I have brown spots and/or large dead patches of grass. What do I use to control the fungus or insect that is causing this damage in my lawn?
There are many fungi and insects that can cause symptoms like these as well as some other issues. Contact your local Extension Office. They may ask you to bring in a sample for examination. The sample should consist of about an 8 inch by 8 inch piece of sod with 2 to 3 inches of soil beneath. The sample should also be taken from the edge of the affected area so that both healthy and disease grass are present.