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The IDNR headquarters at 1 Natural Resources Way in Springfield will resume normal operations on Monday, June 15 following severe storms late last week that caused a lengthy power outage. The department appreciates everyone's patience and understanding. 

Governor JB Pritzker Illinois.gov Contact IDNR DNR A to Z

Tree Health Issues

General Tree Health Videos

​How to Identify Common Tree Diseases by NMSUACES; 6:02 minutes; Uploaded on Feb 12, 2010 Trees can have many different problems ranging from diseases to garden pests. Learn how to identify some of the most common tree problems.  From the Southwest Yard & Garden series.  

Removing Cytospora Canker from Plums by Oklahoma Gardening; 3:46 minutes; Published on Aug 29, 2014 8/30/14-In this segment, Sara Wallace, Student Intern at The Botanic Garden at Oklahoma State University, demonstrates how to remove cytospora canker from fruit trees.