Sampson, Black (spp.) Sampson, Black 'Bright Star'
Sampson, Black 'Kim's Knee High' Sampson, Black 'Kim's Mophead'
Sampson, Black 'Magnus' Sampson, Black 'Ruby Star'
Sampson, Black 'White King' Sampson, Black 'White Swan'
'Samuel Sommer' Southern Magnolia Sand Cherry, Purple Leaf
Sand Pear Sand Pine
Sandberry (spp.) Sandberry 'Massachusetts'
Sandberry 'Microphylla' Sandberry 'Point Reyes'
Sandberry 'Radiant' Sandmat Manzanita
'Sandra' Summer Phlox 'Santa Cruz' Firethorn
'Santa Cruz' Pyracantha 'Santa Rosa' Laurel Magnolia
Sapphire Sage 'Black and Blue' 'Sarabande' Maiden Grass
'Sarah Eve' Virginia Sweetspire Sargent Crabapple (spp.)
'Sargentii' Canadian Hemlock Saskatoon Serviceberry (spp.)
Saskatoon Serviceberry 'Regent' Sassafras
Sassafras, Common 'Satinleaf' Southern Magnolia
Satinwood 'Saturnalia' Virginia Sweetspire
'Satyr Hill' American Holly 'Savannah' Topal Holly
Saw Palmetto Scabious, Sweet (spp.)
Scarket Coral Tree Scarlet Bottlebrush (spp.)
Scarlet Bush Scarlet Kunzea
'Scarlet Leader' Willowleaf Cotoneaster Scarlet Monkey Flower
Scarlet Oak Scarlet Rose Mallow
Scarlet Sage 'Lady in Red' Scarlet Sage: splendens (spp.)
Scarlet Sage: splendens 'Caramba' Scarlet Sage: splendens 'Cleopatra'
Scarlet Sage: splendens 'Empire Red' Scarlet Sage: splendens 'Firecracker Wow'
Scarlet Sage: splendens 'Purple Blaze' Scarlet Sage: splendens 'Sizzler Burgundy'
Scarlet Sage: splendens 'Sizzler Salmon' Scarlet Sage: splendens 'Van Houttei'
Scarlet Sage: splendens 'Vista Red' 'Scarlett O'Hara' Winterberry: verticillata
'Scent and SensibilityŽ Pink' Lilac 'Scentimental' Rose
'Scentsation' Common Honeysuckle Schefflera (spp.)
'Schilling's Dwarf' Yaupon Holly 'Schlesingeri' Red Maple
'Schottii' Eastern Red Cedar Schrub Pine
'Schubert' Chokecherry Scotch Rose 'Hispida'
Scrub Pine Scuppernong
Sea Dahlia 'Sea Foam' Rose
Sea Grape Sea Grape: microstachya
Sea Grape: rugosa Sea Grape: uvifera
Sea Oats 'Secret' Rose
Sedge, Asa Gray Sedge, Mace
Sedge, Sallow Sedge, Threeway
'Select III' Southern Magnolia 'Selkirk' Flowering Crabapple
'Seneca Chief' Sugar Maple 'Senorita' Rose
'Sentinel' Flowering Crabapple 'Sentry' Possum Haw Holly
'September Gold' Daylily Sequoia, Giant (spp.)