Spinach 'Melody' Spinach Mustard 'Tatsoi'
Spinach, New England Spinach, New Zealand
'Spindle' Bitter Gourd Vine Spineless Cactus
Spineless Century Plant (spp.) Spineless Century Plant 'Nova'
Spineless Prickly Pear Spineless Yucca
Spineless Yucca: recurvifolia 'Spinell' Astilbe
Spiny Aloe Spiny Bear's Breeches (spp.)
Spiny Headed Mat Rush Spiraea, Florist's 'Bremen'
Spiraea, Florist's 'Deutschland' Spiraea, Florist's 'Elizabeth van Veen'
Spiraea, Florist's 'Montgomery' Spiraea, Florist's 'Red Sentinel'
Spiral Aloe Spiral Ginger (spp.)
Spiral Ginger 'Nova' Spiral Ginger Variegated
Spiral Ginger: barbatus Spiral Ginger: curvibracteatus
Spirea, False (spp.) Spirea, False 'Bressingham Beauty'
Spirea, False 'Bridal Veil (Brautschleir)' Spirea, False 'Bumalda'
Spirea, False 'Cattleya' Spirea, False 'Cotton Candy'
Spirea, False 'Darwin's Dream' Spirea, False 'Elizabeth Bloom'
Spirea, False 'Erika' Spirea, False 'Fanal'
Spirea, False 'Federsee' Spirea, False 'Flamingo'
Spirea, False 'Gloria' Spirea, False 'Granat'
Spirea, False 'Grete Pungel' Spirea, False 'Red Light (Rotlicht)'
Spirea, False 'Showstar' Spirea, False 'Spinell'
Spirea, Pumila (spp.) Spirea, Pumila 'Finale'
Spirea, Pumila 'Pumila' 'Spirit Lake' Florist's Chrysanthemum
Spleenwort Fern Spleenwort, Ebony
Spleenwort, Mother Spleenwort: nidus
'Splendens' Coral Bells: sanguinea 'Splendens' Horned Violet
'Splendens' Sea Thrift 'Splendens' Two Row Stonecrop
'Splendor Mix' Swan River Daisy: Brachycome Split Leaf Philodendron
Split Leaf Water Clover Spoon Flower
Spoon Mustard 'Tatsoi' 'Spotlight' Black-eyed Susan
Spotted Bee Balm Spotted Bellflower (spp.)
Spotted Bellflower 'Cherry Bells' Spotted Bellflower 'Elisabeth'
Spotted Bellflower 'Wedding Bells' Spotted Dead Nettle (spp.)
Spotted Dead Nettle 'Beedham's White' Spotted Dead Nettle 'Chequers'
Spotted Dead Nettle Golden Spotted Dead Nettle 'Pink Pewter'
Spotted Dead Nettle 'Purple Dragon' Spotted Dead Nettle 'Shell Pink'
Spotted Dead Nettle 'White Nancy' Spotted Dog 'Bertram Anderson'
Spotted Dog 'Cevennensis' Spotted Dog 'Diana Clare'
Spotted Dog 'Excalibur' Spotted Dumbcane 'Camilla'
Spotted Dumbcane 'Rudolph Roehrs' Spotted Dumbcane 'Tropic Snow'
Spotted Wintergreen 'Spotty' Cheddar Pink
Spreading Beefsteak Plant (spp.) Spreading Beefsteak Plant 'Atropurpurea'
Spreading Sedge 'Bunny Blue' Spreading Sedum
Spreading Stonecrop 'Sprengeri' Asparagus Fern