The Renz lab at the University of Wisconsin-Madison Agronomy Department and UW-Extension has a series of videos for the identification of invasive plants. These videos can be found at the new UW-Extension Weed Science website:
Currently there are 13 videos with 6 to 10 more planned for release this coming field season. The current species covered are:
- Black swallow-wort
- Bush honeysuckles
- Canada thistle
- Common tansy
- Creeping bellflower
- Dame's rocket
- Garlic mustard
- Hill mustard
- Leafy spurge
- Plumeless thistle
- Spotted knapweed
- Teasel
- Wild chervil
The UW-Extension Weed Science website also has a number of other resources. There are presentations, factsheets, links, and much more.