Ranunculus aconitifolius 'Flore Pleno'
Ranunculus ficaria 'Flore Pleno'
Ranunculus ficaria 'Salmon's White'
Reseda luteola
Rhazya orientalis
Rheum palmatum 'Savill'
Rodgersia 'Badenweiler'
Rodgersia 'Bloody Mary'
Rodgersia 'Marie-Christine'
Rodgersia 'Eichkatlz'
Rodgersia 'Eichkatzl' blad
Rodgersia 'Fireworks' bloei
Rodgersia pinnata 'Maurice Mason' bloei
Rodgersia pinnata 'Maurice Mason'
Rodgersia purdomii 'Kupferschein'
Rodgersia
Roscoa 'Peacock Eye'
Roscoa purpurea 'Peacock Eye'
Rudbeckia subtomentosa
Ruscus 'John Redmond'
