Cinnabar Rhododendron
Rhododendron cinnabarinum
Ericaceae · broadleaf evergreen shrub · introduced
Last updated
An evergreen shrub native to Nepal, India (Sikkim), Bhutan, and southern Tibet, reaching 5 feet. Funnel-shaped flowers, 1 to 2 inches long, in variable colors from cinnabar red to orange, yellow, or purple depending on subspecies and provenance.
The tubular flower form and variable coloration make this a favorite among species collectors. Acidic, well-drained soil. Twenty-one diseases and 15 pests documented at the genus level. All parts contain grayanotoxins and are toxic if ingested.
Quick Facts
Root Colonization (Spring–Fall)
Infection at Bud Break
Apothecia Formation & Spore Release
Aecial Stage (Alternate Host)
+ 13 more — see full disease and pest lists below