Silver Mound Artemisia
Silver or Large Wormwood
Silver Sage
Silvery Germander
Silvery Sunproof Lilyturf
Siskiyou Mexican Evening Primrose
Skyrocket Columnar Juniper
Slender deutzia
Small Cape Rush
Small Jeruselum Sage
Smooth-Edged or Weber Agave
Snapdragon
Snow White Spreading Manuka
Snow-In-Summer
Snowdrift Crabapple
Soaptree Yucca
Society Garlic
Soquel Coast Redwood
Sour Gum, Tupelo, Pepperidge
South African Fern Pine