No common name (R. auriculatum)

Rhododendron auriculatum

Ericaceae · broadleaf evergreen tree · introduced

Last updated

An evergreen tree species native to eastern Sichuan, western Hubei, and eastern Guizhou in China, ranging from 6 to 30 feet. Large fragrant funnel-shaped flowers up to 4 inches long, white to occasionally rosy pink with a greenish blotch at the base. One of the latest-blooming rhododendron species, flowering in mid to late summer.

The late bloom period (July to August) extends the rhododendron season well past the main spring display. Fragrant flowers are a bonus on a plant this large. Variable mature size; can become a substantial specimen tree in favorable conditions. 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
6–30 ft

Ornamental Interest

Origin
China, eastern Sichuan, western Hubei, eastern Guizhou
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.