I had to have a tree cut down. The roots remain but mushrooms continue to grow and the surrounding grass is dead. The lawn has a substantial downward slant so there is no water problem. I do not know how to stop the mushroom growth.
Certified GKH Gardening Expert
The roots from the tree are likely decaying, and may be contributing to the mushrooms. But, the more likely culprit to the mushroom issue would be additional moisture in the soil. Now that the tree is no longer taking up water from the soil, the mushrooms have enough to live on. You can treat the area with a fungicide. That will help reduce the mushrooms. Reseeding the area with grass will help too. For additional help, follow the suggestions in this article: https://www.gardeningknowhow.com/lawn-care/lgen/eliminate-mushrooms-in-your-lawn.htm