Southwestern Cosmos
Spanish Bayonet
Spanish Dagger
Spider Agave
Spider Aloe
Spineless Yucca
Spotted Emu Bush
Sprawling Prickly Pear
Spreading Acacia 'Desert Carpet'
Spreading Fleabane
Sprenger or Emerald Asparagus
Spruce Cones
Sticks on Fire
Stiff Bottlebrush
Stout Tooth Agave
Strawberry Hedgehog
Sugar Bush
Summertime Blue Eremophila
Sunburst Trailing Gazania
Sundrops, Desert Sundrops