Silver Dollar Gum
Silver Fountain Butterfly Bush
Silver Lace Vine
Silver Lace Society Garlic
Silver Leaf Marguerite, Paris Daisy
Silver Maple, Soft or White Maple
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