Weeds were selected because of their abundance, ability to reproduce, compete, and spread rapidly, as well as those that are toxic to livestock or humans. An attempt was made to include a representative cross-section of the common agronomic, rangeland, horticultural, and non-cropland weeds of the western United States.

This publication summarizes scientific literature regarding the economic, environmental, and societal issues to range and wildlands caused by 16 key invasive plants in the United States. Estimates are also made related to their current area of infestation in the contiguous 48 states. This book is an excellent source that summarizes the impact invasive plants have on our quality of life. Plants reviewed include: Russian Knapweed, Musk Thistle, Diffuse Knapweed, Yellow Starthistle, Spotted Knapweed, Canada Thistle, Hawkweeds, Perennial Pepperweed, Leafy Spurge, Sericea Lespedeza, Purple Loosestrife, Downy Brome, Dalmation Toadflax, Tropical Soda Apple, and Tamarisk (saltcedar). There are no images inside the book.

Contains over 560 color photographs of 170 species! Includes submerged, floating leaf, and emergent aquatic weeds in rice production fields, water use systems, and wildland areas. The combination of color photos, text descriptions, keys, tables, and a glossary will increase the accuracy and speed of aquatic and riparian weed identification.

Contains over 3000 color photographs of 750 species! Includes weeds of landscapes, gardens, turf, crops, and non-crops areas, such as roadsides, wildlands, rangeland, utility sites. Only the true aquatic weeds are not included, but these can be found in the Aquatic and Riparian Weeds of the West. The combination of color photos, text descriptions, keys, tables, and a glossary will increase the accuracy and speed of weed identification.

This 177 page hard cover book contains information about the annual meetings, award winners (fellows, honorary members, and founders), and other information about the WSWS.

Edited by Eric M. Coombs, Janet K. Clark, Gary L. Piper, and Alfred F. Cofrancesco, Jr. 476 pages. Full-color photos. ISBN 0-87071-029-X. Paperback. In this book, leading experts review the discipline of biological control of invasive terrestrial and aquatic plants. Topics addressed include ecology, safety testing, non-target impacts, and the processes of identifying, introducing, distributing, and monitoring biological control agents.

Includes a 1 year WSWS membership

Includes a 1 year WSWS membership

Joe DiTomaso California Weeds Version 3.1 (2007) The Western Society of Weed Science is proud to introduce a comprehensive identification expert computer-based identification guide to weedy broadleaf and grass species in the western US. The two-CD pack contains over 4000 color photographs and illustrations of 754 broadleaf species and 231 grasses. The weed identification software is an interactive program that is easy to run and uses plant characteristics to identify weeds. In many cases it is possible to identify a plant specimen to one species or to a couple of choices using only vegetative characteristics, dried plant material, or even a portion of the plant.