Find a explination of the problems caused by invasive weeds, browse an activities calendar, and access conference announcements.

International society promotes weed research shares newsletter articles, membership details and an events calendar.

Group from the Zoological Institute at the Russian Academy of Sciences in St. Petersburg, Russia. Find an illustrated alien species database.

Group based at the Univ. of Wales, Bangor provides summaries of invasive plants found in Jamaica and Tanzania.

Society provides a guide to weed research in Italy, past conference and workshop profiles and contact information.

Investigating phytopathogens, insect pests and weeds harmful to the local flora. Publications and botanical conference details are provided.

Group dedicated to plant pest management offers a guide to the weeds of Western Australia and conference announcements.

Overview of Western Australia's weed problem explains why invasive plants result in agricultural losses over $3.5 billion per year.