Rhododendron Index

R. 'Ubald Croux'

Rhododendron Hybrid

? x ?

Hybridized By: Croux & Fils

R. 'Ubald Croux'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Croux & Fils

R. 'Uchiwa-gasane'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Wada, K.

R. 'Uchu-no-hikari'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Japan

R. 'Uchu-no-tsuki'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Nuccio's Nurseries

R. 'Uelfe = Ülfe'

Azalea Hybrid

R. 'Noordtianum' x ?

Hybridized By: Arends,

R. 'Ugigomo-no-tsuki'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Japan

R. 'Ugo Fisch'

Evergreen Azalea Hybrid

R. yedoense var poukhanense x ?

Hybridized By: Frei-Glaus, E. & H.

R. 'Uguns'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Kondratovičs, Rihard

R. 'Ukamuse'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Japan

R. 'Uki-funei'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Greer, Harold E.

R. 'Ukigumo-no-tsuki'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Japan

R. 'Ulrike Jost'

Rhododendron Hybrid

R. 'Bellefontaine' x R. 'Lumina x Perlina'

Hybridized By: Hachmann, Hans

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R. ultimum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Ultrasleek'

Rhododendron Hybrid

R. 'Catalgla x Pink Twins' x R. 'Delp's Dream'

Hybridized By: Delp Weldon E.

R. 'Umatilla'

Deciduous Azalea Hybrid

R. 'Hugh Wormald' x R. 'Marion Merriman'

Hybridized By: Slonecker, H.J.

R. 'Umbellatum Album'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Verschaffelt, A. (Alexander)

R. 'Umpqua'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Slonecker, H.J.

R. 'Umpqua Chief'

Rhododendron Hybrid

R. 'Fabia Group' x R. 'Azor Group'

Hybridized By: James Delbert W.

R. 'Umpqua Chief x War Paint'

Rhododendron Hybrid

R. 'Umpqua Chief' x R. elliottii 'War Paint'

R. 'Umpqua Princess'

Rhododendron Hybrid

? x ?

Hybridized By: Sanders, George Merle

R. 'Umpqua Queen'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Schoneman, R.

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R. 'Una Mary'

Rhododendron Hybrid

R. 'Purple Splendour' x R. 'Van Nes Sensation'

Hybridized By: Stockman, M.

R. unciferum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. 'Uncle Arch'

Rhododendron Hybrid

R. 'Petra's Debut' x R. 'Mrs E C Stirling'

Hybridized By: Dosser, D.J.

R. 'Uncle Salmon'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Carlson's Gardens

R. 'Undine'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Morrison, B.Y.

R. 'Unelma'

Rhododendron Hybrid

? x ?

Hybridized By: Uosukainen, Marjatta, Dr. Mrs.

R. 'Unforgettable'

Rhododendron Hybrid

R. 'Anna' x R. 'Nestucca'

Hybridized By: Furman, R.A.

R. 'Ungerio Group'

Rhododendron Cultivar group

? x ?

Hybridized By: Magor, E.J.P.

R. ungernii

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Pontica

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R. ungernii 'Rachel Foster'

Rhododendron Species Selection

Selected By: Rothschild, Edmund Leopold de

R. 'ungernii x auriculatum'

Rhododendron Hybrid

R. ungernii x R. auriculatum

R. 'Ungetsu-no-hikari'

Evergreen Azalea Hybrid

? x ?

R. uniflorum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Uniflora

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R. uniflorum 'Dalkeith'

Rhododendron Species Selection

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R. 'Unique'

Rhododendron Hybrid

R. campylocarpum ssp campylocarpum x ?

Hybridized By: Slocock, Walter C.

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R. 'Unique'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Verschaffelt, L

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R. 'Unique Marmalade'

Rhododendron Hybrid

R. 'Orange Marmalade' x R. 'Unique'

Hybridized By: Davis, J.A.

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R. 'Unique x Leonardslee Luscombei'

Rhododendron Hybrid

R. 'Unique' x R. 'Leonardslee Luscombei'

R. 'University Place'

Rhododendron Hybrid

? x ?

Hybridized By: Minch, F.

R. 'Unknow Warrior x arboreum'

Rhododendron Hybrid

R. 'Unknown Warrior' x R. arboreum ssp arboreum

R. 'unknown Indian azalea hybrid x Carol'

Evergreen Azalea Hybrid

? x R. 'Carol'

R. 'Unknown Warrior'

Rhododendron Hybrid

R. 'Queen Wilhelmina' x R. 'Stanley Davies'

Hybridized By: van Nes C. B . & Sons

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R. 'Unknown Warrior x Ole Olson'

Rhododendron Hybrid

R. 'Unknown Warrior' x R. 'Ole Olson'

Hybridized By: Watson, E.M. Mrs. (Elsie)

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R. 'unnamed Whitney hybrid'

Rhododendron Hybrid

? x ?

Hybridized By: Whitney, William E.

R. 'Upbeat'

Rhododendron Hybrid

R. 'Midsummer' x R. 'Delp's Red Max'

Hybridized By: Delp Weldon E.

R. 'Upton'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Pratt, M.C.

R. 'UQ-1'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Aromi, E.J

R. urophyllum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Parishia