Index

R. 'O my'

Rhododendron Hybrid

? X ?

Hybridized By: Henny, Rudolph. Brooks, Oregon, USA, 1980

R. 'O'Canada'

Rhododendron Hybrid

R. 'Lem's Cameo' X R. 'Jalisco Group X Crest x King of Shrubs'

Hybridized By: Lofthouse, J.G.. Vancouver, British Columbia, Canada, 1990

R. 'O'Harold'

Rhododendron Hybrid

R. 'Kammer's Ruffles' X R. 'Van Nes Sensation'

Hybridized By: Stockman, M.. Port Angeles, Washington, USA, 1982

R. 'O'Kell's Pink'

Azalea Hybrid

? X ?

Hybridized By: Carter's, 1976

R. 'O-fuji'

Azalea Hybrid

? X ?

Hybridized By: Ito, Ihei | Register from 1692 | Japan, 1692

R. 'O-guruma'

Azalea Hybrid

? X ?

Hybridized By: Ito, Ihei | Register from 1692 | Japan, 1692

R. 'O-kiri-murasaki'

Azalea Hybrid

? X ?

Hybridized By: Ito, Ihei | Register from 1692 | Japan, 1692

R. 'O-kirishima'

Azalea Hybrid

? X ?

Hybridized By: Ito, Ihei | Register from 1692 | Japan, 1692

R. 'O-koshimino'

Azalea Hybrid

? X ?

Hybridized By: Ito, Ihei | Register from 1692 | Japan, 1692

R. 'O-man'e''

Azalea Hybrid

? X ?

Hybridized By: Ito, Ihei | Register from 1692 | Japan, 1692

R. 'O-my-o'

Azalea Hybrid

R. 'Hino-crimson' X R. 'Salmon Elf'

Hybridized By: Pryor, R.L., 1978

R. 'Oakland'

Azalea Hybrid

R. kaempferi X ?

Hybridized By: Gartrell, R. D. | Highland Farms, Black Mountain, North Carolina | USA, 1935

R. 'Oakland X (unknown Indian azalea hybrid x Carol)'

Azalea Hybrid

R. 'Oakland' X R. 'unknown Indian azalea hybrid x Carol'

Hybridized By: Unknown

R. 'Oakton'

Rhododendron Hybrid

R. 'America' X R. degronianum ssp yakushimanum

Hybridized By: Schumacher, F.W., 1967

R. 'Oakton'

Azalea Hybrid

? X ?

Hybridized By: Ring, G.W., 1982

R. 'Oasis'

Rhododendron Hybrid

R. 'Fawn' X R. 'Dido Group'

Hybridized By: James Delbert W.. Eugene, Oregon, USA, 1953

R. 'Oban'

Rhododendron Hybrid

R. 'Grouse' X R. keiskei var ozawae 'Yaku Fairy'

Hybridized By: Cox, Peter A.. Glendoick, Scotland, 1976

R. 'Oberbürgermeister Janssen'

Rhododendron Hybrid

R. 'May Day Group' X R. 'Goldsworth Orange'

Hybridized By: Bruns, J Nursery. Bad Zwischenahn, Germany, 1952

R. 'Obergärtner Carl Marticke'

Azalea Hybrid

? X ?

Hybridized By: Weight, 1868

R. 'Obergärtner Karl Baumann'

Rhododendron Hybrid

R. 'Genoveva' X R. 'Hassan'

Hybridized By: Seidel, T.J.H.. Dresden, Germany, 1938

R. 'Obergärtner Robeneck'

Rhododendron Hybrid

R. hirtipes X R. oreodoxa var oreodoxa

Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1949

R. 'Oberhofgärtner E. Nietner'

Azalea Hybrid

R. molle ssp japonicum X R. molle ssp molle

Hybridized By: van Noordt, G., 1896

R. 'Oberon'

Rhododendron Hybrid

? X ?

Hybridized By: Veitch & Sons, R.. Exeter, Devon, England, 1867

R. 'Oberon'

Azalea Hybrid

? X ?

Hybridized By: Schneider, F., 1863

R. 'Oberon'

Azalea Hybrid

? X ?

Hybridized By: Koster & Co., 1920

R. 'Oberon Group'

Rhododendron Cultivar group

R. 'Barclayi Group' X R. 'Thomwilliams Group'

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1932

R. 'Oberpfälzer Sonnenschein'

Rhododendron Hybrid

R. 'Fabia Group x smirnowii' X R. 'Spätlese'

Hybridized By: Meltzer, H.L.. Neustadt a/d Waldnaab, Germany, 1984

R. 'Oberschlesien'

Rhododendron Hybrid

R. insigne X R. degronianum ssp yakushimanum

Hybridized By: Lüttge, G, 1966

R. 'Oberst von Kutzinsky'

Azalea Hybrid

? X ?

Hybridized By: Schulz, O. (head-gardener, Royal Porcelain Factory) | Berlin | Germany, 1880

R. oblancifolium

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Argyrophylla

R. 'Oborozuki'

Azalea Hybrid

? X ?

Hybridized By: Japan | no hybridiser registration, 1975

R. obscurum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Malayovireya

R. 'Obscurum'

Azalea Hybrid

? X ?

Hybridized By: Baumann, J. | Ghent | Belgium, 1866

R. 'Obsession'

Azalea Hybrid

R. 'Vespers' X R. 'Copperman'

Hybridized By: Vines,R.C. | Amelia Island, Florida | USA, 1990

R. obtusum

Natural Hybrid

R. kiusianum var kiusianum X R. kaempferi

Subgenus: Tsutsusi

R. obtusum

Species

R. obtusum

Species

R. 'Obtusum'

Rhododendron Hybrid

R. maddenii ssp maddenii X ?

Hybridized By: No hybridiser registered, 1869

R. 'Obtusum Group'

Azalea Hybrid

R. kiusianum var kiusianum X R. kaempferi

Hybridized By: Lindley, J., 1846

R. 'Occhio de Pernice'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. occidentale

Species

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Brandon Sunset'

Azalea Species Selection

Selected By: Magness, W.R. , Brandon, Oregon , USA, 1975

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'collectors nr. 2904'

Azalea Species Selection

Selected By: Cavender, R.W. , Red's Rhodies, Sherwood, Oregon , USA, 1995

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'collectors nr. 3704'

Azalea Species Selection

Selected By: Cavender, R.W. , Red's Rhodies, Sherwood, Oregon , USA, 2003

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Crescent City Double'

Azalea Species Selection

Selected By: Smith, B.M. & Mossman, F.D., 1966

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Crescent City Gold'

Azalea Species Selection

Selected By: Smith, B.M. & Mossman, F.D., 1966

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Double Dig Twelve'

Azalea Species Selection

Selected By: Smith, B.M. & Mossman, F.D., 1968

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Humboldt Picotee'

Azalea Species Selection

Selected By: Smith, B.M. & Mossman, F.D., 1968

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Langlois Milk Maid'

Azalea Species Selection

Selected By: Frisbie, L.F. , Tacoma, Washington , USA, 1965

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Leonard Frisbie'

Azalea Species Selection

Selected By: Mossman, F. D. , Vancouver, Washington , USA, 1968

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera

R. occidentale 'Miniskirts'

Azalea Species Selection

Selected By: Smith, B.M. & Mossman, F.D., 1976

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Pentanthera