Sunrose
Sunset Manzanita
Sunset Rockrose
Swan Hill Fruitless Olive
Sweet Alyssum
Sweet Bay, Bay Leaf, Grecian Laurel
Sweet Flag
Sweet Gum
Sweet Hakea
Sweet Musette Bearded Iris
Sweet Olive, Tea Olive
Sweet Orange cultivars
Sweet Pea
Sweet Violet, English Violet
Sweet William
Sweet-Pea Shrub
Swiss Mountain Pine
Taiwan Creeping Blackberry
Tanbark Oak, Tan Oak
Tanyosho Pine, Table Mnt. Pine