+18 Northern Lights Azalea Varieties 2023. Foliage turns red in late summer. These azaleas are hardy to zone 4.
The most hardy azalea varieties are in the “northern lights” series, introduced by the university of minnesota in the 1980’s. Web the hardiest of azaleas, smothered in showy fragrant pink flowers in spring before the leaves, compact upright habit; Web white flowers with a yellow blotch.
