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Scientific Name Common Name(s) Plant Category Image
Solanum pseudocapsicum Jerusalem cherry Perennials, Poisonous Plants
Solanum tuberosum Potato, irish potato, white potato Poisonous Plants
Solenostemon pumilus Trailing coleus Annuals
Solenostemon scutellarioides Coleus, painted nettle Annuals, Poisonous Plants
Solidago altissima Canada goldenrod, Canadian goldenrod, late goldenrod, tall goldenrod Native Plants, Perennials, Wildflowers
Solidago bicolor Silver-rod, White goldenrod Wildflowers
Solidago caesia Axillary goldenrod, Blue stemmed goldenrod, Woodland goldenrod Native Plants, Wildflowers
Solidago juncea Early goldenrod Native Plants, Perennials, Wildflowers
Solidago nemoralis Common goldenrod, Gray goldenrod Wildflowers
Solidago rugosa Rough-leaf goldenrod, Rough-stemmed goldenrod, Wrinkle-leaf goldenrod, Wrinkleleaf goldenrod Native Plants, Perennials
Solidago sempervirens Seaside goldenrod Wildflowers
Solidago speciosa Showy goldenrod Native Plants, Wildflowers
Solidago spp. Erect goldenrod Wildflowers
Solidago spp., S. hybrids Goldenrod Perennials
Solidago uliginosa Bog goldenrod Native Plants, Wildflowers
Sonchus asper Spiny-leaved sow-thistle Wildflowers
Sonchus spp. Sow thistle, Sowthistle Annuals, Herbs
Sophora davidii = S. viciifolia David's mountain laurel Shrubs
Sophora secundiflora Mescal bean Poisonous Plants
Sorbaria sorbifolia False spirea Shrubs
Sorbus alnifolia Korean Mountain ash Trees
Sorbus americana American mountainash Native Plants, Trees
Sorbus aucuparia European Mountain ash Trees
Sorbus commixta Japanese mountainash Trees
Sorghastrum nutans Ornamental Grass
Sorghum halepense Johnsongrass Poisonous Plants
Sorphaatum nutans Indian grass Ornamental Grass
Sparaxis Harlequin flower, Wand flower Summer Bulbs
Sparaxis hybrids Harlequin Flower Spring Bulbs
Sparmannia africana African hemp Poisonous Plants
Spartina pectinata Cord grass Prairie Ornamental Grass
Spartium junceum Spanish broom Shrubs
Spathiphyllum spp. Peace lily, spathe flower Poisonous Plants
Spigelia marilandica Indian pink, pinkroot Poisonous Plants, Wildflowers
Spiraea cantoniensis Bridal-wreath spirea, Spirea, Reeves spirea (double) Shrubs
Spiraea fritschiana Fritschiana spirea, Korean spirea Shrubs
Spiraea japonica Japanese spirea Shrubs
Spiraea nipponica 'Snowmound' Snowmound spirea Shrubs
Spiraea prunifolia Bridalwreath spirea Shrubs
Spiraea thunbergii Breath of Spring spirea, Thunberg spirea Shrubs
Spiraea tomentosa Hardbark spirea, Hardhack, Spirarea, Steeplebush Native Plants, Shrubs
Spiraea trilobata Threelobe spirea Shrubs
Spiraea x bumalda Bumalda spirea Shrubs
Spiraea x bumalda 'Anthony Waterer' Anthony Waterer spirea Shrubs
Spiraea x cinerea 'Grefsheim' Grefsheim spirea Shrubs
Spiraea x vanhouttei Vanhoutte spirea Shrubs
Spiranthes cernua Nodding ladies tresses Wildflowers
Spiranthes lacera var. gracilis Slender ladies tresses Wildflowers
Spiranthes tuberosa var. gracilis Little ladies tresses Wildflowers
Spodiopogon sibiricus Frost grass, Siberian graybeard, Spodiopogon Ornamental Grass