Native to (or naturalized in) Oregon:
- Broadleaf deciduous shrub, an azalea, bushy habit, to 2.5 ft (~0.8 m) in 10 years, but it may be a small tree in the wild, branches erect. Leaves in whorls of 5 (occasionally a few more) at the ends of shoots, obovate to somewhat diamond-shaped, apex rounded, abrupt tip, to about 4-5 cm long and 2.5 cm wide, pale green, often with a purplish-red margin. Flowers white with green spots, solitary, or in 2s or 3s, produced with young leaves from the terminal bud, funnel-shaped, about 4 cm across, 10 stamens.
- -5°F, early middle; quality rating: 3/5/2-3 [flower / plant & foliage / performance; scale 1 (poor) - 5 (best)].
- Native to Japan.
- quinquefolium: leaves in fives.
- Rhododendron Species Foundation and Botanical Garden, Federal Way, Washington.