Leyland Cypress Browning: Watering Frequency Is the Likely Culprit

Why Are My Leyland Cypress Turning Brown?

Four adjacent trees show scattered browning from the outside in. Bagworms were sprayed and gone. Hot, dry Tennessee summer; watering attempted.

Core Issue: Improper Watering

Watering frequency, not volume, kills plants.

• Established in-ground plants need water only during prolonged dry spells.
• Weekly watering may be too often in cool/cloudy weather, too little in heat.
• Water deeply (1 inch) when needed; let soil dry between waterings.
• Never water late evening (promotes fungus).

Quick Test

Place a pan under the sprinkler; stop when 1 inch collects. Adjust schedule to weather, not calendar.