Smokey Australian Rosemary
Smooth-edged Agave
Snapdragon
Snow Ball Viburnum
Snow White Flowering Tea Tree
Snow-In-Summer
Soaptree Yucca
Society Garlic
Sonoma Sage, Creeping Sage
Sour Grapes Penstemon
Southern Magnolia, Bull Bay
Southern Pink Flowering Currant
Spanish Bayonet
Spanish Lavender
Sparaxis, Harlequin Flower
Spathe Leaved Sedum
Spear Lily
Spice Bush
Spider Flower
Spike Gayfeather