Sempervivum SuperSemps 'Ruby' is a hen and chicks with giant, 8 inch wide, dark maroon rosettes.

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 cephalophorus 'Orange Flame' is an floriferous succulent with eye-catching bright orange flowers.

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

Senecio mandraliscae is a spreading succulent with long blue gray pencil-like fleshy leaves and small white flowers.

Senecio peregrinus or String-of-Dolphins is grown for its foliage that resembles a pod of jumping dolphins. White flowers in spring,

Senecio rowleyanus or string-of-pearls is a trailing succulent with spherical, succulent leaves resembling a pearl necklace.

Senecio rowleyanus 'Variegata' is the variegated string of pearls or "VSOP". It is a very rare variegated form with leaves variably marked with white and ivory.

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

Senecio serpens is a spreading succulent with long, blue gray, pencil-like, fleshy leaves and small white flowers.

Senecio stapeliiformis is a beautifully-patterned succulent with pencil-wide, upright, blue-green stems with silver markings.

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

Moon carrot (Seseli gummiferum) has highly dissected, fern-like, powder blue foliage large umbels of white and pink.

Lush and tropical purple foliage hardy to zone 7!

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

Silene acaulis, moss campion, is a small, mountain-dwelling wildflower with pink flowers on mossy carpets.

Sinningia is a genus related to Gloxinia and African violets. 'Invasion Force' has pink, fragrant, tubular flowers atop felted foliage.

Sinocrassula yunnanensis (syn. Crassula) has tiny, pointed, black leaves covered in tiny silver hairs.

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