What is Lawn Fungus Control?

Lawn fungus control refers to the methods and techniques used to prevent and treat fungal infections in lawns. Fungal infections can cause significant damage to the grass, leading to brown patches, thinning, and even death of the turf. It is essential to implement effective lawn fungus control measures to maintain a healthy and vibrant lawn.

Types of Lawn Fungal Infections

There are various types of fungal infections that can affect lawns. Some of the most common ones include:

1. Dollar Spot

Dollar spot is a fungal disease that appears as small, circular patches on the lawn, resembling silver dollars. It is caused by the fungus Sclerotinia homoeocarpa and is most prevalent in warm, humid climates. Dollar spot can be controlled by proper lawn maintenance practices, such as regular mowing, watering, and fertilization.

2. Brown Patch

Brown patch is a fungal disease caused by the Rhizoctonia species. It typically affects cool-season grasses during hot and humid weather conditions. Brown patch appears as circular patches of brown or tan grass, ranging from a few inches to several feet in diameter. Proper lawn care, including adequate watering and proper mowing, can help prevent and control brown patch.

3. Snow Mold

Snow mold is a fungal disease that occurs in cold climates with prolonged snow cover. It appears as circular patches of matted, straw-colored grass. There are two types of snow mold: gray snow mold (Typhula spp.) and pink snow mold (Microdochium nivale). Proper lawn maintenance practices, such as raking leaves and removing snow piles, can help prevent snow mold.

4. Fairy Ring

Fairy ring is a fungal disease characterized by the appearance of circular rings of dark green grass or mushrooms. It is caused by various fungi, including Marasmius oreades and Lycoperdon spp. Fairy ring can be controlled by improving soil drainage, aerating the lawn, and applying fungicides.

Preventing Lawn Fungal Infections

Prevention is key when it comes to lawn fungal infections. Here are some tips to prevent fungal infections in your lawn:

1. Proper Lawn Care

Maintaining a healthy lawn through proper care practices is the first line of defense against fungal infections. This includes regular mowing, watering deeply and infrequently, and fertilizing appropriately. Avoid overwatering or watering in the evening, as it creates a favorable environment for fungal growth.

2. Good Air Circulation

Promoting good air circulation in your lawn can help prevent fungal infections. Avoid overplanting or overcrowding grass, as it restricts airflow. Regularly aerate the soil to improve drainage and reduce compaction.

3. Proper Fungicide Application

If preventive measures fail and your lawn becomes infected with fungi, applying fungicides can help control the infection. It is essential to choose the right fungicide for the specific fungal infection and follow the instructions carefully for effective control.

4. Regular Inspections

Regularly inspect your lawn for signs of fungal infections. Early detection allows for prompt treatment and prevents the spread of the infection. Look for symptoms such as discolored patches, thinning grass, or the presence of mushrooms.


In conclusion, lawn fungus control is crucial for maintaining a healthy and vibrant lawn. Understanding the different types of fungal infections and implementing preventive measures can help prevent and control these infections. Regular lawn care, good air circulation, proper fungicide application, and regular inspections are key components of effective lawn fungus control.