Bidens cernua L.
Nodding Beggartick, Bur Marigold, Nodding Beggarticks, Nodding Bur Marigold, Nodding Burmarigold, Nodding Burr-marigold, Sticktight
Asteraceae (Aster Family)
Synonym(s): Bidens cernua var. cernua, Bidens cernua var. dentata, Bidens cernua var. elliptica, Bidens cernua var. integra, Bidens cernua var. minima, Bidens cernua var. oligodonta, Bidens cernua var. radiata, Bidens glaucescens
USDA Symbol: BICE
Numerous yellow flower heads nod increasingly as the flowers mature.
The species name "cernua" is Latin for "nodding." Bur Marigold seeds are sometimes eaten by ducks. Where the range of this species and Smooth Bur Marigold (B. laevis) overlap in coastal areas, B. cernua is much less prevalent.
From the Image Gallery
Plant CharacteristicsDuration: Annual
Root Type: Tap
Size Notes: Usually up to about 40 inches tall. Stems decumbent to erect, sometimes more than 12 feet long, rooting at proximal nodes.
Fruit: Blackish or brown, to purplish. Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Yellow
Bloom Time: Aug , Sep , Oct
DistributionUSA: AK , AL , AR , AZ , CA , CO , CT , DC , DE , GA , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MT , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SD , TN , UT , VA , VT , WA , WI , WV , WY
Canada: AB , BC , MB , NB , NS , NT , ON , PE , QC , YT
Native Distribution: Nova Scotia; in the east, mainly coastal to North Carolina; occurs inland on a local basis.
Native Habitat: Swamps and wet ground.
Growing ConditionsWater Use: High
Light Requirement: Part Shade
Soil Moisture: Moist
CaCO3 Tolerance: Medium
Soil Description: Clay, Loam, Sand
BenefitConspicuous Flowers: yes
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Natural Biodiversity - Johnstown, PA
Native Seed Network - Corvallis, OR
Web ReferenceWebref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resourcesUSDA: Find Bidens cernua in USDA Plants
FNA: Find Bidens cernua in the Flora of North America (if available)
Google: Search Google for Bidens cernua
MetadataRecord Modified: 2022-09-18
Research By: TWC Staff