Brown Lawn Diagnosis: Why Grass Dies & How to Revive It

A brown lawn isn't always dead. Dormancy, cultural issues, pests, and disease all cause browning — but the fix depends on the cause.

Top Causes & Solutions

• Drought: Grass goes dormant after 2–3 weeks without water; survives 4–6 weeks. Dead grass won't revive; dormant grass greens up in 3–4 weeks with regular irrigation.
• Thatch >¾ inch: Spongy layer blocks water, harbors fungi. Dethatch if thick.
• Mowing too short: Stresses grass, causes browning. Never remove >⅓ blade height; 3 inches ideal in summer.
• Improper watering: Frequent shallow watering = weak roots. Water deeply ~1 inch weekly.
• Insects (grubs): Tug test — damaged turf lifts easily. Treat if >6 grubs/sq ft.
• Salt damage: Near roads/driveways. Flush with water; reseed if severe.
• Dog urine: Yellow center, green ring. Dilute with water; train dog to designated spot.
• Fungus: Irregular spots. Identify type; improve cultural practices.

Healthy lawns resist problems. Consistent mowing, watering, fertilizing, and aerating prevent most browning.