Diagnosing Yellowing Leaves on African Violets

Diagnosing Yellowing Leaves on African Violets

A yellow-flowered African violet that bloomed all summer suddenly developed yellowing leaves on the entire plant.

Common Causes

• Cold exposure: Temperatures below 60°F (15°C) cause yellowing.
• Cold water: Watering with cool water leaves permanent yellow/white spots.
• Nutrient deficiency: Lack of nitrogen or irregular fertilizing.
• Root issues: Overwatering, poor drainage, or root rot.
• Sudden changes: Repotting, location change, or fertilizer shift.

Steps to Identify the Problem

1. Check recent temperature exposure (drafts, cold windows).
2. Use only lukewarm water for watering.
3. Review fertilizing routine—use a balanced, urea-free fertilizer at 1/4 strength weekly.
4. Inspect roots: healthy roots are white and firm; brown/mushy roots indicate rot.

If the cause isn't clear, a photo can help with diagnosis. Most cases resolve once the stressor is corrected.