Azalea 'Helen Curtis'(Shammarello Hybrid)

Evergreen Azalea, Helen Curtis Azalea, Shammarello Hybrid Azalea

Azalea ‘Helen Curtis’ is a graceful evergreen Glenn Dale azalea admired for its soft lavender-pink flowers with gentle darker accents and a reliable spring display. Blooming in mid spring, the flowers blanket the plant with refined color that blends beautifully into woodland and foundation settings.

This cultivar develops a dense, rounded habit with fine-textured, dark green evergreen foliage, providing year-round structure and dependable performance in the landscape.

Key features


Width: 4–6 ft



Height: 4–6 ft



Flower color: Lavender-pink with subtle darker markings



Bloom time: Mid spring



Foliage: Dark green, evergreen leaves



Form: Dense, rounded mound



Life cycle: Evergreen shrub



Growing conditions


Sun: Part shade (morning sun, afternoon shade preferred)



Soil: Acidic, moist, well-drained; rich in organic matter



Water: Moderate; consistent moisture preferred



Hardiness: USDA Zones 6b–9a



Azalea Zone: Zone 6b (Glenn Dale classification)



Landscape use


Foundation plantings



Woodland and shade gardens



Evergreen mass plantings



Mixed shrub borders



Containers in protected locations



Notes


Glenn Dale hybrids are known for improved cold tolerance



Generally deer resistant



Mulch to keep roots cool and evenly moist



Avoid hot afternoon sun to prevent leaf scorch



Prune immediately after flowering if shaping is needed



 

Plant type

Broadleaf Evergreen

Height

3'

Width

3'

Hardiness zones

5–9

Sunlight

Partial Shade

Growth rate

Slow

Bloom time

Late Spring, Spring, Winter

Flower color

White

Leaf color

Green

Fall color

Green, Yellow

Soil

Loamy well-drained, Sandy well-drained

Landscape use

Container, Foundation, Hedge, Mass Planting

Bark

Smooth

Fruit

Yes

Drought tolerant

No