Index

R. 'Hawaii Sunrise'

Vireya Hybrid

R. 'macgregoriae x laetum' X R. saxifragoides

Hybridized By: Moyles, E.W.. Oakland, California, USA, 1999

R. 'Hawaiian Holiday'

Rhododendron Hybrid

R. 'Senorita' X R. 'Autumn Gold'

Hybridized By: Smith, B.M.. Brittenhill Nursery, Kent, WA, USA, 1967

R. 'Hawaiian Tropic'

Rhododendron Hybrid

R. 'Naselle' X R. 'Unique Marmalade'

Hybridized By: Imrie, S.T., 1997

R. 'Hawfinch'

Azalea Hybrid

? X ?

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

R. 'Hawk'

Rhododendron Hybrid

R. wardii var wardii X R. 'Lady Bessborough Group'

Hybridized By: Rothschild, L. de. Founder of Exbury Gardens, UK, 1940

R. 'Hawk Falcon'

Rhododendron Hybrid

? X ?

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

R. 'Hawk Group'

Rhododendron Cultivar group

R. wardii var wardii X R. 'Lady Bessborough Group'

Hybridized By: Rothschild, L. de. Founder of Exbury Gardens, UK, 1940

R. 'Hawk Group x China Group'

Rhododendron Hybrid

R. 'Hawk Group' X R. 'China Group'

Hybridized By: No hybridiser registered

R. 'Hawk Group x Idealist Group'

Rhododendron Hybrid

R. 'Hawk Group' X R. 'Idealist Group'

Hybridized By: No hybridiser registered

R. 'Hawk Group x Idealist Group X Wheatley'

Rhododendron Hybrid

R. 'Hawk Group x Idealist Group' X R. 'Wheatley'

Hybridized By: No hybridiser registered

R. 'Hawk Kestrel'

Rhododendron Hybrid

? X ?

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

R. 'Hawk Merlin'

Rhododendron Hybrid

? X ?

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

R. 'Hay Lee'

Rhododendron Hybrid

? X ?

Hybridized By: Dosser, D.J.. Lower Wilmot, Tasmania, Australia

R. 'Haymo'

Rhododendron Hybrid

? X ?

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

R. 'Haze'

Rhododendron Hybrid

R. hodgsonii X R. 'Muriel'

Hybridized By: Loder, Sir Giles. Cuckfield, West Sussex, England, 1954

R. 'Hazel'

Rhododendron Hybrid

R. bureavii X ?

Hybridized By: Greer, Harold E.. Eugene, Oregon, USA, 1959

R. 'Hazel Dawson'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Hazel Dawson x indicum'

Azalea Hybrid

R. 'Hazel Dawson' X R. indicum

Hybridized By: No hybridiser registered

R. 'Hazel Fisher'

Rhododendron Hybrid

R. 'Mrs Lammot Copeland' X R. 'Mary Drennen'

Hybridized By: Larson, H.L.. Tacoma, Washington, USA, 1983

R. 'Head Honcho'

Rhododendron Hybrid

R. degronianum ssp yakushimanum 'Siouxon' X R. 'Mrs J G Millais'

Hybridized By: Smith, C.C. (Cecil). Newberg, Oregon, USA, 1983

R. 'Head Start'

Rhododendron Hybrid

? X ?

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA

R. 'Heads Up'

Azalea Hybrid

? X ?

Hybridized By: Aromi, E.J | Mobile, Alabama | USA

R. 'Headstrong'

Rhododendron Hybrid

? X ?

Hybridized By: Schram, B.

R. 'Heart and Soul'

Azalea Hybrid

? X ?

Hybridized By: Carlson's Gardens | (Bob & Janice Carlson), South Salem, New York | USA

R. 'Heart of Pineapple'

Vireya Hybrid

? X ?

Hybridized By: Moyles, E.W.. Oakland, California, USA, 1999

R. 'Heart Talk'

Rhododendron Hybrid

R. 'Ronald Otto Delp' X R. 'Weldy x Serendipity'

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA, 1992

R. 'Heart's Delight'

Rhododendron Hybrid

R. 'Mrs A.T. de la Mare' X R. 'Britannia'

Hybridized By: Manenica, Mrs A.. Aberdeen, Washington, USA, 1964

R. 'Hearthfire'

Rhododendron Hybrid

R. 'Atrier Group' X ?

Hybridized By: Hardgrove, D.L., 1960

R. 'Hearthglow'

Azalea Hybrid

? X ?

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

R. 'Hearts' Afire'

Azalea Hybrid

? X ?

Hybridized By: Aromi, E.J | Mobile, Alabama | USA

R. 'Heat Wave'

Rhododendron Hybrid

R. 'The Honourable Jean Marie de Montague' X R. 'Leo Group'

Hybridized By: Greer, Harold E.. Eugene, Oregon, USA, 1982

R. 'Heathcote'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Heather Moth'

Rhododendron Hybrid

R. 'Britannia' X ?

Hybridized By: Waterer (Bagshot). Surrey, England

R. 'Heather Young'

Rhododendron Hybrid

R. 'Vicki Reine' X R. 'Van Nes Sensation'

Hybridized By: Stockman, M.. Port Angeles, Washington, USA, 1989

R. heatheriae

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Falconera

R. 'Heatherside Beauty'

Rhododendron Hybrid

R. caucasicum X ?

Hybridized By: Street, F.J.. Heathermead Nursery, Woking, Surrey, England, 1953

R. 'Heatherwood'

Rhododendron Hybrid

? X ?

Hybridized By: Scott Arboretum

R. 'Heaven Scent'

Azalea Hybrid

? X ?

Hybridized By: Carlson's Gardens | (Bob & Janice Carlson), South Salem, New York | USA, 1985

R. 'Heaven Sent'

Rhododendron Hybrid

? X ?

Hybridized By: Delp Weldon E.. Harrisville, Pensylvania, USA

R. 'Heavenly'

Azalea Hybrid

? X ?

Hybridized By: Carlson's Gardens | (Bob & Janice Carlson), South Salem, New York | USA

R. 'Heavenly Scent'

Rhododendron Hybrid

R. fortunei ssp fortunei X ?

Hybridized By: Whitney, William E.. Brinnon, Washington, USA, 1973

R. 'Hebbel'

Rhododendron Hybrid

? X ?

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

R. 'Hebe'

Rhododendron Hybrid

? X ?

Hybridized By: Liebig, L.L.. Dresden, Germany

R. 'Hebe Group'

Rhododendron Cultivar group

? X ?

Hybridized By: Magor, E.J.P.. Lamellan, St. Tudy, Cornwall, England

R. 'Heca Group'

Rhododendron Cultivar group

? X ?

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

R. 'Hecla Group'

Rhododendron Cultivar group

R. thomsonii ssp thomsonii X R. griersonianum

Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1931

R. 'Hector'

Rhododendron Hybrid

? X ?

Hybridized By: Smith, W.D.. Spring Grove, Pennsylvania, USA

R. 'Hector'

Azalea Hybrid

? X ?

Hybridized By: Smith, W.D. | Spring Grove, Pennsylvania | USA

R. hedyosmum

Species

Subgenus: Rhododendron
Section: Pogonanthum

R. 'Hegel'

Rhododendron Hybrid

? X ?

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

R. 'Heide Hanish'

Rhododendron Hybrid

? X ?

Hybridized By: Glaser, K.