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California Yampah
Perideridia californica
About California Yampah (Perideridia californica) 0 Nurseries Carry This Plant Perideridia californica is a species of flowering plant in the carrot family known by the common name California yampah. It is endemic to California, where it is known from the Central Coast Ranges and a section of the Sierra Nevada foothills. It grows in moist soils, often near streams. It is a perennial herb which may approach 1.5 meters in maximum height, its slender, erect stem growing from cylindrical tubers measuring up to 12 centimeters long. Leaves near the base of the plant have blades up to 40 centimeters long which are divided into many flat, narrow, subdivided lobes. Leaves higher on the plant are smaller and less divided. The flower cluster is a compound umbel of many spherical clusters of small white flowers. These yield ribbed, oblong-shaped fruits under a centimeter long.
Plant Description
Plant Type
Plant Type
Perennial herb

5 ft tall

Flower Color
Flower Color

Wildlife Supported

Butterflies & moths hosted ( 2 likely * ) SHOW ALL
Epermenia cicutaella Image
Epermenia cicutaellaEpermenia cicutaella

Landscaping Information
Full Sun

Ease of Care
Ease of Care
Moderately Easy

Sunset Zones
Sunset Zones?
7*, 14*, 15*, 16*, 17*, 18*, 19*, 20*, 21*, 22*, 23*, 24*

Natural Setting
Site Type
Site Type
Moist soil along streams

Annual Precipitation: 11.6" - 44.2", Summer Precipitation: 0.26" - 1.02", Coldest Month: 40.7" - 50.4", Hottest Month: 62.6" - 76.4", Humidity: 0.57" - 24.68", Elevation: 26" - 5533"

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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