Welcome to our organization
The Society has been created by researchers studying the common ragweed plant.
The main cause of allergy and pollen asthma in North America and Central Europe is pollen from ragweed (Ambrosia) a widespread genus in the Asteraceae. In Europe short or common ragweed (A. artemisiifolia) is prevalent.
This situation requires a tight monitoring of he plant and the implement of strong control strategy involving not only farmers but also the staff managing natural areas, road sides, building- and gravel industries.
The destruction of many single plant foci may help reducing the number of seeds produced and may slow therefore the spreading of ragweed.
Copyright 2009-2017 International Ragweed Society.
All rights reserved.
Further info
MEMBERSHIPIf you would like to be a member, please fill in the membership form!

13th Basic Course
Fiskebäckskil, Sweden
From 17th to 24th of July 2017
Content, Registration, Accomodation
11th International Congress on Aerobiology
Parma, Italy
From 3rd to 7th of September 2018
Website of the congress
RECENT LITERATURE
Recent literature on common ragweed is presented here.
"Ambrosia the first international ragweed review No. 29 - Summary"
CONFERENCES
Recent and upcoming meetings where ragweed-related problems are discussed.
1. Pollen is in the air: invasive plants and allergy in our changing environment. Brussels on March 5-6th, 2015
2. 3rd International Ragweed Conference. April 3-4, 2014, Milan, Italy
3. Ragweed as invasive plant. August 6-10, 2011, Honolulu, Hawaii
4. Environmental and invasive weeds. October 2-7, 2011, Ascona, Switzerland
5. Ragweed in agri-environment, September 20-22, 2011, Budapest, Hungary
6. Second International Ragweed Conference. March 28-29, 2012, Lyon, France. The conference closing remarks are readable here.
6. 25th German Conference on Weed Biology and Weed Control. March 13-15, 2012, Braunschweig, Germany.
7. First European Ecocycles Conference. July 22-26, 2013, Palermo, Italy.
CONTROL MEASURES
Evaluated methods of ragweed control are listed here.
Ragweed pollen concentration map of Europe at the end of August is shown on this map.
Useful links
- RNSA, France
- European Weed Research Society
- Pollenindex, Hungary
- European Aerobiology Society
- L'Ambroisie
- Meteosuisse - pollen
- Polleninfo
- SMARTER - COST program of the EU
- Ambrosia (Switzerland)
- AFEDA
- European Ecocyles Society