Azalea, Rosy Lights Overview Category: Shrubs Common Name: Azalea, Rosy Lights Botanical Name: Rhododendron 'Rosy Lights' Sun Exposure: Full sun Height: 4-5 ft. Spread: 5-6 ft. See notes | Back to shrubs Notes 'Rosy Lights' is a dark rose-pink. A spectacular display of fragrant flowers are produced in late May or early June. Flower buds are winter hardy to -45°F. From the University of Minnesota.