October 10, 2019 01:12 Updated Follow Call at least two full business days in advance. Remember that the call and service are free, and are required by law. Related articles How can I encourage renewable energy development in Indiana? Who do I contact to get information about a sick tree? What is the difference between the OUCC and the IURC? What are the rules about tree trimming? What are the best kinds of trees to plant to avoid interfering with power lines?