Index

R. heliolepis var heliolepis

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Heliolepida

R. heliolepis var oporium

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Heliolepida

R. 'Hell's Fire'

Azalea Hybrid

? X ?

Hybridized By: Childers, A.A & M.

R. 'Hella's Favorite'

Rhododendron Hybrid

? X ?

Hybridized By: Vaartnou, H.

R. 'Hellikki'

Rhododendron Hybrid

? X ?

Hybridized By: Uosukainen, Marjatta, Dr. Mrs.. Laukaa, Finland, 1974

R. 'Hellmut Vogel'

Azalea Hybrid

R. 'Ambrosianum' X R. 'Erich Danneberg'

Hybridized By: Stahnke, O. | Sassenburg | Germany, 1967

R. 'Hello Dolly'

Rhododendron Hybrid

R. 'Fabia' X R. smirnowii

Hybridized By: Lem Halfdan. Seattle, Washington, USA, 1974

R. hellwigii

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. helodes

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Helsinki University'

Rhododendron Hybrid

R. brachycarpum ssp tigerstedtii X ?

Hybridized By: Uosukainen, Marjatta, Dr. Mrs.. Laukaa, Finland, 1974

R. 'Heman Howard'

Rhododendron Hybrid

? X ?

Hybridized By: Cowles, J.C.. Stow, MA (superintendent of Dexter Estate 1959-1967), USA, 1967

R. hemitrichotum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Scabrifolia

R. hemsleyanum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Fortunea

R. 'hemsleyanum x ungernii'

Rhododendron Hybrid

R. hemsleyanum X R. ungernii

Hybridized By: No hybridiser registered

R. henanense ssp henanense

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Campylocarpa

R. henanense ssp lingbaoense

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Campylocarpa

R. 'Hendrik's Kanarie'

Vireya Hybrid

R. 'Satans Gift x Flamenco Dancer' X R. 'Vladimir Bukovsky'

Hybridized By: Van Oost, H, 2002

R. 'Henri Wille'

Azalea Hybrid

? X ?

Hybridized By: Haerens & Wille, 1929

R. 'Henriette Sargent'

Rhododendron Hybrid

R. catawbiense X ?

Hybridized By: Waterer, H. (Knaphill). Woking, Surrey (Knaphill), UK, 1890

R. 'Henry Coe'

Rhododendron Hybrid

? X ?

Hybridized By: Dexter, C.O.. Sandwich, MA, USA, 1943

R. 'Henry's Red'

Rhododendron Hybrid

? X ?

Hybridized By: Mezitt, E.V.. Weston Nurseries, Hopkinton, Massachusetts, USA, 1970

R. 'Henryanum'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. henryi var henryi

Species

Subgenus: Azaleastrum
Section: Choniastrum

R. henryi var pubescens

Species

Subgenus: Azaleastrum
Section: Choniastrum

R. 'Heol Breizh'

Rhododendron Hybrid

R. 'Karen Triplett' X R. 'Nelda Peach'

Hybridized By: Le Duigou, L., 2003

R. 'Her Majesty'

Rhododendron Hybrid

R. arboreum ssp arboreum X

Hybridized By: Veitch & Sons, R.. Exeter, Devon, England, 1889

R. 'Herbert'

Azalea Hybrid

R. yedoense var poukhanense X R. 'Hexe'

Hybridized By: Gable, J.B. | Stewartstown, Pennsylvania | USA, 1931

R. 'Herbert Tönjes'

Rhododendron Hybrid

R. wardii var wardii X ?

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

R. 'Herbert x Girard's Hot Shot'

Azalea Hybrid

R. 'Herbert' X R. 'Girard's Hot Shot'

Hybridized By: No hybridiser registered

R. 'Herbert x Girard's Hot Shot X Sandra Ann'

Azalea Hybrid

R. 'Herbert x Girard's Hot Shot' X R. 'Sandra Ann'

Hybridized By: No hybridiser registered

R. 'Herbstfeuer'

Rhododendron Hybrid

R. 'Mrs R.S. Holford' X R. dichroanthum ssp dichroanthum

Hybridized By: Nagel, W. (Walter). Bretten, Baden, Germany, 1970

R. 'Herbstfreude'

Rhododendron Hybrid

R. 'Hachmann's Ornament' X R. 'Furnivall's Daughter'

Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany, 1969

R. 'Herbstgruss'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Herbstzauber'

Rhododendron Hybrid

R. 'Guyens's Fashing' X R. 'Marrakesch'

Hybridized By: Guyens, H.J.A., 1994

R. 'Here's Howe'

Rhododendron Hybrid

? X ?

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

R. 'Heritage Campfire Peach'

Rhododendron Hybrid

? X ?

Hybridized By: Cowles, J.C.. Stow, MA (superintendent of Dexter Estate 1959-1967), USA, 1960

R. 'Heritage Nicholas'

Rhododendron Hybrid

R. 'Loderi Venus' X ?

Hybridized By: Sanders, Graham. Christchurch, New Zealand, 2002

R. 'Heritage Pastel Perfume'

Rhododendron Hybrid

? X ?

Hybridized By: Cowles, J.C.. Stow, MA (superintendent of Dexter Estate 1959-1967), USA, 1960

R. 'Heritage Snow Ruby'

Rhododendron Hybrid

? X ?

Hybridized By: Cowles, J.C.. Stow, MA (superintendent of Dexter Estate 1959-1967), USA, 1960

R. 'Herkules'

Rhododendron Hybrid

R. campanulatum ssp campanulatum X ?

Hybridized By: Firma Seidel, 1894

R. 'Hermann'

Rhododendron Hybrid

R. 'Kaiser Wilhelm' X R. 'Agnes'

Hybridized By: Seidel, T.J.R.. Dresden/Grüngräbchen, Germany, 1906

R. 'Hermann Backhus'

Rhododendron Hybrid

? X ?

Hybridized By: Backhus, A.W.. Edewecht-Kleefeld, Germany, 1947

R. 'Hermann Klusmann'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Hermann Nitzschner'

Rhododendron Hybrid

R. brachycarpum ssp brachycarpum X R. catawbiense

Hybridized By: Seidel, T.J.R.. Dresden/Grüngräbchen, Germany, 1918

R. 'Hermann Seidel'

Azalea Hybrid

? X ?

Hybridized By: Van Houtte, L. B. (Louis Benoit) | Gentbrugge | Belgium, 1891

R. 'Hermann Seidel Group'

Rhododendron Cultivar group

? X ?

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

R. 'Hermann Stahnke'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Hermann's Superbum'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Herme'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown

R. 'Hermelin II'

Rhododendron Hybrid

? X ?

Hybridized By: Seidel, T.J.R.. Dresden/Grüngräbchen, Germany, 1918

R. 'Hermes'

Azalea Hybrid

? X ?

Hybridized By: Seidel, T.J.H. | Dresden | Germany, 1928