Tree Mulch <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Tree+Health">Tree Health</a> Environmental stress is the most damaging thing to trees - here is how to help. Waterloo Courier State Library of Iowa Black Hawk County Soil and Water Conservation District, Black Hawk County, Iowa.For questions about copyright, contact the State Library of Iowa at <a>http://www.statelibraryofiowa.org.&gt;</a> This item is protected by copyright and/or related rights. Your are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). <a href="http://rightsstatements.org/">http://rightsstatements.org</a> pdf eng Text; Clipping