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Saffron Buckwheat: Eriogonum crocatum Sage: Salvia Saucer Plant: Aeonium undulatum Savoryleaf Aster: Aster liniarifolius Scabious: Scabiosa caucasica Scarlet Lighting: Lychnis chalcedonica Scarlet Monkey Flower: Mimulus cardinalis Scarlet Paintbrush: Crassula perfoliata Scaret-Seeded Iris: Iris foetidissima Scoke: Phytolacca americana Scotch Mint: Mentha x gentilis Scotch Pink: Dianthus plumarius Sea Campion: Silene vulgaris Sea Dahlia: Coreopsis maritima Sea Fig: Carpobrotus chilensis Sea Holly: Eryngium maritimum Sea Hollyhock: Hibiscus moscheutos palustris Sea Kale: Crambe maritima Sea Lavender: Limonium latifolium Sea Mertensia: Mertensia maritima Sea Pea: Lathyrus japonicus Sea Pink: Armeria maritima Sea Poppy: Glaucium flavum Sea Ragwort: Senecio cinerea Seaside Daisy: Erigeron glaucus Self-Heal: Prunella Senna: Cassia Setterwort: Helleborus foetidus Shaggy Hawkweed: Hieracium villosum Shasta Daisy: Chrysanthemum x superbum Sheep's-Bit: Jasione laevis Shellflower: Alpinia zerumbet Shelford Foxtail: Eremurus x isabellinus Shell Ginger: Aplinia zerumbet Shepherd's Crook: Lysimachia clethroides Shepherd's Scabious: Jasione laevis Shooting Star: Dodecatheon Short Purple Flag: Patersonia glauca Show Pelargonium: Pelargonium x domesticum Showy Groundsel: Senecio pulcher Showy Lady's Slipper: Cypripedium reginae Showy Leopard's Bane: Doronicum plantagineum Showy Primrose: Oenothera speciosa Showy Stonecrop: Sedum spectabilis Shrimp Plant: Justicia brandegeana Siberian Bugloss: Brunnera macrophylla Siberian Iris: Iris sibirica Siberian Meadowsweet: Filipendula palmata Siberian Wallflower: Erysimum allionii Sickle Plant: Crassula perfoliata Siebold Primrose: Primula sieboldii Sierra Shooting Star: Dodecatheon jeffreyi Silverbush: Convolvulus cneorum Silver Dollar Plant: Lunaria annua Silver Groundsel: Senecio cinerea Simpler's Joy: Verbena hastata Skullcap: Scutellaria Skunk Cabbage: Veratrum californicum Skunkleaf Polemonium: Polemonium pulcherrimum Small Solomon's Seal: Polygonatum biflorum Small Yellow Foxglove: Digitalis lutea Snakeberry: Actaea rubra Snakehead: Chelone galabra Snake's Head Iris: Hermodactylus tuberosus Sneezeweed: Achillea ptarmica, Helenium Sneezewort: Achillea ptarmica Snowdrop Anemone: Anemone sylvestris Snowflake: Lamium album Snow-in-Summer: Cerastium tomentosum Snow Poppy: Eomecon chionantha Snow Trillium: Trillium grandiflorum Soapweed: Yucca glauca Soapwell: Yucca glauca Soapwort: Saponaria Society Garlic: Tulbaghia violacea Soldier Rose Mallow: Hibiscus militaris Solomon's Seal: Polygonatum Southern Star: Oxypetalum caeruleum Southernwood: Artemisia abrotanum Spanish-Bayonet: Yucca baccata Spanish-Dagger: Yucca gloriosa Spanish Buttons: Centaurea nigra Spanish Shawl: Heterocentron elegans Speedwell: Veronica Spider Aloe: Aloe humillis Spider Plant: Anthericum Spiderwort: Tradescantia Spiked Rampion: Phyteuma spicatum Spike Gayfeather: Liatris spicata Spike Speedwell: Veronica spicata Spotted Beebalm: Monarda punctata Spotted Calla: Zantedeschia albomaculata Spotted Dead Nettle: Lamium maculatum Spotted Dog: Pulomnaria longifolia Spring Adonis: Adonis vernalis Spring Vetchling: Lathyrus vernus Spurge: Euphorbia Squawroot: Trillium erectum St. Bernard's Lily: Anthericum lilago St. Bruno's Lily: Paradisea liliastrum St. John's Chamomile: Anthemis sancti-johannis Staghorn Cinquefoil: Potentilla x tonguei Star Cluster: Pentas lanceolata Starflower: Smilacina stellata Statice: Limonium latifolium Stiff Aster: Aster liniarifolius Stiff Sunflower: Helianthus rigidus Stinking Benjamin: Trillium erectum Stinking Hellebore: Helleborus foetidus Stinking Iris: Iris foetidissima Stokes' Aster: Stokesia laevis Stonecress: Aethionema Stonecrop: Sedum Storksbill: Pelargonium Strawberry Begonia: Saxifraga stolonifera Strawberry Geranium: Saxifraga stolonifera Stream Orchid: Epipactis gigantea Striped Inch Plant: Callisia elegans Sulfur Buckwheat: Eriogonum umbellatum Sulfur Cinquefoil: Potentilla recta Warrenii Summer-Blooming Phlox: Phlox paniculata Suncup: Oenothera Sundrops: Oenothera terragona Sunflower: Helianthus Sun Rose: Helianthemum Swamp Milkweed: Asclepias incarnata Swamp Rose Mallow: Hibiscus moscheutos Sweet Cicely: Myrrhis odorata Sweet Coltsfoot: Petasities fragrans Sweetheart Geranium: Pelargonium echinatum Sweet Pea: Lathyrus odoratus Sweet Rocket: Hesperis matronalis Sweet-Scented Geranium: Pelargonium graveolens Sweet Violet: Viola odorata Sweet White Violet: Viola blanda Sweet William: Dianthus barbatus Sweet Woodruff: Galium odoratum Swordleaf Inula: Inula ensifolia

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