Mushrooms have their advantages and disadvantages. As food, they can be delicious. Out in the wild, however, mushrooms can be a nuisance. Some are poisonous and others can ruin the aesthetics of a beautiful lawn. Here are some ways to stop mushrooms from growing.
Don't water your lawn. Mushrooms grow best where there is a damp area filled with moisture. A moist lawn provides the right condition for the mushroom to grow. If you're not watering the lawn, the mushroom problem will go away once the soil dries out.
Cut away tree branches. Mushrooms grow in shaded areas.
Get rid of rotten wood. Rotten wood might be hiding underground, dig that wood out to keep mushrooms from growing there.
Use a fungicide. You can get a general purpose fungicide at a hardware store in the fertilizer section. Baking soda can also be used as a fungicide. Mix 2 tablespoons of baking soda per gallon of water. Spray the mixture at the first sight of new mushroom growth.
Add lime. Mushrooms grow on an acid soil. Lime will sweeten the soil and get rid of the mushrooms. You can get lime pellets at a garden store to add to the mushrooms and the soil.