Plant Health
Noxious Weeds Program |
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Weed Risk Assessments
- Acacia nilotica (L.) Willd. ex Delile Prickly Acacia (PDF; 92 Kb)
- Ageratina riparia (Regel) R. M. King and H. Robinson Mistflower (PDF; 62 Kb)
- Arctotheca calendula (L.) Levyns Capeweed (PDF; 94 Kb)
- Euphorbia terracina L. False Caper (PDF; 62 Kb)
- Inula britannica L. (British Elecampane) (PDF; 180 Kb)
- Onopordum acaulon L. Stemless Thistle (PDF; 53 Kb)
- Onopordum illyricum L. Illyrian Thistle (PDF; 57 Kb)
Weed-Initiated Pest Risk Assessment Guidelines for Qualitative Assessments
We welcome your opinion about these draft documents:
- View/Download 2004 version 5.3 (in Acrobat format) of Pest Risk Assessment Guidelines (PDF; 772 Kb)
Please send your comments and suggestions to:
Larry Fowler, Botanist/Risk Analyst
USDA, APHIS, PPQ
1730 Varsity Drive, Suite 300
Centennial Campus, NCSU
Center for Plant Health Science and Technology
Plant Epidemiology and Risk Analysis Laboratory
Raleigh, NC 27606
You can also send an E-mail.