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San Diego Bursage Back to Plant Page
Ambrosia chenopodiifolia

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About San Diego Bursage (Ambrosia chenopodiifolia) Ambrosia chenopodiifolia is a species of ragweed known by the common name San Diego Burrsage or San Diego Burr Ragweed. It is native to Baja California, and California as far north as San Diego County, where it is a member of the coastal sage scrub plant community. This is a thickly branching shrub exceeding 3 meters in maximum height. The leaves are ovals up to 3 centimeters long and coated in white hairs. They are sometimes lobed. Like other ragweeds it is monoecious, with each flower cluster bearing heads of pistillate (female) flowers below a cluster of staminate (male) flowers. The flower cluster is spiny, especially when in fruit. The fruit is a spherical, woolly bur about half a centimeter long covered in hooked spines.
Plant Description
Plant Type

Max. Height
5.5 - 11 ft (1.7 - 3.4 m)

Flower Color

Flowering Season

Native Status
Natural Setting

Elevation ?
66' - 871'

Annual Precip. ?
10.3" - 14.4"

Summer Precip. ?
0.24" - 0.35"

Coldest Month ?
50.9° F - 54.6° F

Hottest Month ?
71.8° F - 77.4° F

Humidity ?
1.59 vpd - 21.44 vpd

Landscaping Information
Common uses

Nursery Availability
Sometimes Available

Other Names
Common Names
San Diego Burrsage, San Diego Burr Ragweed, San Diego Bur Ragweed

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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