Azalea Harrell's Supreme #3 Care Guide

Introduction

Azalea Harrell's Supreme (Rhododendron 'Harrell's Supreme') is a vigorous, heat-tolerant azalea producing large, ruffled, deep rose-pink flowers in spring. It is a moderate perennial shrub that performs well in Florida's spring season and is one of the best-performing azaleas for the Southeast. Available in a #3 container.

Growing conditions

• Light: Partial shade to full sun; best flowering with morning sun and afternoon shade.
• Water: Moderate; keep soil consistently moist but not waterlogged.
• Soil: Acidic (pH 4.5 to 6.0), well-draining, organic-rich soil.
• Fertilizer: Acid-forming fertilizer such as azalea formula immediately after flowering.
• Season: Evergreen perennial shrub; blooms in spring in Florida.

Planting tips

Plant in a location with morning sun and afternoon shade. Mulch around the base with pine bark or pine straw to maintain soil acidity and retain moisture. Prune lightly immediately after flowering; never prune in fall or winter as this removes next year's flower buds. Avoid planting near concrete or limestone, which raises soil pH.

Troubleshooting

Yellowing leaves

Iron chlorosis from high soil pH. Lower pH with sulfur amendments and use acid-forming fertilizer.

Petal blight

Fungal disease causing brown, mushy flowers. Remove affected blooms and improve air circulation.

Lace bugs

Stippled, pale leaves with dark spots on undersides. Treat with insecticidal soap or neem oil.

Pet safety

Azaleas are toxic to pets and humans if ingested. All parts of the plant can cause vomiting, drooling, and in severe cases, heart problems. Keep away from dogs, cats, and children.

Quick care summary

Difficulty: Moderate. Light: Partial shade to full sun. Watering: Moderate, keep consistently moist. Humidity: Moderate to high. Pet safety: Toxic to pets and humans.