Rhododendron
Rhododendron mucronulatum
Ericaceae · broadleaf deciduous shrub · introduced
Last updated
A broadleaf deciduous shrub reaching 4 to 8 ft tall and wide, among the earliest rhododendrons to bloom. Flowers appear on bare branches in late winter to early spring before leaves emerge, creating a striking display of rosy-purple to lavender-pink color. Native to northeastern Asia.
Full sun on acidic, well-drained to moist soil. Slow growth rate. The very early bloom period is both its greatest asset and its vulnerability: flowers are susceptible to late frost damage. Twenty-one diseases and 15 pests documented at the genus level. All parts 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