Pretty Sure This Is Milk thistle? Rate this:Share this:Share Share on X (Opens in new window) X Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Share on Facebook (Opens in new window) Facebook Share on LinkedIn (Opens in new window) LinkedIn Share on Reddit (Opens in new window) Reddit Like Loading... Related 1 Comment
revelgardener 
I wasn’t sure what it looked like, Wikipedia
http://en.wikipedia.org/wiki/Milk_thistle
had a picture that seems to match yours. For a quick read it seems to have medicinal uses, so it’s probably worth a little more research.