Perennials: Solidago - Swainsona (89)

Solidago x'Dansolitlem (Little Lemon)' Solidago x'Gold Baby' Solidago canadensis Solidago canadensis'Crown of Rays' Solidago cutleri'Goldrush' Solidago rigida Solidago rugosa'Fireworks' Solidago spathulata'Golden Fleece' Sorghastrum nutans'Indian Steel' Sorghum halapense Sparaxis elegans Sparaxis tricolor Sparganium androcladum Spartina alternifolia Spartina bakeri Spartina pectinata'Aureo-marginata' Spathiphyllum x Spathiphyllum x'Sensation' Spathiphyllum x'Supreme' Spathiphyllum x'Taylor's Green' Spathiphyllum wallisii'Clevelandii' Sphaeralcea ambigua Sphaeralcea munroana Spigelia marilandica Spiranthes cernua var. odorata Spiranthes odorata'Chadds Ford' Spodiopogon sibiricus Sporobolus capillaris Sporobolus heterolepis Sporobolus lindheimeri Sprekelia formosissima'Superba' Stachys x'Hidalgo' Stachys albens Stachys albotomentosa Stachys byzantina Stachys byzantina'Big Ears' Stachys byzantina'Helen von Stein' Stachys byzantina'Primrose Heron' Stachys byzantina'Silver Carpet' Stachys macrantha'Robusta' Stachys monnieri'Hummelo' Stachys officinalis Stachys officinalis'Alba' Stachys officinalis'Grandiflora' Stachys officinalis'Rosea' Stachys officinalis'Rubrum Superbum' Stachys palustris Stachytarpheta mutabilis Stachytarpheta mutabilis'Variegata' Stapelia Stapelia gigantea Stapelia grandiflora Stapelia schinzii Stenocereus alamosensis Stenocereus dumortieri Stenocereus eruca Stenocereus griseus Stenocereus gummosus Stenocereus hystrix Stenocereus montanus Stenocereus thurberi Stenospermation x'San Carlos' Stenotaphrum secundatum'Variegatum' Sternbergia clusiana Sternbergia lutea Stictocardia beraviensis Stipa arundinacea Stipa capillata Stipa gigantea Stipa tenuissima Stokesia laevis Stokesia laevis'Blue Danube' Stokesia laevis'Honeysong Purple' Stokesia laevis'Klaus Jelitto' Stokesia laevis'Mary Gregory' Stokesia laevis'Omega Skyrocket' Stokesia laevis'Purple Parasols' Stokesia laevis'Silver Moon' Stratiotes aloides Strelitzia reginae Streptocarpus x hybridus Streptocarpus saxorum Strobilanthes dyerianus Stromanthe 'Burle Marx' Stylophorum diphyllum Sutera cordata'Abunda White Improved' Sutera cordata'Giant Snowflake' Sutera diffusa'Sunlovers Bacopa 1766' Swainsona formosa