September 01, 2020 12:50 Updated Follow If you have a tree that is showing signs of distress, insect damage or disease, your best sources of information are DNR's Division of Entomology (http://www.in.gov/dnr/entomolo/) and Purdue University's Diagnostic Lab (http://www.ppdl.purdue.edu/ppdl/). Related articles I want to construct a pond but don't know where to start, who should I contact? Are Indiana's forestlands disappearing? Need Help? Have problems? Who do I call? What Agency? How do I contact the Cabinet? I want to fish and hunt; look for mushrooms; camp; hike on a coal mine. Who do I need to contact?