Here is the seedlings file.
Botany
Poisonous Plants in the Commonwealth
This past summer has seen some rather spectacular cases of where people have run afoul of dangerous flora, the most recent of which was a college student after a runin with Giant Hogweed–the results were not good.
Information
The Virginia Tech Cooperative Extension group publishes a nice overview of toxic plants in the Commonwealth. It has some useful information in that all of us should be aware of.