Hybridizer Profile

R. 'Jack Izod'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1931

R. 'Jeanne A. Koster'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1900

R. 'Jeanne d'Arc'

Rhododendron Hybrid

R. 'Aileen Henderson' X R. 'Mrs L.A. Dunnett'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1939

R. 'King Lear'

Azalea Hybrid

? X R. molle ssp japonicum

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1925

R. 'Koster's Brilliant Red'

Azalea Hybrid

R. molle ssp molle X R. molle ssp japonicum

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1918

R. 'Koster's Cream'

Rhododendron Hybrid

R. campylocarpum ssp campylocarpum X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1958

R. 'Lady Ethel Edgar'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1942

R. 'Lady Ethel Hall'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1925

R. 'Lady Stuart of Wortley'

Rhododendron Hybrid

R. 'Coombe Royal Group' X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1909

R. 'Laertes'

Azalea Hybrid

R. molle ssp japonicum X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1970

R. 'Lafontaine'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1929

R. 'Lamplighter'

Rhododendron Hybrid

R. 'Britannia' X R. 'Madame Fr. J. Chauvin'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1955

R. 'Lessing'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1929

R. 'Madame de Bruin'

Rhododendron Hybrid

R. 'Prometheus' X R. 'Doncaster'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1904

R. 'Madame Fr. J. Chauvin'

Rhododendron Hybrid

R. fortunei ssp fortunei X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1916

R. 'Marconi'

Azalea Hybrid

R. molle ssp molle X R. molle ssp japonicum

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1924

R. 'Marinus Koster'

Rhododendron Hybrid

R. griffithianum X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1937

R. molle ssp japonicum 'Elisabeth'

Azalea Species Selection

Selected By: Koster M. & Sons , Boskoop , Netherlands, 1896

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Sinensia

R. molle ssp japonicum 'Queen Alexandra'

Azalea Species Selection

Selected By: Koster M. & Sons , Boskoop , Netherlands, 1925

Subgenus: Pentanthera
Section: Pentanthera
Subsection: Sinensia

R. 'Mrs Betty Robertson'

Rhododendron Hybrid

R. 'Mrs Lindsay Smith' X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1920

R. 'Mrs Charles E Pearson'

Rhododendron Hybrid

R. 'Coombe Royal Group' X R. catawbiense 'Catawbiense Grandiflorum'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1909

R. 'Mrs G. W. Leak'

Rhododendron Hybrid

R. 'Coombe Royal Group' X R. 'Chevalier Felix de Sauvage'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1916

R. 'Mrs Helen Koster'

Rhododendron Hybrid

R. 'Mrs J J Crosfield' X R. catawbiense 'Catawbiense Grandiflorum'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1930

R. 'Mrs John Russell'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1939

R. 'Mrs Lindsay Smith'

Rhododendron Hybrid

R. 'George Hardy' X R. 'Duchess of Edinburgh'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1910

R. 'Mrs Peter Koster'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1958

R. 'Mrs Samuel Wallrock'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1931

R. 'Multiflorum'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1931

R. 'Netty Koster'

Rhododendron Hybrid

R. 'Mrs L.A. Dunnett' X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1958

R. 'Peter Koster'

Rhododendron Hybrid

R. 'George Hardy' X R. 'Doncaster'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1909

R. 'Polar Star'

Rhododendron Hybrid

R. smirnowii X R. 'Doncaster'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1902

R. 'Raoul Millais'

Rhododendron Hybrid

R. griffithianum X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1922

R. 'Red Star'

Rhododendron Hybrid

R. 'Moličre' X R. 'Mrs Lindsay Smith'

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1940

R. 'Richard Strauss'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1958

R. 'Rodeo'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands

R. 'Rosamund Millais'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands

R. 'Sakata Pink'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1931

R. 'Schiller'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands

R. 'Stella'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands

R. 'Sunbeam'

Azalea Hybrid

R. 'Altaclarense' X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1895

R. 'Superbum'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1901

R. 'Suzanne Loef'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1962

R. 'Vincent van Gogh'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1939

R. 'Vondel'

Rhododendron Hybrid

R. 'Mrs Lindsay Smith' X R. campylocarpum ssp campylocarpum

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1958

R. 'W.A. Dunstan'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1958

R. 'Willem Barendtz'

Rhododendron Hybrid

? X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands

R. 'Willem II'

Azalea Hybrid

? X ?

Hybridized By: Koster M. & Sons | Boskoop | Netherlands

R. 'Yellow Prince'

Azalea Hybrid

R. molle ssp molle X R. molle ssp japonicum

Hybridized By: Koster M. & Sons | Boskoop | Netherlands, 1939

R. 'Zeelandia'

Rhododendron Hybrid

R. fortunei ssp fortunei X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1928

R. 'Zuiderzee'

Rhododendron Hybrid

R. 'Mrs Lindsay Smith' X R. campylocarpum ssp campylocarpum

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1936

R. 'Zuiderzee Group'

Rhododendron Cultivar group

R. 'Mrs Lindsay Smith' X ?

Hybridized By: Koster M. & Sons. Boskoop, Netherlands, 1936