Calflora Taxon Report
Euphorbia helioscopia  L.
Wartweed
photo on Calflora
2019 Arvind Kumar
photo on Calflora
2020 Jennifer Mo
photo on Calflora
2023 Ethan Gilmore
photo on Calflora
2017 James Bailey
photo on Calflora
2021 Rachel Tertes
photo on Calflora
2020 Michael Perlmutter
photo on Calflora
2021 Rachel Tertes
photo on Calflora
2019 Jennifer Mo
photo on Calflora
2019 Jennifer Mo
photo on Calflora
2021 Jennifer Mo
Euphorbia helioscopia is an annual herb that is not native to California.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Euphorbia
Family: Euphorbiaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot
Toxicity: Severe skin irritation from touching the sap of this plant.

Habitat: disturbed

Communities: weed, characteristic of disturbed places

Name Status:
Accepted by JEF + PLANTS + POWO
Alternate Names:
PLANTSGalarhoeus helioscopius
PLANTSTithymalus helioscopius
External links:

Poison Control: Keep Away From Spurge Sap: Skin exposures to spurge sap ... typically result in redness of the exposed skin, swelling, and blistering. If someone has had a skin exposure to spurge sap, have them remove any contaminated clothing and gently wash the exposed skin with soap and water.

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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