Sedum rupestre 'Rice Creek' Winter Fire is a stonecrop with yellow flowers and green foliage that turns red in the colder months.

Sedum Sunsparkler 'Angelina's Teacup' is a compact, dwarf form of 'Angelina' that does not bloom.

Sedum 'Turquoise Tails' has turquoise blue, succulent foliage and tall stems topped with pale green to creamy yellow flowers.

Sedum spathulifolium is a creeping stonecrop with silver-grey to red succulent leaves and yellow starry flowers.

Sedum spathulifolium 'Carnea' is creeping stonecrop of silver-grey to red succulent leaves and yellow starry flowers.

Sedum takesimense Atlantis is a heart-stopping stonecrop with dramatically variegated leaves of blue green with broad, creamy yellow edges.

Sedum tetractinum 'Coral Reef' is a Chinese stonecrop with low-growing, orange-infused, succulent, evergreen leaves.

Sedum 'Banana Split' has blue-green, burgundy-infused leaves and creamy white and yellow flowers on red stems.

Sedum 'Night Light' grows into dramatic mounds topped in summer and fall with yellow flowers that age to pink.

Sedum Rock 'N Grow 'Boogie Woogie' is an exciting, variegated sport with a tidy, compact habit.

Sempervivum Butterscotch Baby is a unique bicolour selection with unusual butterscotch leaves that have bright red tips.

xSemponium are crosses of Aeonium and Sempervivum. 'Diamond' has lush green rosettes with red margins.

xSemponium are crosses of Aeonium and Sempervivum. 'Sienna' has stunning electric red rosettes.

Senecio candicans 'Angel Wings' is a "wow" plant with large, silver-white, ruffled, velvety leaves with toothed edges.

Senecio crassissimus has succulent bluish grey foliage outlined in warm violet purple.

Senecio scaposus (syn. Caputia scaposa) is a cool succulent with silver to woolly white cylindrical leaves held in a tight clump.

Senecio 'Silvery Velvet' has large, silver, fuzzy leaves with nice ribs and rippled, lobed edges for a great textural and structural effect.

Sideritis syriaca 'Sarada's Mountain Tea' or ironwort is an evergreen shrub with gray-green fuzzy foliage and yellow flowers.

Candelabras of yellow daisies atop mounds of dramatic foliage.

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

Silphium perfoliatum 'The Holy Grail' is a dramatic cup plant due to its height, chartreuse foliage and bright yellow daisies.

Sisyrinchium californicum is known as the golden-eyed grass. It has iris-like foliage and cheerful six-tepaled, star-shaped flowers.

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

Smallanthus sonchifolius, known as an earth apple, has sweet, edible storage roots and single yellow flowers.