Plantae > Tracheophyta > Magnoliopsida > Asterales > Asteraceae > Bidens > Bidens cernua

Bidens cernua (nodding bur-marigold)

Synonyms:

Wikipedia Abstract

Bidens cernua is a plant species in the sunflower family, widespread across much of Eurasia and North America. It is commonly called nodding beggarticks or nodding bur-marigold, Bidens cernua sometimes grows as high as 400 cm (160 inches) tall in favorable conditions. The leaves are sessile with coarsely-toothed margins. The name "cernua" means "nodding," or "hanging ." This refers to the fact that the flower heads are sometimes oriented horizontally or downwards. The plant does best in wet habitats such as swamps, marshes, and flood plains. \n* 1796 illustration \n*
View Wikipedia Record: Bidens cernua

Attributes

Bloom Period [1]  Late Summer
Drought Tolerance [1]  Low
Fire Tolerance [1]  Low
Frost Free Days [1]  85 days
Fruit/Seed Abundance [1]  High
Fruit/Seed Begin [1]  Summer
Fruit/Seed End [1]  Fall
Growth Form [1]  Single Crown
Growth Period [1]  Spring, Summer, Fall
Growth Rate [1]  Rapid
Leaf Type [1]  Deciduous
Lifespan [2]  Annual
Propagation [1]  Seed
Regrowth Rate [1]  Slow
Root Depth [1]  8 inches (20 cm)
Seed Spread Rate [1]  Rapid
Seed Vigor [1]  High
Seeds Per [1]  43324 / lb (95513 / kg)
Shape/Orientation [1]  Erect
Structure [4]  Herb
Vegetative Spread Rate [1]  None
Flower Color [1]  Yellow
Foliage Color [1]  Green
Fruit Color [1]  Purple
Fall Conspicuous [1]  Yes
Flower Conspicuous [1]  Yes
Height [2]  26 inches (.67 m)
Hardiness Zone Minimum [1]  USDA Zone: 11 Low Temperature: 40 F° (4.4 C°) → 50 F° (10 C°)
Light Preference [3]  Mostly Sunny
Soil Acidity [3]  Neutral
Soil Fertility [3]  Rich
Soil Moisture [3]  Wet
Water Use [1]  High
Screening - Summer [1]  Moderate
Screening - Winter [1]  Porous

Ecoregions

Protected Areas

Predators

Aphis consona (water lily aphid)[5]
Campiglossa absinthii[5]
Dioxyna bidentis[5]

Consumers

Parasitized by 
Podosphaera fusca[6]

External References

USDA Plant Profile

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1USDA Plants Database, U. S. Department of Agriculture
♦ 2PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats, M. O. Hill, C. D. Preston & D. B. Roy, Biological Records Centre, NERC Centre for Ecology and Hydrology (2004)
♦ 3ECOFACT 2a Technical Annex - Ellenberg’s indicator values for British Plants, M O Hill, J O Mountford, D B Roy & R G H Bunce (1999)
♦ 4Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 5Biological Records Centre Database of Insects and their Food Plants
♦ 6Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0