How to Prevent Lawn Fungus in Bend, Oregon

Lawn fungus is surprisingly common in Bend — despite our dry climate. The combination of cool nights, morning dew, and evening irrigation creates ideal conditions for fungal disease. Here's how to prevent it and what to do if you already have it.

The Most Common Lawn Fungi in Bend

• Necrotic ring spot — circular dead rings, most common in Kentucky bluegrass
• Brown patch — irregular brown areas, often appears in hot, humid weather
• Dollar spot — small silver-dollar-sized spots that merge into larger patches
• Powdery mildew — white powdery coating on blades, usually in shaded areas
• Snow mold — gray or pink patches that appear after snow melts in spring

Prevention: The Most Important Steps

The single most important thing you can do to prevent lawn fungus in Bend is to water in the early morning, not in the evening. Wet grass overnight is the primary cause of fungal disease in our climate.

Other key prevention steps: avoid overwatering (1–1.5 inches per week is enough), mow at the right height (3–3.5 inches in summer), and don't apply excessive nitrogen fertilizer in summer, which promotes lush growth that's more susceptible to disease.

Treatment Options for Lawn Fungus in Bend

If you already have lawn fungus, treatment depends on the type and severity. Mild cases can sometimes be corrected by adjusting watering practices. Moderate to severe cases typically require fungicide application.

We offer lawn fungus diagnosis and treatment throughout Bend and Central Oregon. Our technicians can identify the specific fungus affecting your lawn and recommend the most effective treatment.