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Premature Fall Color in Red Maples: Watering Deficit Despite Irrigation

Central NC red maples (20 ft) turning light green/yellow/red in late July. Irrigating 3×/week per restrictions; grass is green. Cause?

Diagnosis: Inadequate Deep Watering

Maples are drought-sensitive. Trees need ~1 inch water/week. Grass needs less. Your sprinkler may wet only surface soil. Test: place pan under tree, run sprinkler until 1 inch collects. Adjust runtime accordingly.

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