Genus Azalea Species x Cultivar 'Golden Lights' Common Name 'Golden Lights' Deciduous Azalea Patent ID Height 4 to 6 Feet Spread 4 to 6 Feet Habit Large, rounded shrub. Moderate growth rate. Zone 4 to 8 Culture Full sun to partial shade. Flower Large fragrant, golden yellow flowers. May. Flower Color Golden Yellow Foliage Medium to dark green. Very high mildew resistance. Deciduous. Categories: Azalea Deciduous Shrub Description The ‘Northern Lights’ series was developed at the University of Minnesota for extreme cold hardiness and excellent flowering.