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R. williamsianum

	Require Seed X Pollen in the Same Positions
	Require as seed parent
	Require as pollen parent

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R. 'Tibet' Rhododendron Hybrid R. 'Bismarck' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1966 More information and pictures
R. 'Vulcan's Bells' Rhododendron Hybrid R. 'Vulcan's Flame' X R. williamsianum Hybridized By: Lancaster, Ben, F.. Lackamas Gardens, Camas, Washington, USA, 1965 More information and pictures
R. 'Oudijk's Sensation' Rhododendron Hybrid R. 'Essex Scarlet' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany More information and pictures
R. 'Doctor H.C. Karl Förster' Rhododendron Hybrid R. 'Linswegeanum Group' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1952 More information and pictures
R. 'Jackwill' Rhododendron Hybrid R. 'Jacksonii' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945 More information and pictures
R. 'Bad Zwischenahn' Rhododendron Hybrid ? X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1968	More information
R. 'Brocade Group' Rhododendron Cultivar group R. 'Vervaeneanum' X R. williamsianum Hybridized By: Rothschild, L. de. Founder of Exbury Gardens, UK, 1934 More information and pictures
R. 'Pallidum Group' Rhododendron Cultivar group R. griffithianum X R. williamsianum Hybridized By: Aberconway, Lord. Bodnant, Tal-y-Cafn, Wales, 1926	More information
R. 'Lissabon' Rhododendron Hybrid R. 'Nova Zembla' X R. williamsianum Hybridized By: von Martin, V.. Rothenburg/Oberlausitz, Germany More information and pictures
R. 'Sea-Tac' Rhododendron Hybrid R. 'Moser's Maroon' X R. williamsianum Hybridized By: Larson, H.L.. Tacoma, Washington, USA, 1958 More information and pictures
R. 'Rose Point' Rhododendron Hybrid R. 'Dido Group' X R. williamsianum Hybridized By: Lem Halfdan. Seattle, Washington, USA, 1965 More information and pictures
R. 'Germania' Rhododendron Hybrid R. 'Antoon van Welie' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1956 More information and pictures
R. 'Maizauber' Rhododendron Hybrid R. traillianum var traillianum X R. williamsianum Hybridized By: Robeneck, H.. Westerstede, Germany, 1950	More information
R. 'Libelle' Rhododendron Hybrid R. 'Faggetter's Favourite' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945	More information
R. 'Hultschin' Rhododendron Hybrid R. insigne X R. williamsianum Hybridized By: Robeneck, H.. Westerstede, Germany, 1952 More information and pictures
R. 'Gartendirektor Rieger' Rhododendron Hybrid R. 'Adriaan Koster' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1947 More information and pictures
R. 'Humming Bird Group' Rhododendron Cultivar group R. haematodes ssp haematodes X R. williamsianum Hybridized By: Williams, John Charles. Caerhays, Cornwall, England, 1933 More information and pictures
R. 'Gartendirektor Glocker' Rhododendron Hybrid R. 'Doncaster' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1952 More information and pictures
R. 'Linda' Rhododendron Hybrid R. 'Britannia' X R. williamsianum Hybridized By: Boskoop. Research Center fo Arboreus Crops, Netherlands, 1968 More information and pictures
R. 'Robinette' Rhododendron Hybrid R. forrestii Repens Group X R. williamsianum Hybridized By: Aasland Nursery, 1990 More information and pictures
R. 'Alexander Steffen' Rhododendron Hybrid R. 'Britannia' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945	More information
R. 'Vinewood' Rhododendron Hybrid R. 'Sham's Ruby' X R. williamsianum Hybridized By: Forster, R.R., 1964 More information and pictures
R. 'Adriaan Koster x williamsianum' Rhododendron Hybrid R. 'Adriaan Koster' X R. williamsianum Hybridized By: No hybridiser registered	More information
R. 'Stockholm' Rhododendron Hybrid ? X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945	More information
R. 'Bow Bells' Rhododendron Hybrid R. 'Corona' X R. williamsianum Hybridized By: Rothschild, L. de. Founder of Exbury Gardens, UK, 1934 More information and pictures
R. 'Bremen' Rhododendron Hybrid ? X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945 More information and pictures
R. 'Ammerlandense Group' Rhododendron Cultivar group R. 'Britannia' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945 More information and pictures
R. 'E.J.P.Magor' Rhododendron Hybrid R. 'Campdis Group' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1942	More information
R. 'Mystic' Rhododendron Hybrid R. 'Barclayi Group' X R. williamsianum Hybridized By: Harrison, E.G.W.W.. Bodmin, Cornwall, England, 1950 More information and pictures
R. 'Lady April' Rhododendron Hybrid R. 'Dido Group' X R. williamsianum Hybridized By: Childers, A.A., 1958	More information
R. 'April Glow' Rhododendron Hybrid R. 'Wilgen's Ruby' X R. williamsianum Hybridized By: van Wilgen, 1968 More information and pictures
R. 'Minas Grand Pré' Rhododendron Hybrid R. catawbiense X R. williamsianum Hybridized By: Swain, G.S.. Researh Station, Kentville, Nova Scotia, Canada, 1961 More information and pictures
R. 'Moonstone Pink' Rhododendron Hybrid R. campylocarpum ssp campylocarpum X R. williamsianum Hybridized By: Williams, John Charles. Caerhays, Cornwall, England, 1933	More information
R. 'Eidam x williamsianum' Rhododendron Hybrid R. 'Eidam' X R. williamsianum Hybridized By: No hybridiser registered	More information
R. 'Compacta' Rhododendron Hybrid R. 'Faggetter's Favourite' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany	More information
R. 'Elizabeth Lockhart' Rhododendron Hybrid R. haematodes ssp haematodes X R. williamsianum Hybridized By: Lockhart, R.D.. Aberdeen, Scotland, 1964 More information and pictures
R. 'Hachmann's Griselda' Rhododendron Hybrid R. 'Memoir' X R. williamsianum Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany, 1986	More information
R. 'Starlet' Rhododendron Hybrid R. 'Diva Group' X R. williamsianum Hybridized By: Lem Halfdan. Seattle, Washington, USA, 1959 More information and pictures
R. 'Royal Pink' Rhododendron Hybrid R. 'Homer I' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945 More information and pictures
R. 'Dortmund' Rhododendron Hybrid ? X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1953	More information
R. 'Willbrit' Rhododendron Hybrid R. 'Britannia' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1960 More information and pictures
R. 'Boccia' Rhododendron Hybrid R. 'Catawbiense Compactum' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945 More information and pictures
R. 'Carlene' Rhododendron Hybrid R. 'Lem's Goal' X R. williamsianum Hybridized By: Lem Halfdan. Seattle, Washington, USA, 1950 More information and pictures
R. 'Merkur' Rhododendron Hybrid R. 'Louis Pasteur' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1948	More information
R. 'Pipaluk' Rhododendron Hybrid R. 'Doctor Stocker' X R. williamsianum Hybridized By: Harrison, E.G.W.W.. Bodmin, Cornwall, England, 1968	More information
R. 'Hachmann's Kontiki' Rhododendron Hybrid R. 'Ovation' X R. williamsianum Hybridized By: Hachmann, Hans. Barmstedt in Holstein, Germany, 1988	More information
R. 'Lerigau' Rhododendron Hybrid R. 'Duke of York' X R. williamsianum Hybridized By: Hobbie, Dietrich G.. Westerstede/Linswege, Germany, 1945	More information
R. 'Treasure Group' Rhododendron Cultivar group R. forrestii Repens Group X R. williamsianum Hybridized By: Crosfield, J. J.. Embley Park, Romsey, Hampshire, UK, 1937	More information
R. 'Tick-tock' Rhododendron Hybrid R. 'The Honourable Jean Marie de Montague' X R. williamsianum Hybridized By: Greer, Harold E.. Eugene, Oregon, USA, 1957	More information
R. 'Rothenburg' Rhododendron Hybrid R. 'Diane' X R. williamsianum Hybridized By: von Martin, V.. Rothenburg/Oberlausitz, Germany, 1944 More information and pictures
R. 'Glad Tidings' Rhododendron Hybrid X R. williamsianum Hybridized By: Lancaster, Ben, F.. Lackamas Gardens, Camas, Washington, USA, 1965	More information

