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Western Azalea

Rhododendron occidentale

Ericaceae · broadleaf · native

Western azalea is a deciduous rhododendron native to streamside and moist forest margins west of the Rocky Mountains. In May and June, the plant bears fragrant flowers that open white or soft salmon-pink, often with distinctive orange or red coloration present in the buds; flowers may feature subtle striping and a pale yellow blotch on the upper petal.

Western azalea blooms on previous season's growth, so prune selectively just after flowering concludes to preserve next year's buds. Provide partial shade to shade, moist well-drained acidic soil rich in organic matter, and shelter from harsh afternoon sun. Water consistently during establishment and during dry summers.

Quick Facts

Height
10 ft
Fall Color
Crimson, scarlet, yellow
Origin
Pacific Northwest native

Diseases (28)

Pests (21)

Cultivars (1)

Irene Koster
Common name: Irene Koster (Western) Azalea; Mature height: 4–6 ft