Sisyrinchium idahoense, the Idaho blue-eyed grass, has small iris-like foliage and cheerful star-shaped blue flowers.

Sisyrinchium nashii 'Suwannee' is a blue-eyed grass with small iris-like foliage and cheerful starry sky blue flowers.

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

S. japonica 'Limelight' produces bright green flower buds in the fall that open to fragrant white flowers in mid-spring.

Skimmia japonica 'Magic Marlot' is a slow-growing, dwarf cultivar with blue-green and cream variegated leaves perfect and fragrant, white flowers.

Skimmia japonica 'Rubella' features showy, red floral buds in winter that open to fragrant white panicles in the spring.

Soleirolia soleirolii known as baby’s tears has bright green evergreen leaves in lush moss-like mats.

Soleirolia soleirolii ‘Aurea’ known as golden baby’s tears has golden evergreen leaves in lush moss-like mats.

Speirantha convallarioides resembles lily-of-the-valley in foliage but with short spikes of sweetly fragrant, star-like flowers.

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

Strelitzia reginae, the bird-of-paradise, is one of the most famous and distinctive of the tropical flowers resembling an orange and blue crane.

Strelitzia reginae, the bird-of-paradise, is one of the most famous and distinctive of the tropical flowers resembling an orange and blue crane.

'Mandela's Gold' (formerly 'Kirstenbosch Gold') is a special form of Strelitzia reginae with yellow flowers.

Streptocarpus 'Harlequin Blue' is a Cape primrose and relative of the African violet with bi-coloured flowers of lavender-blue and yellow.

Streptocarpus 'Harlequin Purple' is a Cape primrose and relative of the African violet with bi-coloured flowers of violet and pale yellow.

Streptocarpus Ladyslippers 'Blue Ice' is a relative of the African violet with blue flowers with dark purple-blue veins.

Streptocarpus Ladyslippers 'Grape Ice' has stunning, large, tubular white flowers with dramatic grape purple veining.

Streptocarpus Ladyslippers 'Red Bicolor" is a relative of the African violet with bi-color blooms of red and pink.

Streptocarpus Ladyslippers 'Strawberry Ice" is a relative of the African violet with bi-colour blooms of white and deep pink.

Streptocarpus Ladyslippers 'Yellow Blue Eye' is a relative of the African violet with bi-color blooms of lemony-yellow with purple eyes.

Streptocarpus Ladyslippers 'Yellow Pink Cap' is a relative of the African violet with bi-colour blooms of pink and yellow.

Streptocarpus 'Spin Art' is a Cape primrose and relative of the African violet with cool tri-coloured flowers of purple, red and yellow.