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Family: asteraceae
Common name(s): Nodding Bur-marigold
Hardiness ratings: USDA zone 3 - 9 
General resources
Links for Bidens cernua
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 3-9)
 (1 photo)
- Garden.org - Community-assembled plant profile (7 photos)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations. (5 photos)
- Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (10 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (6 photos)
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (7 photos)
- Southwest Colorado Wildflowers - Photos and botanical information about the species/genus. (13 photos)
- Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.
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