Weeds of California and Other Western States
Joseph M. DiTomaso
Evelyn Healy
The California Weed Science Society is proud to sponsor the most comprehensive identification manual for weeds in the United States.
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.
In addition to the individual description of species or related species, the text also contains:
- shortcut identification tables to groups that share similar, unusual or relatively uncommon characteristics
- keys to grasses in both vegetative and reproductive stages of development.
- comparison tables for difficult to identify groups
- illustrations and glossary of terms
- bibliography of pertinent literature
- additional list of non-native plants that are naturalized in California
A valuable reference and field manual for weed control specialists, land managers, ranchers and farmers, gardeners, golf course superintendents, landscape professionals, and anybody interested in learning more about identification of important weeds found in the western United States.
This practical guide is a lavishly illustrated manual providing information on the identification and biology of several important weed species. Each species was researched to provide accurate information on the distribution, habitat, propagation and phenology, management considerations, and characteristics that allow distinguishing between similar or related species.
Yellow devil's-claw (Proboscidea lutea)
Parry's tarweed (Hemizonia parryi) seedling 
