Silphium perfoliatum or cup plant is a dramatic perennial with towering 6-8 feet tall stems with bright yellow daisies.

Sisyrinchium striatum has spiky, evergreen foliage and upright stems bearing pretty, pale yellow flowers in early summer.

Stapelia gigantea is a crazy succulent with amazing flowers that look like huge fuzzy starfish up to 12 inches across!

Strumaria picta is a beautiful candy-cane-coloured species with red and white bell-shaped flowers with a spicy fragrance.

Strumaria salteri is a cute and dainty species with glistening mid pink flowers with darker central bands that bloom in fall.

S. truncata White Form has beautiful outward-facing or nodding clusters of white, fragrant, funnel-shaped flowers.

Styrax obassia, the fragrant snowbell, is a lesser-known relative of the Japanese snowbell, Styrax japonicus.