What Fungus Kills Lawns? A Guide to Identification and Treatment
As a lawn owner, it’s unsettling to notice patches of fungus-infested grass on your otherwise lush and healthy lawn. Fungal diseases are a common problem for lawn enthusiasts, and it’s essential to identify the species responsible for the damage. In this article, we’ll explore the most common fungi that kill lawns and provide guidance on treatment and prevention.
Direct Answer: What Fungus Kills Lawns?
Several species of fungus can infect lawns and cause significant damage. However, the most common one is Dollar Spot (Sclerotinia homoeocarpa). This fungus is the most widespread and destructive species, affecting over 60% of lawns across North America.
How Fungus Kills Lawns
Fungal diseases typically infect lawns when environmental conditions are favorable for their growth. Excessive moisture, wet soil, and poor air circulation create an ideal environment for fungal spores to germinate and spread. These spores can be found in the soil, infected grass blades, and on surrounding surfaces.
Fungal Diseases That Kill Lawns
Here are the most common fungal diseases that affect lawns:
Rust Lawn Disease (Puccinia spp.)
Rust is characterized by orange-yellow spores, appearing on blades and creeping into the soil. Treatment involves fungicides and soil improvements.
Brown Patch (Rhizoctonia solani)
This fungus causes circular patches with yellow or brown centers and reddish-brown margins. Treatment involves fungicides, improving air circulation, and reducing nitrogen levels.
Dollar Spot (Sclerotinia homoeocarpa)
This fungus causes small, round, grayish or yellowish spots on infected grass blades. Treatment involves fungicides, improving soil drainage, and reducing shade.
Fungicides for Lawn Fungus Treatment
Fungicides can be applied to infested areas to control and eliminate fungal diseases. These chemicals can be found in granular, liquid, or systemic forms. The following are some common active ingredients used in fungicides:
• Chlorothalonil: Fungicide used to treat fungal diseases, including Rust, Brown Patch, and Dollar Spot.
• Myclobutanil: Fungicide effective against fungal diseases, such as Rust and Dollar Spot.
• BENomyl: Fungicide used to treat various fungal diseases, including Dollar Spot and Brown Patch.
Tips for Fungal Lawn Care
To prevent and treat fungal diseases, consider the following tips:
- Maintain proper lawn care practices, including proper watering, mowing, and fertilization.
- Remove infected grass to prevent spore spread and further damage.
- Apply fungicides at the recommended rates and frequency.
- Aerate and dethatch the lawn to improve soil drainage and air circulation.
- Improve soil quality by adding organic matter and adjusting pH levels.
Conclusion
Fungal diseases can quickly damage and kill lawns. Recognizing the signs of infestation and taking prompt action is crucial for effective treatment. By understanding the various fungal species that affect lawns and following proper lawn care practices, you can keep your lawn healthy and lush.
Additional Resources:
Feel free to reach out for more information or advice on addressing fungal diseases in your lawn.