Index

R. 'Strawberry Swirl'

Rhododendron Hybrid

? X ?

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

R. 'Strawberry Swirl'

Azalea Hybrid

? X ?

Hybridized By: Caldwell, H.A. Jr., 1978

R. 'Strawberry Wine'

Rhododendron Hybrid

R. 'Mrs Furnivall' X R. 'Peggie Roberts'

Hybridized By: Barlup, Jim. Bellevue, USA, 1989

R. 'Streaker'

Rhododendron Hybrid

? X ?

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

R. 'Streatley'

Rhododendron Hybrid

R. aberconwayi X R. degronianum ssp yakushimanum

Hybridized By: Crown Estate Commissioners. Windsor, Berkshire, England, 1964

R. stresemannii

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. strigillosum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Maculifera

R. 'Striking'

Rhododendron Hybrid

R. 'Calstocker Group' X R. 'Auguste van Geert'

Hybridized By: O'Rourke, H.. Burnie, Tasmania, Australia, 1989

R. 'Stromy'

Rhododendron Hybrid

R. degronianum ssp yakushimanum 'Koichiro Wada' X R. wardii var wardii

Hybridized By: Heft, L., 1974

R. 'Stuart Holland'

Rhododendron Hybrid

? X ?

Hybridized By: Vaartnou, H.

R. 'Stunner'

Azalea Hybrid

? X ?

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

R. 'Su-Lin'

Azalea Hybrid

? X ?

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

R. 'Suave'

Rhododendron Hybrid

R. edgeworthii X R. edgeworthii

Hybridized By: Liebig, L.L.. Dresden, Germany, 1863

R. suaveolens f roseum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. suaveolens f suaveolens

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Sub Zero'

Rhododendron Hybrid

R. degronianum ssp yakushimanum X R. aberconwayi

Hybridized By: Van de Ven K.. Olinda, Victoria, Australia, 1981

R. subansiriense

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Thomsonia

R. subarcticum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Ledum

R. subcerinum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. subcrenulatum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. subenerve

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. subestipitatum

Species

Subgenus: Azaleastrum
Section: Choniastrum

R. subflumineum

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. 'Sublime'

Rhododendron Hybrid

R. 'Ben Moseley' X R. 'Besse Howells'

Hybridized By: Hinerman, D.L.. Ann Arbor, Michigan, USA, 1975

R. subroseum

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Maculifera

R. subsessile

Species

Subgenus: Tsutsusi
Section: Tsutsusi

R. subulatum

Species

Subgenus: Rhododendron
Section: Rhododendron
Subsection: Ledum

R. subuliferum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. subulosum

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. succothii

Species

Subgenus: Hymenanthes
Section: Pontica
Subsection: Barbata

R. 'Suchu-ka'

Azalea Hybrid

? X ?

Hybridized By: Japan | no hybridiser registration

R. 'Sucre d'Orge'

Rhododendron Hybrid

R. 'September Song' X R. 'Fred Wynniat x Ring of Fire'

Hybridized By: Colombel, Marc. Menez-Rohou, Fouesnant, France, 1998

R. 'Sue Ann'

Rhododendron Hybrid

R. 'Lem's Cameo' X R. degronianum ssp yakushimanum 'Koichiro Wada'

Hybridized By: Brockenbrough, E.C. Bellevue, Washington, USA, 1990

R. 'Sue Conn'

Rhododendron Hybrid

R. 'Anna' X R. 'Lem's Cameo'

Hybridized By: Watson, E.M. Mrs. (Elsie). Kirkland, WA, USA, 1980

R. 'Sue Conn x Karen Triplet'

Rhododendron Hybrid

R. 'Sue Conn' X R. 'Karen Triplett'

Hybridized By: Unknown

R. 'Sue Conn x Karen Triplet X Marinus Koster x Lem's Goal'

Rhododendron Hybrid

R. 'Sue Conn x Karen Triplet' X R. 'Marinus Koster x Lem's Goal'

Hybridized By: Unknown

R. 'Sue Gunn'

Rhododendron Hybrid

R. 'Nova Zembla x yakushimanum' X R. 'Catalgla x Elizabeth Group'

Hybridized By: Craig, D.L.. Kentville, Nova Scotia, Canada, 1971

R. 'Sue Lissenden'

Rhododendron Hybrid

? X ?

Hybridized By: Van de Ven K.. Olinda, Victoria, Australia

R. 'Suede'

Rhododendron Hybrid

R. haematodes ssp haematodes X R. bureavii

Hybridized By: Judson, 1973

R. 'Suetsumu'

Azalea Hybrid

? X ?

Hybridized By: Unknown

R. 'Sugah Lump'

Rhododendron Hybrid

R. 'Lord Roberts' X R. 'Skipper Hal'

Hybridized By: Stockman, M.. Port Angeles, Washington, USA, 1992

R. 'Sugan'

Rhododendron Hybrid

? X ?

Hybridized By: Hübbers, K-H.. Kranenburg, Germany, 1990

R. 'Sugar and Spice'

Rhododendron Hybrid

? X R. 'Madame Masson'

Hybridized By: Bowhan, Tom and Emma. Eugene, USA, 1983

R. 'Sugar Daddy'

Rhododendron Hybrid

? X ?

Hybridized By: Waterer (Bagshot). Surrey, England

R. 'Sugar Pink'

Rhododendron Hybrid

R. 'Trude Webster' X R. 'Fawn x Queen o' the May Group'

Hybridized By: Greer, Harold E.. Eugene, Oregon, USA, 1960

R. 'Sugar Puff'

Rhododendron Hybrid

R. racemosum X R. minus Carolinianum Group

Hybridized By: Read, F., 2006

R. 'Sugared Almond'

Azalea Hybrid

? X ?

Hybridized By: Exbury | The Rothschild Estate, Hampshire | England, 1951

R. sugaui

Species

Subgenus: Rhododendron
Section: Vireya
Subsection: Euvireya

R. 'Suifu'

Azalea Hybrid

? X ?

Hybridized By: Japan | no hybridiser registration, 1987

R. 'Suigetsu'

Azalea Hybrid

? X ?

Hybridized By: Japan | no hybridiser registration, 1979

R. 'Suislaw Pioneer'

Rhododendron Hybrid

? X ?

Hybridized By: Unknown