Fungi adheres to the plant, steals food from and/or deposits toxic substances in the cells of the plant.
Some types of disease controls are granular chemicals while others are liquids.
Homeowners who use a mixture of grasses have a better chance of their lawn surviving a disease as most diseases attack one specific type of grass.
Common types of lawn fungi are snow mold, leaf spot and dollar spot.
Snow Mold attacks grass any time from late fall to early spring. Grass turns a reddish color or tan to gray. It can destroy small areas or complete lawns.
Leaf Spot results in brown or black spots on leaves and can occur through a wet, cool fall, winter and spring season. Thinning of the lawn may not be noticeable, but leaf activity is quite pronounced.
Dollar Spot starts in mid-spring and/or when weather is moist and cool. Damaged spots are a bleached straw color. A cobweb-like growth is a sign the fungus is active.