Rhododendron 'April Song' (Mezitt): Tour of Fred Knippel's Garden

Rhododendron 'April Song' X 'Floda': Tour of Fred Knippel's Garden

Rhododendron 'Arctic Glow' (Lewis): Tour of Fred Knippel's Garden

Rhododendron 'Billie Bear' (Fetterhoff) habit: Tour of Fred Knippel's Garden

Rhododendron 'Billie Bear' (Fetterhoff): Tour of Fred Knippel's Garden

Rhododendron 'Billie Bear' (Fetterhoff): Tour of Fred Knippel's Garden

Rhododendron 'Bronze Unique' (Ghent): Tour of Fred Knippel's Garden

Rhododendron 'Caprice' (Glenn Dale): Tour of Fred Knippel's Garden

Rhododendron 'Catawbiense Album' (Waterer): Tour of Fred Knippel's Garden

Rhododendron 'Diadem' (Hachmann): Tour of Fred Knippel's Garden

Rhododendron 'Eliza Hyatt' (Schroeder): Tour of Fred Knippel's Garden

Rhododendron 'Gables's T4G' (Gable): Tour of Fred Knippel's Garden

Rhododendron 'George's Candy Cane' (Hibben): Tour of Fred Knippel's Garden

Rhododendron 'Ivory Coast' (Leach): Tour of Fred Knippel's Garden

Rhododendron 'Keiskelle Nuttell': Tour of Fred Knippel's Garden

Rhododendron 'Koromo Shikibu' (Kurume): Tour of Fred Knippel's Garden

Rhododendron 'Lady Rosebery' (Knap Hill): Tour of Fred Knippel's Garden

Rhododendron 'Lanny Pride': Tour of Fred Knippel's Garden

Rhododendron 'Nancy of Robinhill' (Robin Hill): Tour of Fred Knippel's Garden

Rhododendron 'Olga Mezitt' (Mezitt): Tour of Fred Knippel's Garden

Rhododendron 'Pillow Party' (Mezitt): Tour of Fred Knippel's Garden

Rhododendron 'Prune Danish' (Patterson): Tour of Fred Knippel's Garden

Rhododendron - unknown: Tour of Fred Knippel's Garden

Rhododendron keiskei 'Brown #89-102': Tour of Fred Knippel's Garden

Rhododendron kiusianum var. album: Tour of Fred Knippel's Garden