'September Gold' Daylily 'September Sun' Hosta
Serbian Bellflower (spp.) Serbian Bellflower 'E.K. Toogood'
'Serena Purple' Summer Snapdragon 'Serena White' Summer Snapdragon
'Serene Madame' Daylily Seriphidium
Setterwort (spp.) Setterwort Variegated
Seven Year Bean 'Shade Fanfare' Hosta
'Shadyside' Daylily 'Shaggy' Greater Masterwort
Shaggy Shield Fern 'Shale Barrnes' Wild Stonecrop
Shallot (spp.) Shallot 'Kelsae Sweet Giant'
Shampoo Ginger Shamrock (spp.)
Shamrock 'Atropurpureum' Shamrock 'Wheatfen'
Shamrock, False Shamrock, Purple (spp.)
Shamrock, Purple 'Atropurpurea' Shamrock: viops
Sharp-lobed Hepatica 'Sharps Improved' Buffalo Grass
Shasta Daisy (spp.) Shasta Daisy 'Aglaia'
Shasta Daisy 'Alaska' Shasta Daisy 'Becky'
Shasta Daisy 'Crazy Daisy' Shasta Daisy 'Filigran'
Shasta Daisy 'Little Princess' Shasta Daisy 'Marconi'
Shasta Daisy 'Silver Princess' Shasta Daisy 'Snow Lady'
Shasta Daisy 'Snowcap' Shasta Daisy 'Summer Snowball'
Shasta Daisy 'Switzerland' Shasta Daisy 'Thomas Killen'
Sheep's Bit Sheep's Burrs (spp.)
Sheep's Fescue 'Boulder Blue' Sheep's Fescue 'Golden Toupee'
'Sheffield' Florist's Chrysanthemum Shell Ginger (spp.)
Shell Ginger Variegated 'Shell Pink' Balloon Flower
'Shell Pink' Spotted Dead Nettle Shellflower Ginger (spp.)
Shellflower Ginger Variegated Shellflower, Mexican
Shellflower: pavonia Shepherd's Crook
Shepherd's Scabious 'Shepherd's Warning' Bloody Cranesbill
'Sherwood Purple' Creeping Phlox 'Shiela's Sunshine' Giant Sunflower
Shield Fern: atrata Shield Fern: cycadina
Shin Dagger Shining Coneflower 'Herbstsonne'
'Shining Light' Hybrid Toad Lily Shiny Coneflower 'Herbstsonne'
Shiny Desert Parsley Shiny Lomatium
'Shiroman' Sacred Lotus Shiroshima Bamboo
Sho Wu Chih 'Shogun' Double Japanese Aster
Shooting Star Shooting Star, Foothill
Shooting Star, Henderson's Shooting Star, Sierra
Shooting Star, Woodland Shooting Star: meadia
Short Leaved Aloe (spp.) Short Leaved Aloe Variegated
Short Toothed Mountain Mint Short tube Lycoris
'Sho-Un' Hybrid Clematis 'Shout' New York Aster
'Show Stopper' Double Impatiens 'Showstar' Astilbe
Showy Colchicum (spp.) Showy Colchicum 'The Giant'
Showy Evening Primrose (spp.) Showy Evening Primrose 'Rosea'
Showy Fleabane 'Dignity' Showy Fleabane 'Prosperity'
Showy Geranium Showy Lady's Slipper
Showy Libertia Showy Penstemon
Showy Stonecrop (spp.) Showy Stonecrop 'Lidakense'
Showy Stonecrop: Hylotelephium 'SunSparkler® Firecracker'