Andrea Williams, Vegetation Ecologist of the Marin Municipal Water District presents a plan for dealing with the many invasive plants in the Tomales Bay Watershed. She defines the difference between exotic and native species, the types of weeds She explains plans for dealing with all the Broom, etc. Invasive weeds impact local land value, fire dynamics, etc. She shows how the weeds got here to begin with and how you can prevent them. Books and Websites are shared for learning more about these plants.