Purdue's Invasive Species Workshop

Invasive Plants: What's the big deal?  Learn how to identify both native and nonnative invasive plants; discover the impacts on the environment, wildlife habitat, and your checkbook; learn why prevention, early detection, and rapid response are vital in the control of invasive plants; gain a better understanding of the various methods used to control them effectively; and learn about financial and technical resources that can be a help. Workshop is free.
Purdue's website has many interesting workshops to choose from.