Knight & Perry

R. 'Aberdeenii'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Alatum Plenum'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Albertii'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Album Sion'

Rhododendron Hybrid

R. campanulatum ssp campanulatum x ?

Hybridized By: Knight & Perry

R. 'Album Striatum'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Album Tardivum'

Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. arboreum ssp arboreum 'Lambdenii'

Rhododendron Species Selection

Selected By: Knight & Perry

R. 'Badina'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Barkerianum'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Berryi'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Boylei'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Coccineum'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Coccineum Semiplenum'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Cyreii'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Decora'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Dickensii'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Edmondsii Semiduplex'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Elegans Superbum'

Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Evelynii'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Exquisite'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Exquisitum'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Fergusonii'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Fergusonii'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Flora'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Frostii'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Frost's Semi-double'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Fulleri'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Garland'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Globosum'

Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Gloria Mundi Maxima'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Glorium'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Gonthynii'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Gracile'

Deciduous Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Green's White'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Harlequin'

Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Juliana'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Keteleerii'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Lamartine'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Lateritium Pulchrum'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Lateritium Superbum'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Leetchii'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Lepidum'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Macranthum Nigrum'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Macranthum Pupureum'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Maculatum Grandiflorum Album'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Palmyre de Trianon'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Persolutum'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Salmoneum'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Salopiense'

Evergreen Azalea Hybrid

? x ?

Hybridized By: Knight & Perry

R. 'Variabile'

Rhododendron Hybrid

? x ?

Hybridized By: Knight & Perry