This thread will have links to relevant sites posted on it. I've taken the links from the conversational threads and placed them all here. We'll lock it to new replies, but you can let me know if something might need to be added.
[quote="melody"]Each state should have a list of plants considered invasive. A search using the keywords: 'KY' (insert state you wish to search) and 'invasive plants' should turn up relevant and useful information.[/quote]