No common name

Rhododendron roxieanum var. oreonasters

Ericaceae · broadleaf evergreen shrub · introduced

Last updated

A compact evergreen shrub native to southern Tibet, northwestern Yunnan, and southwestern Sichuan, China, reaching 3 feet. Bell-shaped flowers, white flushed pink and spotted red-purple, about 1 inch across. Distinctive narrow, lance-shaped leaves with thick indumentum beneath.

Hardy in Zone 6a-8b. The narrow foliage and heavy indumentum give this species a markedly different texture from broad-leaved rhododendrons. Compact habit suits small-space and rock garden settings. Acidic, well-drained soil. 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
3 ft

Site Requirements

Hardiness
Zones 6a–8b

Ornamental Interest

Origin
China, southern Tibetand
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.