Offspring Search

R. williamsianum

Next Page

R. 'Tibet'

Rhododendron Hybrid

R. 'Bismarck' X R. williamsianum

R. 'Vulcan's Bells'

Rhododendron Hybrid

R. 'Vulcan's Flame' X R. williamsianum

R. 'Oudijk's Sensation'

Rhododendron Hybrid

R. 'Essex Scarlet' X R. williamsianum

R. 'Doctor H.C. Karl Förster'

Rhododendron Hybrid

R. 'Linswegeanum Group' X R. williamsianum

R. 'Jackwill'

Rhododendron Hybrid

R. 'Jacksonii' X R. williamsianum

R. 'Bad Zwischenahn'

Rhododendron Hybrid

? X R. williamsianum

More information

R. 'Brocade Group'

Rhododendron Cultivar group

R. 'Vervaeneanum' X R. williamsianum

R. 'Pallidum Group'

Rhododendron Cultivar group

R. griffithianum X R. williamsianum

More information

R. 'Lissabon'

Rhododendron Hybrid

R. 'Nova Zembla' X R. williamsianum

R. 'Sea-Tac'

Rhododendron Hybrid

R. 'Moser's Maroon' X R. williamsianum

R. 'Rose Point'

Rhododendron Hybrid

R. 'Dido Group' X R. williamsianum

R. 'Germania'

Rhododendron Hybrid

R. 'Antoon van Welie' X R. williamsianum

R. 'Maizauber'

Rhododendron Hybrid

R. traillianum var traillianum X R. williamsianum

More information

R. 'Libelle'

Rhododendron Hybrid

R. 'Faggetter's Favourite' X R. williamsianum

More information

R. 'Hultschin'

Rhododendron Hybrid

R. insigne X R. williamsianum

R. 'Gartendirektor Rieger'

Rhododendron Hybrid

R. 'Adriaan Koster' X R. williamsianum

R. 'Humming Bird Group'

Rhododendron Cultivar group

R. haematodes ssp haematodes X R. williamsianum

R. 'Gartendirektor Glocker'

Rhododendron Hybrid

R. 'Doncaster' X R. williamsianum

R. 'Linda'

Rhododendron Hybrid

R. 'Britannia' X R. williamsianum

R. 'Robinette'

Rhododendron Hybrid

R. forrestii Repens Group X R. williamsianum

R. 'Alexander Steffen'

Rhododendron Hybrid

R. 'Britannia' X R. williamsianum

More information

R. 'Vinewood'

Rhododendron Hybrid

R. 'Sham's Ruby' X R. williamsianum

R. 'Adriaan Koster x williamsianum'

Rhododendron Hybrid

R. 'Adriaan Koster' X R. williamsianum

More information

R. 'Stockholm'

Rhododendron Hybrid