Siberian Elm
Siberian Wallflower
Sideoats Grama
Silk Tree, Mimosa Tree
Silver Cloud Violet Silverleaf
Silver Dollar Gum, Red Box Gum
Silver Lace Society Garlic
Silver Maple
Silver Mound Artemisia
Silver Mountain Gum
Silver Sage
Silver Wormwood
Sky Flower. Golden Dew-Drop
Skyrocket Columnar Juniper
Slipper Flower, Pouch Flower
Snapdragon
Snow White Manuka Tea Tree
Snow-In-Summer
Soap Aloe, African Aloe
Soaptree Yucca