- Rhododendron x 'Kali'
- Rhododendron anthopogon x Rhododendron lapponicum ‘Frosthexe’
- Rhododendron calostrotum ssp. keleticum
- Rhododendron x calostrotum subsp. riparioides x’Pigalle’
- Rhododendron x campyloginum ‘Too Bee’
- Rhododendron x carolinianum ‘P.J.M. Elite’
- Rhododendron x carolinianum ‘P.J.M. Victor'
- Rhododendron x catawbiense 'Rasputin'
- Rhododendron complexum
- Rhododendron x dauricum 'April Reign'
- Rhododendron x dauricum 'April Rose'
- Rhododendron x fastigiatum 'Blue Steel’
- Rhododendron ferrugineum
- Rhododendron x hirsutum
- Rhododendron impeditum
- Rhododendron x impeditum ‘Ronny’
- Rhododendron x impeditum 'Blue Tit Magor'
- Rhododendron kotschyi
- Rhododendron ledebourii
- Rhododendron ludlowii 'Wren'
- Rhododendron x micrantum 'Bloombox'
- Rhododendron x obtusum 'Michiko'
- Rhododendron primuliflorum 'Doker LA'
- Rhododendron prostratum
- Rhododendron pumilum x lapponicum 'Pulap'
- Rhododendron x repens ‘Corinna
- Rhododendron roxeianum 'Graziella'
- Rhododendron russatum compactum
- Rhododendron sanguineum subsp. didymium x Repens Group 'Carmen'
- Rhododendron tomentosum v. arcticum (ledum palustre/decumbes
- Rhododendron x yakushimanum 'Florkissen'
- Rhododendron yakushimanum 'Koichiro Wada'
- Rhododendron yakushimanum 'Schneekissen'
