Shepherdia argentea Shepherdia canadensis
Shepherdia rotundifolia Sida eggersii
Simmondsia chinensis X Sinocalycanthus raulstonii 'Hartlage Wine'
Skimmia x confusa 'Kew Green' Skimmia japonica
Skimmia japonica 'Cecelia Brown' Skimmia japonica 'Rubella'
Skimmia japonica 'Snow Dwarf' Smilax hispida
Solandra maxima Solandra maxima 'Variegata'
Solanum pseudocapsicum Sollya heterophylla 'Boddys Choice'
Sophora davidii Sophora tomentosa
Sorbaria sorbifolia Sorbaria tomentosa
Sorbus multijuga Sorbus rehderiana
Sorbus sitchensis Spartium junceum
Spiraea 'Candle Light' Spiraea 'Goldmound'
Spiraea betulifolia Spiraea betulifolia 'Tor'
Spiraea betulifolia 'Tor Gold (Glow Girl®)' Spiraea x billardii 'Triumphans'
Spiraea x bumalda 'Crispii' Spiraea cantoniensis
Spiraea x cinerea 'Grefsheim' Spiraea decumbens
Spiraea douglasii Spiraea formosana
Spiraea fritschiana Spiraea fritschiana 'Wilma(Pink Parasols®)'
Spiraea japonica 'Alpina' Spiraea japonica 'Anthony Waterer'
Spiraea japonica 'Bullata' Spiraea japonica 'Candlelight'
Spiraea japonica 'Crispa' Spiraea japonica 'Dakota Goldcharm'
Spiraea japonica 'Dart's Red' Spiraea japonica 'Dolchica'
Spiraea japonica 'Firelight' Spiraea japonica 'Flaming Mound'
Spiraea japonica 'Frobelii' Spiraea japonica 'Galen (Double Play® Artisan®)'
Spiraea japonica 'Golden Elf' Spiraea japonica 'Golden Princess'
Spiraea japonica 'Goldflame' Spiraea japonica 'Lemon Princess'
Spiraea japonica 'Limemound®' Spiraea japonica 'Little Princess'
Spiraea japonica 'Macrophylla' Spiraea japonica 'Magic Carpet'
Spiraea japonica 'Mertyann (Dakota Goldcharm®)' Spiraea japonica 'Nana'
Spiraea japonica 'NCSXI (Double Play® Candy Corn™)' Spiraea japonica 'Neon Flash'
Spiraea japonica 'Norman' Spiraea japonica 'Shirobana'
Spiraea japonica 'Tracy (Double Play® Big Bang™)' Spiraea japonica 'White Gold'
Spiraea japonica 'Yan (Double Play® Gold)' Spiraea japonica var. fortunei 'Albiflora'
Spiraea media 'Darsnorm(Snow Storm™)' Spiraea media 'SMSMBK (Double Play® Blue Kazoo®)'
Spiraea miyabei Spiraea nipponica
Spiraea nipponica 'Snowmound' Spiraea prunifolia
Spiraea prunifolia 'Plena' Spiraea slatchenfella
Spiraea splendens Spiraea tarokoensis
Spiraea thunbergii Spiraea thunbergii 'Mt. Fuji'
Spiraea trilobata 'Fairy Queen' Spiraea trilobata 'Swan Lake'
Spiraea x vanhouttei Spiraea x vanhouttei 'Pink Ice'
Spiraea x vanhouttei 'Renaissance' Spiraea virginiana
Stachytarpheta cayennensis Stachytarpheta frantzii
Stachytarpheta jamaicensis Stachytarpheta mutabilis
Stachytarpheta mutabilis 'Variegata' Stachytarpheta urticifolia 'Prostrate Blue'
Stachyurus chinensis 'Joy Forever' Stachyurus chinensis 'Magpie'
Stachyurus praecox Stachyurus praecox 'Rubriflora'
Staphylea holocarpa Stephanandra incisa
Stephanandra incisa 'Crispa'