Salpiglossis sinuata 
Saltmarsh morning glory 
Scarlet creeper 
Schizanthus grahamii 
Sea Bindweed 
Showy Chalice Vine 
Sicilian Bindweed 
Silver-leaved Nightshade 
Skyblue clustervine 
Solanum campanulatum 
Solanum furcatum 
Solanum sinaicum 
Solanum trilobatum 
Southern Tea Tree 
Splendid Bindweed 
Sweet potato 
Thicket Honey-thorn 
Tievine 
Tomato 
Tree Tobacco 
Tropical Speedwell 
Turkey berry 
Violet Tubeflower 
Water Morning Glory