Soap Aloe Soap Bush
Soap Tree Yucca Soap-bark Tree
Soapberry, Chinese Soapberry, Florida
Soapberry, Western Soapberry, Wingleaf
Soapweed Yucca Soapweed Yucca: glauca
Soapwort (spp.) Soapwort, Rock
Society Garlic (spp.) Society Garlic 'Silver Lace'
Society Garlic Variegated Soft Boronia
Soft Maple (spp.) Soft Maple 'Beebe'
Soft Maple 'Pyramidale' Soft Maple 'Silver Queen'
Soft Maple 'Skinneri' Soft Maple 'Wieri'
Soft Rush 'Gold Strike' 'Soft Serve®' Sawara Cypress
Soft Shield Fern (spp.) Soft Shield Fern 'Densum'
Soft Shield Fern 'Plumosomultilobum' Soft Shield Fern 'Rotundatum Cristatum'
Soft Tip Yucca 'Soft Touch' Japanese Holly
'Softly Softly' Rose Solander's Banksia
'Solar Flare' Hosta Soldier Boy
Soldier Boy: orthopetala Soldier Boy: pallida
Soldier Boys Golden Soldierwood
Soledad Pine Solitaire Palm
Solomon's Seal Solomon's Seal 'Bill Baker Form'
Solomon's Seal (spp.) Solomon's Seal, Dwarf
Solomon's Seal, Scented (spp.) Solomon's Seal, Scented Variegated
Solomon's Seal: humile, Dwarf Somali Hemp
'Sombrero' Common Zinnia 'Somerset' Burkwood Daphne
'Something Different' Hosta 'Sommerflu' Cinquefoil
'Sonata White' Garden Cosmos 'Song of India' Reflexed Dracaena
'Song of Jamaica' Reflexed Dracaena 'Song Sparrow' Daylily
'Sonia' Rose 'Sonic Bloom® Pearl' Old Fashioned Weigela
'Sonic Bloom® Pink' Old Fashioned Weigela 'Sonic Bloom™ Red' Old Fashioned Weigela
'Sonnet Crimson' Snapdragon 'Sonnet Spring' Azalea
Sonoma Manzanita (spp.) Sonoma Manzanita 'Howard McMinn'
'Sonora' Black-eyed Susan Sonoran Desert Ruellia
Sonoran Palmetto Sonoran tree Beargrass
'Sooner Gold' Daylily Sophora
Sophora, Hairy Sophora, Texas
'Soquel' Coast Redwood 'Soraya' Common Sunflower
'Sorbet Orange Duet' Horned Violet Sorrel
Sorrel Tree Sorrel, Four Leaf
Sorrel, Jamaica Sorrel, Red
Sotol Sotol, Common
Sotol, Narrow-Leaf Soup Mint (spp.)
Sour Dock 'Sour Grapes' Bearded Tongue: Penstemon
Sour Gum (spp.) Sour Gum 'Dirr Selection'
Soursop Sourwood