WSU Clark County Extension

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P.J.M. Rhododendron

Scientific name: Rhododendron spp. P.J.M.

Type:Evergreen shrubs
Plant Requirements
Zone:4 to 8
Sun:Partial shade
Plant Characteristics
Height:6 ft
Width:6 ft
Bloom:Winter flowers
Bloom Time:February
Bloom Color:Lavender
Additional Characteristics



Wildlife value

Description P.J.M Rhododendron is probably the most adaptable and easiest to grow of all the many different rhododendron species or cultivars. It is best known for its late winter bloom.

P.J.M. Rhododendron is a broadleaf evergreen shrub that typically grows to a height of 4’-6’ in a compact, rounded and rather neat shape. Leaves are arranged in an alternate fashion, are simple, and small (1”-2.5” long). They are elliptic in shape and have a leathery texture. During the winter the leaves can take on marked mahogany- purplish color before returning to their green summer color. If the leaves are crushed they have an aromatic scent.

This species blooms in February in the Pacific Northwest, which is very early in the gardening season. The flowers have a bright lavender color when open. No fruit are set.

This rhododendron variant prefers well-drained organic soils. It can withstand cold and harsh sites however. For best results plants will do best in partial shade.

Phytophthora root rot and root weevils are always problems on rhododendrons.
For assistance, contact Dr. Charles Brun (, (360) 397-6060 5701
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