Creamy white flowers with a yellow blotch on the upper petal, strongly fragrant, opening in late spring. Rhododendron Northern Hi-Lights grows 4 to 5 feet tall and wide in part sun to part shade, hardy from Zone 4 through Zone 7.
The two-tone effect gives it more interest than a plain white azalea, and the fragrance is the strongest in the series.
For most of the last century, gardeners north of Zone 5 could grow an azalea but rarely see it flower, since the plant survived while the buds froze. Northern Lights changed that. Buds hardy to 30 below mean the display arrives every spring, not just after a mild winter. The series has grown to a dozen or so selections in white, pink, orange, red, and yellow, all deciduous, most of them fragrant, and all blooming in mid to late spring after the frost that catches earlier azaleas.
This is a deciduous azalea, so the leaves drop in fall after turning burgundy. Acidic soil is necessary, roughly pH 4.5 to 6.0, and it takes less sun than most of the series.