Salvia is legal in most states. I live in Illinois and they recently passed a law that goes into effect in January 08 that makes it illegal. But I figure, a lot of people have never even heard of it, so even though it will soon be illegal I don't think anyone will be getting their houses raided over it anytime soon. Most people can't even identify it, so you could probably grow it in your front yard and have no problems.

Anyways, enough rambling. I don't think it can kill you. And other stuff that's legal can. It's all about personal responsibility and common sense.