Roseshell Azalea

Rhododendron prinophyllum

Ericaceae · broadleaf deciduous shrub · introduced

Last updated

A deciduous azalea native from southwestern Quebec through New England and the Ohio Valley to the southern Appalachians, ranging from 2 to 8 feet. Bright pink to purplish-pink flowers (rarely white) with a distinctive clove-like scent, petals distinctly pointed, stamens extending well beyond the petals.

Hardy in Zone 4a-8b. Full sun on acidic, well-drained soil. The clove-scented flowers are among the most fragrant of any native North American azalea. Twenty-one diseases and 15 pests documented at the genus level. All parts contain grayanotoxins and are toxic if ingested.

Plant Profile

Size & Form

Height
2–8 ft
Spread
2-8 ft

Site Requirements

Light
Full Sun
Soil Drainage
Well Drained To Moist
Soil pH
acidic
Water
Moderate
Hardiness
Zones 4a–8b

Ornamental Interest

Bloom Time
April to May
Fall Color
Brown
Origin
from southwestern Quebec
Watch for this season

Root Colonization (Spring–Fall)

Gall Development & Sporulation

Active Conidial Spread

RustHigh

Uredinial Stage (Summer)

+ 13 more — see full disease and pest lists below

Diseases: Regionally Documented (21)

Pests: Regionally Documented (15)

Data Maturity
Structured Multiple sources. Expert review underway.