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.

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.

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.

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

Mighty Mato grafted tomatoes produce 2-3 times (or more!) fruit than ungrafted plants and are more cold tolerant and disease resistant.

Mighty Mato grafted tomatoes produce 2-3 times (or more!) fruit than ungrafted plants and are more cold tolerant and disease resistant.

The revolutionary TomTato 'Ketchup 'n Fries' is a hand-grafted plant that produces the sweetest cherry tomatoes in the world on top and yummy, buttery potatoes underground!

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

Stephania erecta (syn. S. pierrei) is a cool novelty houseplant that grows as a small vine from a rounded caudex.

Stephania venosa (syn. S. rotundifolia) is a caudiciform houseplant producing vines of heart-shaped leaves.

Stephania venosa (syn. S. rotundifolia) is a caudiciform houseplant producing vines of heart-shaped leaves.

Stephania venosa (syn. S. rotundifolia) is a caudiciform houseplant producing vines of heart-shaped leaves.