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Sanddune Wallflower
Erysimum capitatum

About Sanddune Wallflower (Erysimum capitatum) Erysimum capitatum is a species of wallflower known commonly as the sanddune wallflower, western wallflower, or prairie rocket. It is a mustard-like plant with thin, erect stems growing from a basal rosette and topped with dense bunches of variably colored flowers. Flowers are most typically bright golden, yellow, tangerine-colored, but plants in some populations may have red, white or purple flowers. Each flower has four flat petals. Seed pods are nearly-parallel to the stem. Although quite variable in appearance, it is an attractive garden plant. There are several natural variants of this plant. Each is treated separately, with certain variants considered endangered species in some areas. For example Erysimum capitatum var angustatum, the Contra Costa wallflower, is an endangered plant in the state of California.
Plant Description
Plant Type
Perennial herb, Annual herb

Flower Color
Yellow, White, Purple, Red

Flowering Season
Spring, Summer

Native Status

Natural Setting
Part Shade

Elevation ?
3' - 14460'

Annual Precip. ?
3.2" - 158.4"

Summer Precip. ?
0.14" - 6.12"

Coldest Month ?
17.9° F - 57.1° F

Hottest Month ?
38.4° F - 85.1° F

Humidity ?
0.08 vpd - 35.79 vpd

Soil Description
Prefers beach sand but tolerates garden soil

Fast, Medium

Landscaping Information
Ease of Care
Moderately Easy

Nursery Availability
Commonly Available

Other Names
Common Names
Coast Wallflower, Contra Costa Wallflower, Sand-dune Wallflower, Western Wallflower

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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