The species name, artemisiifolia, is given because the leaves were thought to bear a resemblance to the leaves of Artemisia, the true wormwoods.
The plant is native to: North America across Canada, the eastern and central United States, the Great Plains, and in Alaska; the Caribbean on Cuba, Hispaniola, and Jamaica; and South America in the southern bioregion (Argentina, Chile, Paraguay, Uruguay), the western bioregion (Bolivia, Peru), and Brazil. The distribution of common ragweed in Europe is expected to expand northwards in the future
It produces 2–4 mm obconic green to brown fruit. It sets seed in later summer or autumn. Since the seeds persist into winter and are numerous and rich in oil, they are relished by songbirds and upland game birds.
Common ragweed, Ambrosia artemisiifolia, is a widespread invasive species, and can become a noxious weed, that has naturalized in: Europe; temperate Asia and the Indian subcontinent; temperate northern and southern Africa and Macronesia; Oceania in Australia, New Zealand, and Hawaii; and Southwestern North America in California and the Southwestern United States.
Common ragweed is a very competitive weed and can produce yield losses in soybeans as high as 30%. Control with night tillage reduces emergence by around 45%. Small grains in rotation will also suppress common ragweed if they are overseeded with clover. Otherwise, the ragweed will grow and mature and produce seeds in the small grain stubble.
Its wind-blown pollen is additionally highly allergenic.
As of 2005[update] several herbicides were effective against common ragweed, although resistant populations were known to exist. In 2007 several Ambrosia artemisiifolia populations were glyphosate resistant, exclusively in the USA.
As of 2014[update] the ragweed leaf beetle, Ophraella communa, has been found south of the Alps in southern Switzerland and northern Italy. Many of the attacked plants were completely defoliated. Zygogramma suturalis was introduced to Russia, and then China, for ragweed control, with very positive initial results.
SMARTER is a European interdisciplinary network of experts involved in the control of ragweed, health care professionals, aerobiologists, ecologists, economists, and atmospheric and agricultural modellers.
|Wikimedia Commons has media related to Ambrosia artemisiifolia.|
- GRIN—Germplasm Resources Information Network; Global Web v 188.8.131.52: report on Ambrosia artemisiifolia . accessed 26 August 2016.
- Calflora: Ambrosia artemisiifolia
- NPIN−Lady Bird Johnson Wildflower Center Native Plant Information Network: Ambrosia artemisiifolia
- Bonap.net: Biota of North America Program county distribution map (2014)
- Hokche, O., P. E. Berry & O. Huber. (eds.) 2008. Nuevo Catálogo de la Flora Vascular de Venezuela 1–859. Fundación Instituto Botánico de Venezuela, Caracas.
- Jørgensen, P. M., M. H. Nee & S. G. Beck. (eds.) 2015 en adelante. Catalogo de las plantas vasculares de Bolivia (adiciones).
- Rasmussen, Karen; Thyrring, Jakob; Muscarella, Robert; Borchsenius, Finn (16 March 2017). "Climate-change-induced range shifts of three allergenic ragweeds ( L.) in Europe and their potential impact on human health". PeerJ. 5: e3104. doi:10.7717/peerj.3104.
- Jepson eFlora (TJM2): Ambrosia artemisiifolia . accessed 26 August 2016.
- Newscientist.com: "North American ragweed to bring autumn allergy misery to Europe."
- Flora of North America Vol. 21 Page 15 Ambrosia artemisiifolia Linnaeus, Sp. Pl. 2: 988. 1753.
- Flora of China Vol. 20-21 Page 876, 877 豚草 tun cao Ambrosia artemisiifolia Linnaeus, Sp. Pl. 2: 988. 1753.
- Altervista.org: Flora Italiana − Ambrosia artemisiifolia L.
- Atlas of Living Australia: Ambrosia artemisiifolia (Annual Ragweed)
- INRA - The common ragweed
- Circabc.europa.eu; Final report: "EC Assessing and Controlling the spread and the effects of Common ragweed in Europe"
- A. Davis, K. Renner, C. Sprague, L. Dyer, D. Mutch (2005). Integrated Weed Management. MSU.
- Stephen B Powles (April 2008). "Evolved glyphosate-resistant weeds around the world: lessons to be learnt". Pest Management Science Pest Management Science. 64 (4): 360–365. doi:10.1002/ps.1525.
- Müller-Schärer, H (2014). "Ophraella communa, the ragweed leaf beetle, has successfully landed in Europe: fortunate coincidence or threat?". Weed Research. 54: 109–119. doi:10.1111/wre.12072.
- Cf. www.ragweed.eu. The project runs from 2013 to 2017 in the frame of the EU programme COST. More than 120 participants from 33 countries are participating in 2013.
- BRIT.org: Native American Ethnobotany Database on Ambrosia artemisiifolia . accessed 26 August 2016.
- Huang, Jianwei W.; Chen, Jianjun; Berti, William R.; Cunningham, Scott D. (1997). "Phytoremediation of Lead-Contaminated Soils: Role of Synthetic Chelates in Lead Phytoextraction". Environmental Science & Technology. 31: 800–805. doi:10.1021/es9604828.
- Essl, F.; Biró, K.; Brandes, D.; Broennimann, O.; Bullock, J.M.; Chapman, D.S.; Chauvel, B.; Dullinger, S.; Fumanal, B.; Guisan, A.; Karrer, G. (2015). "Biological flora of the British Isles: Ambrosia artemisiifolia". Journal of Ecology. 103 (4): 1069–1098. doi:10.1111/1365-2745.12424.
- Calflora Database: Ambrosia artemisiifolia (Annual ragweed, Common ragweed, Low ragweed) — non-native/naturalized species in California.
- Jepson Manual eFlora (TJM2) treatment of Ambrosia artemisiifolia — non-native/naturalized species in California.
- UC CalPhotos gallery: Ambrosia artemisiifolia