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Eremogone congesta
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Ballhead Sandwort
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Eremogone congesta

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About Ballhead Sandwort (Eremogone congesta) Arenaria congesta is a species of flowering plant in the pink family known by the common name ballhead sandwort. It is native to western North America from central Canada to the American southwest. This is a perennial herb forming a tuft of slender upright stems up to about 40 centimeters tall. The leaves are needlelike to thready, up to 8 centimeters long and only a few millimeters wide. They may be fleshy or flat and they often have a very sharp tip. Most of the leaves are located in a patch at the base of the plant, and there are a few scattered along the mostly naked stem. The flower cluster is an open or rounded cyme of five-petalled white flowers. The fruit is a toothed capsule containing several reddish seeds. The plant was used for a variety of medicinal purposes by Native American groups, including the Shoshone.
Plant Description
Plant Type
Perennial herb

Max. Height
1.3 ft (0.4 m)

Flower Color
White, Red

Native Status

Natural Setting
Site Type
Dry, rocky or sandy slopes and ridges

Sun, Part Shade

Elevation ?
254' - 12226'

Annual Precip. ?
3.7" - 159.5"

Summer Precip. ?
0.14" - 6.17"

Coldest Month ?
22.7° F - 54.3° F

Hottest Month ?
40.6° F - 83.6° F

Humidity ?
0.47 vpd - 37.78 vpd


Landscaping Information
Other Names
Botanical Names
Arenaria congesta

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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