Fescue Decline from Overwatering: Correct Irrigation Practices

The Overwatering Problem

Watering fescue three times weekly for 10 minutes—common in many subdivision irrigation systems—creates ideal conditions for fungal diseases. Constant moisture prevents soil and foliage from drying, weakening grass and promoting pathogen activity.

Proper Watering Regimen

• Frequency: Once per week
• Amount: One inch per application
• Goal: Allow soil to dry between waterings

Why This Works

Deep, infrequent watering encourages deep root growth, making fescue more drought-tolerant and disease-resistant. Fungal pathogens are always present in soil; healthy grass naturally resists infection. Fungicides only mask symptoms—they don't address the underlying cultural problem.

Fall Renovation Plan

1. Adjust irrigation to weekly deep watering
2. Aerate compacted areas
3. Overseed thin spots in early fall
4. Apply starter fertilizer at seeding