Autumn Flame Maple Early Red Color: Overwatering in Heavy Soil

Mid-June Fall Color = Water Stress Signal

Two Autumn Flame maples (4.5" caliper) planted fall 2005. One shows red leaves in mid-June. Root ball soaking wet. Nursery suggested water issue.

Diagnosis: Saturated Root Zone

Clay soil + frequent irrigation (3×/week, 45 min) = anaerobic conditions. Roots suffocate → tree initiates early senescence (fall color) as survival response.

Fix

• Stop irrigation until soil dries to moist (not wet) at 6" depth.
• Water 1 inch/week MAX (pan test).
• Rain = skip watering.
• Mulch 3 inches to stabilize moisture.

Recovery

If caught early, tree re-greens. Prolonged saturation kills roots → permanent decline. Monitor new growth for normal color.