Sunburst Locust
Sundowner Flax
Sunrose
Sunset Manzanita
Superstition Bearded Iris
Swan Hill Fruitless Olive
Sweet Bay
Sweet Hakea
Sweet Musette Bearded Iris
Sweet Pea Shrub
Sweet Romance Lavender
Swiss Mountain Pine, Mugo Pine
Sydney Golden Wattle
Tanbark Oak, Tanoak
Texas Ranger, Texas Sage, Cenizo
Threadleaf Coreopsis
Tiny Towers Italian Cypress
Tobira
Tobira Wheeler's Dwarf