Brown Patch Fungus- What It Is & How We Treat It

If you’re seeing tan or straw-colored patches that expand into circles or irregular “smoke rings,” you may be dealing with Brown Patch Fungus. In our climate (humidity + warm nights), conditions can turn favorable quickly and lawns like St. Augustine, Zoysia, and Bermuda can show symptoms almost overnight.

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What to look for

• Patches from dinner-plate size to several feet across, often with darker edges with a orangish-yellowish border (“smoke ring”).
• Blades pull up easily at the leaf sheath; grass looks matted or thinned.
• Areas worsen after heavy rain, frequent evening watering, or excess nitrogen.

Why it happens here

Brown Patch (caused by Rhizoctonia) thrives when nights stay warm, humidity is high, and leaf surfaces stay wet. That’s Southwest Florida’s wheelhouse—especially after rainy stretches or when irrigation timing keeps turf wet overnight.

How Perfection treats it (white-glove, start to finish)

1. On-site expert diagnosis. We confirm it’s Brown Patch (not insects or take-all) and map the affected zones.
2. Professional fungicide program. Targeted application with mode-of-action rotation to reduce resistance and protect surrounding turf.
3. Nutritional + cultural adjustments. We fine-tune fertility (avoid excess quick-release N), recommend proper mowing height, and correct moisture issues.
4. Follow-up and recovery. Brown Patch stops first; turf recovery follows with healthier new growth. We monitor so thin areas fill in.

What you can do this week

• Irrigation: Water deep and early morning only; avoid evening watering. Keep leaf blades dry overnight.
• Mowing: Mow high and sharp (don’t scalp). Bag clippings in heavily diseased spots for now.
• Traffic: Limit foot and pet traffic on affected areas.
• Fertilizer: Hold off on heavy nitrogen until disease is suppressed.
• Drainage/thatched areas: Let us assess; localized fixes prevent re-infection.

What to expect

• Visible spread should stop shortly after treatment; full cosmetic recovery may take several weeks depending on weather and turf density. Our team will guide next steps so the lawn bounces back thick and even.