Azalea Exbury Mt. Rainier

Mt. Rainier Exbury Azalea

Azalea Exbury ‘Mt. Rainier’ is a classic deciduous azalea admired for its pure white blooms and refined spring presence. Flowering in mid to late spring, the large, single flowers open crisp white, often with a faint creamy or pale yellow throat, creating a clean, luminous effect that brightens woodland and mixed shrub plantings.

The shrub develops a strong, upright to broadly rounded habit with fresh green deciduous foliage that emerges as flowering finishes, offering dependable structure and seasonal interest.

Key features
Width: 4–6 ft
Height: 5–7 ft
Flower color: Pure white with subtle creamy/yellow throat
Bloom time: Mid to late spring
Foliage: Medium green, deciduous
Form: Upright to broadly rounded shrub
Life cycle: Deciduous shrub

Growing conditions
Sun: Full sun to part shade (afternoon shade preferred)
Soil: Acidic, moist, well-drained; rich in organic matter
Water: Moderate; prefers evenly moist soil
Hardiness:



Zone Low: 5b



Zone High: 8a



Landscape use
Woodland and naturalized gardens
Mixed shrub borders
Spring specimen plantings
Mass plantings for bright contrast

Notes
Clean white flowers pair well with pastels, pinks, and yellows
Deciduous habit allows increased light penetration after bloom
Mulch to conserve moisture and protect shallow roots
Prune immediately after flowering if shaping is needed
Reliable, cold-hardy Exbury selection

Plant type

Deciduous Shrub, Flowering Shrub

Height

5-7'

Width

4-6'

Hardiness zones

5–8

Sunlight

Partial Shade

Growth rate

Slow

Bloom time

Late Spring, Mid Spring

Flower color

White

Leaf color

Green

Fall color

Red

Attracts

Bees hummingbirds, Butterflies

Soil

Acidic, Loamy well-drained, Sandy well-drained

Landscape use

Accent Plant, Container, Mass Planting

Shape

Broad Upright

Deer resistant

Yes

Drought tolerant

No