We often see lawns with mushrooms or doughnut rings of dying or dark green grass. These are referred to as "fairy rings." This publication includes information on how to control fairy rings in your lawn. (PDF Format Only)
Lawns and Other Turf Areas Chemical Weed Control.
Turf problems can be categorized as cultural (man-made), environmental or pest-related. Often two or more of these factors contribute to the problem.
Mushrooms in lawns and moldy foods can be health hazards for your dogs, according to LSU AgCenter veterinarian Dr. Steve Nicholson.
The LSU AgCenter and the LSU College of Agriculture