Diagnosing Yellow Leaves on Outdoor Hibiscus in California

Diagnosing Yellow Leaves on Outdoor Hibiscus in California

Yellowing leaves on a California hibiscus can signal several issues:

• Underwatering: Increase to 1 inch deep soaking weekly.
• Poor soil fertility: Side-dress with composted cow manure.
• Overwatering/poor drainage: Soil must drain well; relocate if soggy.
• Seasonal dormancy: Reduced light in winter can cause temporary yellowing.

Assess watering and soil conditions first; adjust accordingly.