Noxious Weed Links
Weeds are defined as plants that interfere with management objectives in a certain
area during a certain period of time. Weeds are described as "noxious" when they
are exotic (non-native) and are known to negatively impact agriculture, navigation,
fish, wildlife, or public health. Other terms used are invasive plant species,
introduced plant species, or non-indigenous plant species. Introduced from other
regions, noxious weeds can spread rapidly and alter important ecosystem services at
a site. Below are a list of websites that provide helpful and relevant information
on such invasive plant species for both Arizona and the United States.
Exotic Plant Information Clearinghouse
Cooperative effort among the U.S.
Geological Survey, the National Park Service and Northern Arizona University to
organize comprehensive information on exotic plant species in the southwest on
one web location. Database of weed species is searchable by scientific or by common
L.D. and G.B.Ruyle. 1996. Noxious weeds
A disaster looking for a place to
happen in Arizona!! The University of Arizona Cooperative Extension peer-reviewed
- Arizona Noxious Weeds List
- USDA Forest Service Invasive Species Program
Covers invasive diseases, insects, plants and aquatic species.
- Invasive Species
Archive of images related to invasive, introduced or exotic species, most
in the public domain. Particular emphasis on environmental education.
- Natural Resources Conservation Service (NRCS) web sites:
Natural Resource Conservation Service
Arizona Natural Resource Conservation Service
- BLM Weeds Website
- National Invasive Species Council website (NISIC)
Information and news on intergovernmental work related to the science of invasive
species issues. Provides helpful information identification, assessment, and eradication
efforts for invasive species
- APHIS/PPQ Invasive Species and Pest Management
National Agricultural Library Invasive Species
Gateway to Federal
efforts concerning invasive species.
National Plant List
Database System at the University of Montana Although the database is specifically
for five northwestern states, much of the management information on this web site
is applicable to other areas. Site contains noxious weed listings for all states
in US and some areas in Canada.
Carolina State University Aquatic Weed
Information on aquatic plants,
such as hydrilla (Hydrilla verticillata) and giant salvinia (Salvinia molesta),
which have begun to invade Arizona waterbodies and waterways.