Index

R. 'Plumb Perfect'

Rhododendron Hybrid

R. 'Julia Grothaus' X R. 'Purple Splendour'

Hybridized By: Vea, J.G., 1977

R. 'Plumosum'

Azalea Hybrid

? X ?

Hybridized By: Waterer, H. (Knaphill) | Woking, Surrey (Knaphill) | UK, 1851

R. 'Pluto'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Plüsch'

Rhododendron Hybrid

? X ?

Hybridized By: Seidel, T.J.R.. Dresden/Grüngräbchen, Germany

R. pocophorum var hemidartum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Neriiflora

R. pocophorum var pocophorum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Neriiflora

R. pocophorum var pocophorum 'Cecil Nice'

Rhododendron Species Selection

Selected By: Anne, Countess of Rosse and NT (Nymans), 1971

Subgenus: Hymenanthes
Section: Pontica
Subsection: Neriiflora

R. 'Pohjola's Daughter'

Rhododendron Hybrid

R. 'Cunningham's White' X R. smirnowii

Hybridized By: Uosukainen, Marjatta, Dr. Mrs.. Laukaa, Finland, 1992

R. 'Poignant'

Azalea Hybrid

? X ?

Hybridized By: Vines,R.C. | Amelia Island, Florida | USA

R. 'Poikela'

Azalea Hybrid

? X ?

Hybridized By: Gowen, J.R.

R. 'Point Arguello'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Point Defiance'

Rhododendron Hybrid

R. 'Anna' X R. 'Marinus Koster'

Hybridized By: Lem Halfdan. Seattle, Washington, USA, 1970

R. 'Polar Bear'

Rhododendron Hybrid

R. decorum ssp diaprepes X R. auriculatum

Hybridized By: Stevenson, J.B.. Ascot, Berkshire, England, 1926

R. 'Polar Bear'

Azalea Hybrid

R. 'Hexe' X R. 'Snow'

Hybridized By: USDA, Department of Agriculture | Beltsville, Maryland | USA, 1950

R. 'Polar Bear Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Unknown

R. 'Polar Sea'

Azalea Hybrid

? X ?

Hybridized By: Morrison, B.Y. | Pass Christian, Mississippi | USA

R. 'Polar Sea'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Polar Sea x Corinne Murrah'

Azalea Hybrid

R. 'Polar Sea' X R. 'Corinne Murrah'

Hybridized By: Unknown

R. 'Polar Star'

Rhododendron Hybrid

R. smirnowii X R. 'Doncaster'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1902

R. 'Polar Sun'

Rhododendron Hybrid

R. 'Polar Bear' X R. facetum

Hybridized By: Digby, Lord, 1939

R. 'Polarnacht'

Rhododendron Hybrid

R. 'Turkana' X R. 'Purple Splendour'

Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany, 1976

R. 'Policy'

Rhododendron Hybrid

? X ?

Hybridized By: Rothschild, L. de. Founder of Exbury Gardens, UK

R. 'Pollone'

Rhododendron Hybrid

? X ?

Hybridized By: Parco Burcina. Pollone, Biella, Italy

R. 'Pollux'

Rhododendron Hybrid

? X ?

Hybridized By: Firma Seidel, 1894

R. 'Polly Clarke'

Rhododendron Hybrid

? X ?

Hybridized By: George A.F.. Hydon Nursery, Godalming, Surrey, England

R. 'Pollyanna'

Azalea Hybrid

? X ?

Hybridized By: Guttormsen, W.L. | Greenwood Gardens, Canby, Oregon | USA

R. 'Polonaise'

Azalea Hybrid

? X ?

Hybridized By: Morrison, B.Y. | Pass Christian, Mississippi | USA

R. 'Polonaise'

Azalea Hybrid

? X ?

Hybridized By: Waterer, H. (Knaphill) | Woking, Surrey (Knaphill) | UK, 1971

R. poluninii

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Lanata

R. polyanthemum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. polyanthemum 'Sheila Collenette'

Rhododendron Species Selection

Selected By: unknown, 2007

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. polycladum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. polycladum Scintillans Group

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Lapponica

R. polylepis

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Triflora

R. 'Polynesian Girl'

Rhododendron Hybrid

R. 'Sweet Mystery' X R. 'Polynesian Sunset'

Hybridized By: Weeks, C.. Westgate Garden Nursery, Eureka, California, USA, 1995

R. 'Polynesian Sunset'

Rhododendron Hybrid

? X ?

Hybridized By: Whitney, William E.. Brinnon, Washington, USA, 1963

R. polyraphidoideum var montanum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. polyraphidoideum var polyraphidoideum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. 'Polārzvaigzne'

Azalea Hybrid

? X ?

Hybridized By: Kondratovičs, Rihard | Riga | Latvia, 1974

R. 'Pom Pom'

Rhododendron Hybrid

R. 'Katrina' X R. 'Lem's Cameo'

Hybridized By: Thompson, W. & M.

R. 'Pomegranate Splash'

Rhododendron Hybrid

R. 'Midnight Mystique' X R. 'Magenta Sky'

Hybridized By: Fujioka, Frank. Whidbey Island, USA, 1992

R. pomense

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Taliensia

R. 'Pomp'

Rhododendron Hybrid

R. 'Lem's Goal' X R. 'Skipper Hal'

Hybridized By: Stockman, M.. Port Angeles, Washington, USA, 1994

R. 'Pompadour'

Azalea Hybrid

? X ?

Hybridized By: Waterer, H. (Knaphill) | Woking, Surrey (Knaphill) | UK, 1956

R. pontica var autumnalis

Species

R. ponticum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. ponticum 'Album'

Rhododendron Species Selection

Selected By: Lefevre, 1837

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. ponticum 'Aucubifolium'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. ponticum 'Cheiranthifolium'

Rhododendron Species Selection

Selected By: Unknown

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. ponticum 'Coerulescens'

Rhododendron Species Selection

Selected By: Loddiges, C. & Sons , Hackney, London , England, 1826

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

R. ponticum 'Elegantissimum'

Rhododendron Species Selection

Selected By: Lefevre, 1837

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica