Pacific Rhododendron
Rhododendron macrophyllum
Also listed as Rhododendron californicum, Azalea californica
Also known as Coast Rhododendron, California Rhododendron, Western Rhododendron
Climate Match for your location
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A native Pacific Northwest evergreen shrub prized for its large, leathery leaves and clusters of pink to purple flowers that bloom in spring. It thrives in part shade and moist, acidic soil, making it ideal for woodland gardens and shaded borders.
Why grow it
Pacific rhododendron is a reliable native choice for Pacific Northwest woodland gardens where many non-native rhododendrons struggle with local pests and diseases. Unlike hybrid varieties, it requires no breeding-related vigor management and integrates directly into regional understory communities. Its large, glossy foliage provides winter interest where deciduous shrubs leave gaps, and it flowers somewhat later than many cultivars, reducing frost damage risk in variable springs.
Watch out for
In regions outside its native range, this plant may establish slowly and remain stressed if soil is not consistently moist and acidic. Drainage is as important as moisture; waterlogged soil leads to root rot faster than dry spells. Young plants benefit from a few seasons of shelter from harsh wind and full afternoon sun exposure.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Ericaceae
Native to the United States
Native Range
Pacific Northwest (Oregon, Washington, California)
Native to: California, Oregon, Washington
Seasonality
Bloom Season
Season of Interest
Shrub
Woody multi-stem plants at eye level.
Succession Role
Tolerances & Soil
Flood Tolerance
Deer Resistance
Inferred from USDA browse palatability
pH Range
Soil Texture
Establishment & Care
- Establishment
- Maintenance
- Propagation
A native Pacific Northwest evergreen shrub prized for its large, leathery leaves and clusters of pink to purple flowers that bloom in spring. It thrives in part shade and moist, acidic soil, making it ideal for woodland gardens and shaded borders.
Climate Match for your location
See how well Pacific Rhododendron grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
Pacific rhododendron is a reliable native choice for Pacific Northwest woodland gardens where many non-native rhododendrons struggle with local pests and diseases. Unlike hybrid varieties, it requires no breeding-related vigor management and integrates directly into regional understory communities. Its large, glossy foliage provides winter interest where deciduous shrubs leave gaps, and it flowers somewhat later than many cultivars, reducing frost damage risk in variable springs.
Watch out for
In regions outside its native range, this plant may establish slowly and remain stressed if soil is not consistently moist and acidic. Drainage is as important as moisture; waterlogged soil leads to root rot faster than dry spells. Young plants benefit from a few seasons of shelter from harsh wind and full afternoon sun exposure.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Ericaceae
Native to the United States
Native Range
Pacific Northwest (Oregon, Washington, California)
Native to: California, Oregon, Washington
Seasonality
Bloom Season
Season of Interest
Shrub
Woody multi-stem plants at eye level.
Succession Role
Tolerances & Soil
Flood Tolerance
Deer Resistance
Inferred from USDA browse palatability
pH Range
Soil Texture
Establishment & Care
- Establishment
- Maintenance
- Propagation
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