The causes of fungal disease on lawns vary. Any kind of stress weakens the plant making it more susceptible for disease. Stresses can include drought, improper mowing, compacted soil, over watering, and over-fertilizing can instigate an outbreak. In some cases, certain weather conditions, such as high humidity, can be enough to encourage fungus growth. If you notice signs of fungus on your lawn, take action swiftly. The longer you allow the fungus to grow, the more it will spread, the more damage it will do to your lawn, and the harder it will be to get rid of. How can you get rid of fungus on your lawn? Keep the following tips in mind.