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Bidens pilosa  L.  var. pilosa 

(not an active name)
Common beggar ticks
Bidens pilosa var. pilosa is an annual herb that is not native to California.
also called Bidens pilosa
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
Parent: Bidens pilosa
Genus: Bidens
Family: Asteraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands:
Arid West: Equally likely to occur in wetlands and non wetlands
Mountains, Valleys and Coast: Occurs usually in wetlands, occasionally in non wetlands

Habitat: disturbed

Communities: wetland-riparian, weed, characteristic of disturbed places

Name Status:

 Alternate Names:
OTHERBidens pilosa var. radiata
JEF + PLANTSBidens pilosa
Information about  Bidens pilosa var. pilosa from other sources
USDA PLANTS Profile (BIPI)

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Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/07/2025).