| 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 |