The Best Northern Lights Series Azalea 2023. Rhododendron is a genus of more than 1,000 species and include azaleas. Web the northern lights azaleas are the arboretum's signature plant and are found throughout the grounds.
It is 3 to 4 feet high and wide. Members of the northern lights series include: The flowers are white with streaks of pink or purple and have a strong fragrance.
