

Flower Color

Native Status
Natural Setting
Elevation ?
76' - 2234'

Annual Precip. ?
5.9" - 52.5"

Summer Precip. ?
0.43" - 1.34"

Coldest Month ?
45.3° F - 54.7° F

Hottest Month ?
64.4° F - 81.1° F

Humidity ?
0.45 vpd - 33.73 vpd

Landscaping Information
Common uses
Hummingbird Gardens, Bee Gardens

Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Yellow 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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