Burdock is biennial thistle in the Asteraceae family. Common Burdock grows wild in North America, Europe and Asia. This "weed" is regularly found growing alongside roads in the Chicago area and in cracks in the pavement. This is one of my favorite weeds growing in Chicago because the large lower leaves that can reach 18 inches in length and look very dramatic. I've taken to calling Burdock a "Ghetto Hosta" because I see them growing alongside property lines and I wonder if we're mimicking nature or if nature is mocking us.