Louisiana State law banning a number of plants, including such deadly varieties as Mugwort, Lions tail and Damiana: http://www.legis.state.la.us/billdata/streamdocument.asp?did=722309

and their law that banned Salvia Divinorum, plus datura, galangal (yes, that's right), Calea and many more.

But don't feel left out, our glorious federal government is giving their own band of stupidity a red-hot go