| Rating | Plant | Thumbnail |
| Rhododendron 'Pacific Sunset'
Rhododendron | |
| Azalea 'Pallas'
Rhododendron |  |
| Robin Hill Azalea 'Papineau'
Rhododendron
Hybridized by Robert Derby Gartrell
Additional info: ('Glacier' x 'Swansong') | |
 | Rhododendron 'Parker's Pink'
Rhododendron
Hybridized by Dexter |  |
| Dwarf Rhododendron 'Passioinate Purple'
Rhododendron | |
| Robin Hill Azalea, Dwarf Azalea 'Pat Erb'
Rhododendron
Hybridized by Robert Derby Gartrell
Additional info: ('Louise Gable' x 'Tama-giku') x 'Tama-sugata' | |
| Rhododendron 'Patricia Marie'
Rhododendron
Hybridized by Braffladt |  |
| | Rhododendron 'Patty Bee'
Rhododendron
Hybridized by Berg, 1970 |  |
| | Rhododendron 'Pearce's American Beauty'
Rhododendron |  |
| Rhododendron 'Peeping Tom'
Rhododendron |  |
| Robin Hill Azalea 'Peg Hugger'
Rhododendron
Hybridized by Robert Derby Gartrell
Additional info: ('Louise Gable' x 'Tama-giku') x ('Kaigetsu' x 'Carol') | |
| | Rhododendron 'Penheale Blue'
Rhododendron
Hybridized by N. R. Colville, 1974 |  |
| | Azalea 'Percy Wiseman'
Rhododendron |  |
| | Azalea 'Persil'
Rhododendron
Hybridized by Slocock Nursery, UK
Additional info: (Slocock hybrid) |  |
| Rhododendron 'Peste's Fire Light'
Rhododendron |  |
| Blue Rhododendron 'Peter Kerr'
Rhododendron augustinii |  |
| Robin Hill Azalea, Dwarf Azalea 'Peter Pooker'
Rhododendron
Hybridized by Robert Derby Gartrell
Additional info: ('Louise Gable' x 'Tama-giku') x 'Shinnyo-no-tsuki' | |
| Rhododendron 'Phetteplace'
Rhododendron degronianum subsp. yakushimanum |  |
| | Rhododendron 'Phyllis Korn'
Rhododendron |  |
| | Azalea 'Pink and Sweet'
Rhododendron |  |
| Azalea 'Pink Cascade'
Rhododendron | |
| Japanese Azalea, Kyushu Azalea 'Pink Clusters'
Rhododendron kiusianum |  |
| Korean Azalea, False Rosebay 'Pink Discovery'
Rhododendron yedoense var. poukhanense |  |
| Pink Swamp Azalea, Swamp Honeysuckle, Clammy Azalea 'Pink Mist'
Rhododendron viscosum | |
| Azalea 'Pink Pancake'
Rhododendron nakaharae | |
| Azalea 'Pink Ruffles'
Rhododendron |  |
| Maddenia Rhododendron 'Pink Trumpet'
Rhododendron | |
| | Rhododendron 'PJM'
Rhododendron
Hybridized by Mezitt
Additional info: (aka P.J.M., PJMezitt) |  |
| Rhododendron 'PJM Compacta'
Rhododendron |  |
| | Rhododendron 'PJM Elite'
Rhododendron
Hybridized by Weston Nurseries, 1987 |  |
| Rhododendron 'PJM Pink Delight'
Rhododendron
Hybridized by Reardon, 2007
Additional info: (PP18328; aka P.J.M. Pink Delight) |  |
| Rhododendron 'Pleasant White'
Rhododendron |  |
| | Rhododendron 'Pohjola's Daughter'
Rhododendron
Additional info: (Pohjolan Tytar) |  |
| | Rhododendron 'Point Defiance'
Rhododendron
Hybridized by Lem, 1970 |  |
| Rhododendron 'Polarnacht'
Rhododendron | |
| | Dwarf Korean Azalea 'Poukhanense Compacta'
Rhododendron yedoense |  |
| Rhododendron 'Praecox'
Rhododendron |  |
| | Rhododendron 'President Roosevelt'
Rhododendron |  |
| Rhododendron 'Pretty Baby'
Rhododendron |  |
| | Southern Indian Hybrid Azalea, Indica Azalea 'Pride of Mobile'
Rhododendron |  |
