Rhododendron 'Cunningham's White' (R. caucasicum × R. ponticum var. album)
- Broadleaf evergreen shrub, 4 ft (1.2 m), compact, spreading. Leaves dark green, oblanceolate, 10 cm long. Flower buds flushed with pink, opening finally to pure white flowers with fine speckling of yellow-green or brown on the upper lobe, funnel-shaped, about 5 cm wide, clusters are lax and have about 8 flowers.
- -15o F, middle-late, quality rating 2/3/4 [flower / plant & foliage / performance; scale 1 (poor) - 5 (best)]. Often flowers in autumn. Tolerates slightly alkaline conditions and air pollution. Propagates easily from cuttings and sometimes used as a rootstock for other rhododendrons.
- Hybridizer: Cunningham (1850).
- Oregon State Univ. campus: southeast corner of the Memorial Union.