Brown Spot in Utah High Desert Lawn: Likely Fungus, Treat Organically

St. George, UT homeowner (high desert) sees expanding brown spot in established Bermuda lawn. Recent heavy rains? Cool, damp weather triggers fungal diseases.

Diagnosis: Brown Patch or Similar Fungus

Expanding circular brown spots in warm-season grass during damp conditions = fungal pathogen. Bermuda is susceptible.

Organic Fungicide Options

• Horticultural corn meal (large areas): 10 lbs/1,000 sq ft, water in deeply
• Corn meal tea (spot treatment): 1 cup/5 gal water, steep 30 min, strain, spray
• Baking soda spray (foliar): 4 tsp (1 rounded Tbsp) per gallon water, spray top & bottom of leaves

Bonus: corn meal foot soak treats athlete's foot and toenail fungus.

Prevent Recurrence

• Water deeply but infrequently—never daily
• Morning only—never evening
• Mow Bermuda at 1–1.5″ (not higher)
• Organic program: sugar, compost, corn gluten meal build disease-suppressive soil

Fungus exploits weak soil and poor watering. Fix the culture; the fungus disappears.