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 Mojave Jewels 'Sapphire' is a mounding stonecrop with glaucous dusty, purplish-blue foliage and rosy-pink flowers.

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

Sedum 'Powderpuff' blooms with rosy pink flowers that completely cover the mound of foliage all the way to the ground!

Selenicereus costaricensis is the Costa Rican or red pitaya or dragon fruit with deep pink skin and magenta flesh.

Sempervivum Chick Charms 'Cherries Jubilee' is a succulent hen and chicks that forms clusters of large rosy-red rosettes.

Sempervivum Citrus Sunrise begins green and red with cream stripes in the spring turning to mostly red with cream margins.

Sempervivum Chick Charms 'Gold Rush' forms clusters of large rosettes of burgundy-reds with yellow tips shifting.

Sempervivum Chick Charms Grape Galaxy forms clusters of large rosettes of burgundy to grey-green and burgundy.

Sempervivum Chick Charms 'Lotus Blossom' is a hen and chicks succulent that forms clusters of variegated rosettes of pinks with cream edging.

Sempervivum Chick Charms 'Pineapple Paradise' forms clusters of large rosettes of outer lime-green leaves and red centres.

Sempervivum Chick Charms Strawberry Kiwi forms clusters of rich burgundy red leaves with green bases.

Sempervivum SuperSemps 'Onyx' is a hen and chicks with extra large, dark mahogany-black rosettes.

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 '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.

Sidalcea campestris, is a Prairie mallow, a hollyhock-like plant with white to pink flowers grown on strong erect stems and a butteryfly host plant.

Sidalcea hendersonii, Henderson's checker mallow, is an extremely rare native species with lovely spires pink flowers.

Sidalcea malviflora ssp. virgata is a native West Coast hollyhock relative with pink flowers on erect stems.

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.

Silene dioica 'Inane' has attractive burgundy-flushed foliage and bright magenta-pink, pinwheel-like flowers from early summer to fall.