Semi-Trailing Yellow Gazania
Shamel Ash, Mexican Evergreen Ash
Shaw's Agave
Shoestring Acacia
Shrub Rose
Shrubby Senna
Shumard Red Oak
Sideoats Grama
Silk Tree
Silver Cloud Silverleaf
Silver King Artemisia, Western Mug
Silver King Euonymus
Silver Maple
Silverberry, Thorny Elaeagnus
Small Flower Tamarisk
Small Soapweed
Smoketree, Wigtree
Smooth Agave
Snow-In-Summer
Soaptree Yucca