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Scarlet Spiderling Back to Plant Page
Boerhavia coccinea

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About Scarlet Spiderling (Boerhavia coccinea) Boerhavia coccinea is a species of flowering plant in the four o'clock family which is known by many common names, including scarlet spiderling, red boerhavia, hogweed, and in Spanish, hierba del cancer and hierba de la hormiga. It is a widespread plant whose native range is not certain but probably includes the southwestern United States and parts Mexico. It is present across the southeastern United States, where it may be naturalized. It is present in Africa, Asia, Australia, and South America. It is present on many Pacific islands, including the Hawaiian Islands, where it is an invasive species and a noxious weed. It grows in a wide variety of habitats, including disturbed areas as a common roadside weed. This is a low-lying, sprawling perennial herb producing reaching stems which can exceed a meter in length. The stems are somewhat hairy and sticky with glands. The generally oval-shaped leaves are held on short petioles. They are wavy along the edges and may have reddish margins. The inflorescence is a small head of tiny frilly flowers, each just a few millimeters long. The flowers are often bright scarlet to red-violet in color but can be shades of pink, yellow, or white.
Plant Description
Plant Type
Perennial herb

Max. Height
3.3 ft (1 m)

Flower Color
Red, Pink

Native Status

Natural Setting
Elevation ?
389' - 6400'

Annual Precip. ?
3.4" - 50.9"

Summer Precip. ?
0.22" - 2.00"

Coldest Month ?
37.2° F - 60.6° F

Hottest Month ?
57.9° F - 87.9° F

Humidity ?
2.28 vpd - 40.37 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Red Boerhavia, In Spanish, Hogweed

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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