Pesticide Training Resources
2525 East Seneca Street • Tucson Arizona • 85716
Dr. Michael Pfeiffer
Weed Image Galleries
Select from the List of Image Galleries Below
More images will be added as time allows
A special thank you is extended to the dedicated and professional staff at the University of Arizona Plant Herbarium that identified plants that I could not.

Grass Characteristics
Morphological characteristics of grasses used for identification
Herbaceous Dicot Weeds
Dicots which lack woody parts and usually died back to ground level.
Invasive Plants NEW
Plants which are adaptable, aggressive and capable of ecological harm.
Monocot Weeds
Monocots which cause problems.
OPM Images
Review of weeds for those wanting to take OPM's weed exam.
Weeds in Turf
Plants which are problems in turf.
Woody Dicot Weeds
Dicots which have permanent stems above ground.
Scale for Images
Size of U.S. penney used as scale for many weed images.
© Pesticide Training Resources, 2008