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

Solanum tuberosum 'Banana' is a versatile gourmet fingerling potato with yellow flesh.

Solanum tuberosum 'Chieftain' is an oval to oblong tuber with red skin and white flesh that matures mid-season.

Solanum tuberosum 'Innovator' is has yellow skin and flesh that are ideal for frying.

Solanum tuberosum 'Purple Viking' is a delicious edible potato with lavender blooms, smooth purple skin, and white flesh.

Solanum tuberosum 'Red Pontiac' is a delicious edible potato with light purple blooms, thin red skin, shallow eyes, and sweet white flest.

Solidago shortii 'Solar Cascade' is a nativar of the endangered Short's goldenrod with cascading branches of long-blooming yellow flowers.

Sorghastrum nutans 'Golden Sunset' is a tall and vertical clumping yellow prairie grass with golden flower spikes.

Spirea betulifolia 'Glow Girl' is a cold-hardy, multi-stemmed shrub with white flowers and golden-green foliage.

Spirea japonica 'Double Play Gold' is a cold-hardy, multi-stemmed shrub with pink flowers and golden-green foliage.

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.

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

Strumaria picta is a beautiful candy-cane-coloured species with red and white bell-shaped flowers with a spicy fragrance.

Strumaria salteri is a cute and dainty species with glistening mid pink flowers with darker central bands that bloom in fall.

S. truncata White Form has beautiful outward-facing or nodding clusters of white, fragrant, funnel-shaped flowers.

Styrax obassia, the fragrant snowbell, is a lesser-known relative of the Japanese snowbell, Styrax japonicus.

Succisa pratensis, known as blue buttons or devil's-bit scabious, is a perennial wildflower with globular, purple pincushions.

Syringa meyeri Flowerfesta White is a reblooming, dwarf lilac producing larger-than-average white, very fragrant, dense panicles.

Syringa meyeri 'Pearl Potion' is a cold-hardy, compact lilac with pink buds and pure white fragrant flowers.

Syringa vulgaris 'Congo' has warm purple buds opening to lavender flowers.