Summer Lawn Fungus Threats and Prevention

Florida’s intense summer heat and humidity create ideal conditions for a variety of lawn fungi to thrive. These microscopic organisms can rapidly transform a lush lawn into an unsightly eyesore. To safeguard your lawn, it’s crucial to understand these fungal threats and implement preventive measures.

Florida lawns are particularly vulnerable to several fungal diseases, including:

• Brown patch: Characterized by large, brown patches, this disease is caused by the Rhizoctonia solani fungus and flourishes in warm, humid conditions.
• Dollar spot: Featuring small, circular brown spots, this fungal disease is caused by Clarireedia jacksonii.
• Grey leaf spot: Primarily affecting cool-season grasses, this disease results in gray or brown leaf blades.
• Pythium blight: A destructive fungus capable of rapidly killing turfgrass, especially in hot, wet weather.
• Rust: Identified by orange or brown spots on grass blades, rust thrives in warm, humid conditions.
• Fairy rings: Caused by various fungi including Chlorophyllum spp., and other basidiomycete fungi, fairy rings often appear as circular or arc-shaped patches of dark green or yellow grass. They can also cause areas of dead grass due to competition with turf.

By understanding these fungal threats and implementing the following preventive measures, you can significantly reduce the risk of fungal infections and maintain a vibrant, green lawn throughout the summer:

Preventive Measures

• Proper Lawn Maintenance: Mow at the correct height for your grass type and use sharp mower blades to promote healthy growth and reduce fungal entry points.
• Water Wisely: While summer heat demands adequate watering, avoid overwatering. Deep, infrequent watering encourages strong root growth and reduces moisture on the grass blades.
• Improve Air Circulation: Trim overhanging branches and remove debris to enhance airflow and hasten grass drying.
• Fertilize Carefully: Excessive nitrogen can promote lush growth, which is more susceptible to fungal diseases. Use balanced fertilizers and follow recommended application rates.
• Monitor for Signs: Regularly inspect your lawn for signs of fungal diseases, such as discolored patches or unusual spots. Early detection is crucial for effective treatment.
• Consider Fungicides: In severe cases or as a preventive measure, apply a fungicide specifically designed for lawn diseases. Always follow label instructions carefully.

Additional Tip: Avoid walking on your lawn when it’s wet to prevent the spread of fungal spores.

Remember, Summer lawn fungus prevention is often more effective than treatment. By adopting these preventive measures, you can significantly reduce the risk of summer lawn fungus and enjoy a healthier, greener lawn. For professional lawn care advice and treatment options, contact Rockaway today.