Spanish Iris
Spanish Lavender
Spear Lily
Species Rose
Spice Bush
Spike Gayfeather, Blazing Star
Spineless Yucca
Spreading Acacia
Sprenger Asparagus
St. Catherine's Lace
Stalked Aeonium
Star Jasmine
Star Magnolia
Sticky Monkey Flower
Stonecrop
Strawberry Madrone
Strawberry Tree
Streamside Monkey Flower
String of Pearls
Striped Society Garlic