The black walnut tree, also called Eastern black walnut, is native to the eastern half of the U.S. The University of Wisconsin's Herbarium at the Cofrin Center for Biodiversity in Green Bay cites the black walnut as a native tree in the southernmost three tiers of counties in the state.
About this Author
Chicago native Laura Reynolds has been writing for 40 years. She attended American University (D.C.), Northern Illinois University and University of Illinois Chicago and has a B.S. in communications (theater). Originally a secondary school communications and history teacher, she's written one book and edited several others. She has 30 years of experience as a local official, including service as a municipal judge.